JP2003188962A - Foldable cellular telephone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable cellular telephone which detects and warn of an external pressures in advance to prevent a break by pressures. <P>SOLUTION: The foldable cellular telephone is comprised of an open and shut switch which detects whether the foldable cellular telephone is open or not, an external pressure detection switches which detect different levels of external pressures, and an external pressure detection part which recognizes external pressure levels detected by external detection switches, and issues proper alerts depending on dangerous levels. And it is composed so that a screen which protects a display can press a handling part with more than a given pressure. Any risk of break can be detected and can be prevented by warning. Also a power-off device is set between a power source and a display. When a risk of break arises, signal sending and energization to the display are cut off, and failure of the body occurred by a damage on the display can be prevented. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable mobile phone, and more particularly to a foldable mobile phone capable of preventing breakdown or damage due to external pressure.

[0002]

2. Description of the Related Art A foldable mobile phone is mainly composed of a first housing, a second housing, and a hinge portion that allows the first housing and the second housing to be folded. In the first case,
A receiver for transmitting the other party's voice signal to the user, an antenna section used for transmitting and receiving radio signals, a display section for displaying the status and information of the telephone, and a second case for the user's voice signal. It is provided with a transmitter for transmitting information to the other party, a power supply for supplying electricity to the entire telephone, and an operating portion for making and receiving telephone calls and operating various functions.

As a recent trend, mobile phones have become popular for mail service and various information services, and games can be realized on the mobile phones. An increasing number of mobile phones have a display portion larger than that of a telephone.

In particular, the foldable mobile phone is compact when closed and has a relatively large area when opened, so that it is possible to mount a larger display unit and the display unit becomes larger. There is a tendency.

[0005]

The display portion of such a foldable mobile phone is realized by a liquid crystal panel or the like. Generally, the material of the liquid crystal panel is glass, and the foldable mobile phone is made smaller and lighter. Because it is made very thin. For this reason, even among the components constituting the foldable mobile phone, there is a problem that there is a large risk of breakdown or destruction due to external pressure, and that the display unit becomes larger and is more susceptible to external pressure.

When excessive external pressure is applied to the foldable mobile phone due to mishandling by the user, the display unit is broken or destroyed, and even the foldable mobile phone body is broken or destroyed. There is a possibility that it will end up.

In order to solve such a problem, for example, as disclosed in Japanese Unexamined Patent Publication No. 2001-54155, a foldable portable telephone device having a touch panel on one side and a key switch on the other side, which is folded in two. In the above, with an elastic protrusion and a recess that narrow the gap between the touch panel surface and the key switch surface of the folded mobile phone device when external pressure is applied, the open / closed detection switch detects that the mobile phone device is in the folded closed state. , When the contact between the touch panel and the predictive protrusion is detected, the external pressure destruction detection determination unit determines that it is dangerous and sounds a warning sound. ing.

The method disclosed in this prior document is an effective means for a foldable mobile phone device having a touch panel, but such a method is used in the case of a foldable mobile phone having no touch panel. I couldn't.

For this reason, a general foldable mobile phone having no touch panel has a drawback in that it cannot detect external pressure, and if excessive external pressure is applied, it may be damaged or destroyed.

Further, as a condition for detecting the external pressure applied to the foldable mobile phone, it is adjusted by the hardness of the rubber, the size of the projection, and the size of the prediction projection. There is also a problem that the external pressure that can be detected is only one stage.

The main object of the present invention is, in a foldable mobile phone, to detect the external pressure when it is applied and inform the user of the external pressure. Furthermore, the state of the applied pressure is determined according to the degree of the external pressure. An object of the present invention is to provide a foldable mobile phone configured to notify a user.

[0012]

According to the present invention, in order to solve the above problems, an open / close switch for detecting opening / closing of a foldable mobile phone, a plurality of external pressure detection switches having different external pressure detection levels, and an external pressure detection switch detection. The foldable mobile phone is configured with an external pressure detection unit that recognizes the detected external pressure level and issues a warning according to the level determined to be dangerous.

Further, in the folded state, when a predetermined pressure or more is applied, the screen for protecting the display unit presses the operation unit. As a result, it can be sensed that the danger of destruction has occurred, and a warning can be issued to give advance notice of the destruction and prevent it. In addition, a power cutoff device is installed between the power supply and the display unit to shut off the power supply to the display unit and the transmission of signals when there is a risk of destruction, resulting in damage to the display unit and damage to the main unit. It was decided to prevent.

[0014]

FIG. 1 shows an embodiment of a foldable mobile phone according to the present invention. The foldable mobile phone 2 includes a first housing 4 and a second housing 6, and
The second housing 6 and the second housing 6 are flexibly connected by a hinge 11 as shown in FIG.

The first housing 4 has a display section 8 formed of a liquid crystal display device, and a screen 1 for protecting the display section 8 in a protruding shape.
0, the earpiece 12, the elastic rubber 13, the actuating portion 15 of the open / close detection switch 5, the antenna 24 used for transmitting and receiving radio signals, and the state of light when receiving a call, talking, charging, etc. The second housing 6 is provided with a light emitting portion 34 and the like, and the second housing 6 is provided with an operating portion 14 such as a push button, a transmitter portion 16, an external pressure detecting switch 3 as a pressure sensitive switch, an open / close detecting switch 5, and a mobile phone. Power supply unit 52 that supplies electricity to the entire telephone
(Illustrated in FIG. 2) and the like are provided. The external pressure detection switch 3 and the elastic rubber 13, and the open / close detection switch 5 and the operating unit 15 are provided so as to face each other when the foldable mobile phone 2 is folded.

The open / close detection switch 5 is a proximity switch, and the open / close detection switch 5 is turned on when the foldable mobile phone 2 is folded and the operating portion 15 approaches within a predetermined distance. The control unit 32 moves from the open / close detection switch 5 to the operation unit 1
5 receives a close signal, the foldable mobile phone 2
Detects that the is closed. The open / close detection switch 5
The operating unit 15 may replace the installation locations of the first housing 4 and the second housing 6.

The external pressure detection switch 3 is pressed by a predetermined pressure or more so that the switch is turned on. When the foldable mobile phone 2 is simply folded, the external pressure detection switch 3 and the elastic rubber 13 only contact each other. Yes, the external pressure detection switch 3 is not pressed. Therefore, in this state, the switch of the external pressure detection switch 3 is not turned on, the gap between the first housing 4 and the second housing 6 is kept constant, and both the screen 10 and the operation unit 14 are not brought into contact with each other. Further, the elastic rubber 13 prevents the external pressure detection switch 3 from being in direct contact with the first housing 4 and being scratched.

The screen 10 is transparent and is formed in a protruding shape, and the protruding height does not contact the normal operation portion 14 when the folding mobile phone 2 is simply closed, and the display portion 8 is broken or destroyed. The operation portion 14 is formed so as to be pressed when it is deformed by being applied with a pressure slightly weaker than the applied external pressure.

Next, the switch will be described. In the simple folded state, the open / close detection switch 5 and the actuating portion 15 are activated to detect the folded state. And
When an external pressure of a predetermined amount or more is applied in the closing direction of the foldable mobile phone 2, the gap between the first housing 4 and the second housing 6 is narrowed as shown in FIG. 5, and the elastic rubber 13 causes the external pressure detection switch. 3, the external pressure detection switch 3 is turned on. On the other hand, in such a state, the screen 10 in the first housing 4 and the operation unit 14 in the second housing 6 are not yet in contact with each other.

When a stronger external pressure is applied to the foldable mobile phone 2, since the external pressure detection switch 3 has already been pushed down in the state of FIG. 5, the hinge 11 is used as one fulcrum and the elastic rubber 13 and the external pressure detection switch are used. The first housing 4 and the second housing 6 are physically distorted as shown in FIG. 6 with the contact portion of 3 as the other fulcrum. When transformed into the state shown in FIG. 6, the display unit 8 mounted on the first housing 4 has a higher risk of failure or destruction. When such a strong external pressure is applied, the screen 10 that protects the display unit 8 is deformed, and one of the push buttons of the operation unit 14 is pressed by the central portion of the screen 10 having a protruding shape. In FIG. 6, only the first housing 4 is shown in a distorted state in order to emphasize the features.

FIG. 7 shows the structure of the foldable mobile phone 2. As shown in FIG. 7, the foldable mobile phone 2 mainly includes a wireless unit 22 and a control unit 32, and data is transmitted and received between the wireless unit 22 and the control unit 32.
An antenna 24 used for transmitting and receiving radio signals is connected to the radio unit 22.

In the control unit 32, the transmitter 16 for transmitting the user's voice signal to the other party, the receiver 12 for transmitting the other party's voice signal to the user, the receiver 12 for the incoming call, the telephone call, and the charging described in FIG. A light emitting unit 34 that informs the user of a state such as time by light, a display unit 8 that displays various information, an operation unit 14 that makes and receives a call and operates various functions, and detects the open / closed state of the foldable mobile phone 2. In addition to the open / close detection switch 5, the external pressure detection switch 3 that operates when an external pressure is applied, a speaker 36 that informs the user of music and a warning sound, a vibrator 26 that informs the user of the state of the telephone by vibration, and a telephone The storage device 42 that stores the state, data, and the like, the clock unit 44 that measures time, and the like are connected, and data is transmitted, received, or transmitted and received to and from the control unit 32.
Further, an external pressure detector 46 for detecting the external pressure, recognizing the detection level and the like to judge the operation is provided in the controller 32.

The control unit 32 recognizes that the foldable portable telephone 2 is closed when the operating unit 15 approaches and the open / close detection switch 5 is turned on. When the switch of the external pressure detection switch 3 is pressed, the foldable mobile phone 2
It is determined that the pressure above the predetermined level is applied, and the speaker 36
To activate the alarm (level 1). Further, when the control unit 32 senses that any one of the push buttons of the operation unit 14 is pressed by the screen 10 in the state where the foldable mobile phone 2 is closed, it determines that there is a risk of breakdown or destruction, and the speaker 36 is detected. Warning of destruction risk (level 2)
Generate. Further, when an alarm is issued, the type of the alarm and the time when the alarm is issued are stored in the storage unit 42.

The power supply unit 52 is a secondary battery or the like, and the wireless unit 2
2 and the control unit 32, and is a foldable mobile phone 2
Supply power to each part of.

The configuration of the foldable mobile phone 2 has been described above, but the configuration of the portion of the foldable mobile phone 2 shown in FIGS. 1 and 7 necessary for communication, such as the wireless section, is well known to those skilled in the art. Since it is not directly related to the present invention, its explanation is omitted.

Next, the operation of the foldable mobile phone 2 when an external pressure is applied will be described with reference to the flowchart of FIG.

FIG. 3 is a side view of the foldable mobile phone 2 when closed, FIG. 4 is a front view of the foldable mobile phone 2 when closed, and FIG. 5 is a state in which external pressure is applied. It is a figure which shows the folding type mobile phone 2 of FIG.

As shown in FIG. 3, the foldable portable telephone 2
When is folded around the hinge portion 11, the first housing 4 and the second housing 6 face each other, and the opening / closing detection switch 5 provided in the second housing 6 senses the proximity of the operating portion 15, The control unit 32 detects that the foldable mobile phone 2 is closed (F-1). At this time, the external pressure detection switch 3 is simply in contact with the elastic rubber 13. Next, it is confirmed whether or not the external pressure detection switch 3 has been pressed (F-2), and if it has not been pressed, step F
It shifts to -12, and it is confirmed whether the opening / closing detection switch 5 is opened (F-12).

If the open / close detection switch 5 is not opened, the process returns to step F-2 again, and the external pressure detection switch 3
Returning to the confirmation of pressing, the process ends when the open / close detection switch 5 is opened.

When the external pressure detection switch 3 is pressed in the confirmation of the external pressure detection switch 3 being pressed in step F-2, the external pressure detection unit 46 is notified (F-3). The external pressure detection unit 46 recognizes that the external pressure is at the dangerous level 1 due to the pressing of the external pressure detection switch 3, and the storage device 42 stores the detected level and time at this time. The time information is obtained from the clock unit 44, and the stored information is read out later and used for failure diagnosis or the like. At the same time, a level 1 warning process is performed (F-4), and the speaker 36 is used to warn the user that external pressure is applied. FIG. 5 shows the foldable mobile phone 2 at this time.

Next, it is confirmed whether or not the operation unit 14 is pressed (F-5). If the operation unit 14 is not pressed, the process proceeds to step F-10, and the external pressure detection switch 3
It is confirmed whether or not is opened (F-10). When the external pressure detection switch 3 is not opened, the process returns to the level 1 warning in step F-4. On the other hand, step F-1
When the open / close detection switch 3 is open at 0, the level 1 warning is stopped at step F-11, and it is detected at step F-12 whether the open / close detection switch 5 is open. After shifting to the open detection of the open / close detection switch 5 in step F-12, the same processing as described above is performed.

In the confirmation of the depression of the operation unit 14 in step F-5, if the operation unit 14 is depressed by the screen 10, the external pressure detection unit 46 is notified (F-6). The external pressure detection unit 46 recognizes that the external pressure is at the dangerous level 2 due to the operation unit 14 being pressed, and the storage device 44 stores the detected level and time.
The foldable mobile phone 2 at this time is shown in FIG. The storage device 44 can store a plurality of appropriately detected levels and times. After that, a level 2 warning process is performed (F-7), and the speaker 36 indicates that external pressure is being applied.
Also, the vibrator 26 is used to warn the user.

Then, in step F-8, it is confirmed whether or not the operating portion 14 is opened. If the operating portion 14 is not opened, the warning of level 2 in step F-7 is returned to, and the level is returned. Continue warning 2 above. On the other hand, when the operation unit 14 is opened, the level 2 warning is stopped (F-
9) The procedure shifts to confirmation (F-10) whether the external pressure detection switch 3 is open. After shifting to the opening confirmation of the external pressure detection switch 3 in step F-10, the same processing as described above is performed.

In the above example, it is described that the level 1 warning of the step is given by the speaker 36, and the level 2 warning is given to the user by using the speaker 36 and the vibrator 26. May be used by changing the color and blinking of the light emitting unit 34, the sound and volume emitted from the speaker 36, the vibration and interval of the vibrator 26, and the like, or a combination thereof. . Further, the positions of the elastic rubber 13 in the first housing 4 and the external pressure detection switch 3 in the second housing 6, or the positions of the actuating portion 15 and the open / close detection switch 5 may be replaced.

Therefore, the foldable mobile phone 2 is added to the foldable mobile phone 2 by utilizing the open / closed detection of the open / closed detection switch 5, the pressure detection of the external pressure detection switch 3, and the pressing of the operating portion 14 by the screen 10. It becomes possible to detect the external pressure state in stages,
It is possible to give a warning before the display unit 8 or the like breaks down or is destroyed depending on the level of the danger level. Further, since it has a function of storing the magnitude of the external pressure applied to the foldable mobile phone 2 and the time at which the pressure is applied, it can be used later for failure diagnosis or the like. Furthermore, since the foldable mobile phone 2 operates only in the closed state, it is possible to operate normally when the foldable mobile phone 2 is opened.

Next, another embodiment of the folding mobile phone according to the present invention will be described.

FIG. 9 shows a foldable portable telephone 7 as another embodiment of the present invention. Foldable mobile phone 7
Differs from the foldable mobile phone 2 described above in that the elastic rubber 13 is replaced by the second external pressure detection switch 19. The second external pressure detection switch 19 reacts when the operating pressure of the switch is larger than that of the external pressure detection switch 3 and the strength of the external pressure further increases after the external pressure detection switch 3 is activated. The other parts in FIG. 9 are the same as those in FIG.

Therefore, in the foldable mobile phone 7, the external pressure detection switch 3 is first activated to detect the pressing,
After that, when the strength of the external pressure further increases, the second external pressure detection switch 19 operates, so that two different pressures are sensed and a warning is generated for each of them, so that fine pressure sensing and warning can be performed.

FIG. 10 is a schematic diagram showing the structure of a foldable mobile phone 9 according to another embodiment. The external shape is almost the same as that of the foldable mobile phone 7 shown in FIG.
A comparison between the foldable mobile phone 9 and the foldable mobile phone 2 is different in that a second external pressure detection switch 19 and a signal cutoff switch 17 are added. The second external pressure detection switch 19 reacts when the operating pressure of the switch is larger than that of the external pressure detection switch 3 and the external pressure further increases after the external pressure detection switch 3 is activated. The signal cutoff switch 17 is provided between the control unit 32 and the display unit 8 and is activated when pressure is applied immediately before the foldable mobile phone 9 is broken or destroyed. The power supply, signal lines, etc. between 8 are cut off. Other configurations and the like are the same as those of the foldable mobile phone 2, and the description thereof will be omitted.

Next, the operation of the foldable mobile phone 9 will be described with reference to the flowchart of FIG. still,
The description of the same parts as those in the above example will be partially omitted.

First, when the foldable mobile phone 9 is closed, the open / close detection switch 5 detects that it is closed (G-1). Next, it is confirmed whether or not the external pressure detection switch 3 is pressed (G-2), and if not pressed, the process proceeds to step G-8 to confirm the open detection of the open / close detection switch 5. If the open / close detection switch 5 is not opened, the process returns to the confirmation of the pressing of the external pressure detection switch 3 in step G-2, and if the open / close detection switch 5 is opened, this process ends.

Here, the foldable mobile phone 9 has a second
Since the external pressure detection switch 19 is provided, in addition to the level 1 warning by the external pressure detection switch 3, the second external pressure detection switch 1 operates at a pressure higher than the pressure of the external pressure detection switch 3.
9 is activated and gives a level 2 warning. The warning of level 1 and the warning of level 2 are given from step G-4 to step G-13, and the warning, cancellation, etc. are the same operations as described above. Further, the foldable mobile phone 9 is provided with a signal cutoff switch 17 and is activated when the external pressure becomes higher with the level 2 warning issued.

Next, the operation of the signal cutoff switch 17 will be described.

After the level 2 warning is given in step G-10, it is confirmed whether the pressure applied to the foldable mobile phone 9 is further increased and the operation unit 14 is pushed (G).
-11). If the operation unit 14 has not been pressed, the process returns to step G-12, it is confirmed whether the operation of the second external pressure detection switch 19 is opened, and the level 2 warning is stopped or continued.

On the other hand, when it is confirmed in step G-11 that the operation portion 14 has been pressed, the external pressure detection portion 46 is notified of that fact. When the external pressure detection unit 46 receives the notification that the operation unit 14 has been pressed, the external pressure detection unit 46 determines that there is a risk that the display unit 8 and the like will be destroyed, and the control unit 32 operates the signal interruption switch 17 (G-15 ), Connecting and disconnecting the power supply and the signal between the control unit 32 and the display unit 8. Further, the detected level and time at this time are stored in the storage device 42.

When the signal cutoff switch 17 is activated,
A level 3 warning is given (G-16). The level 3 warning uses the speaker 36, the vibrator 26, and the light emitting unit 34 to warn the user that external pressure is being applied.

When the level 3 is reached, the signal cut-off switch 17 is actuated at a high risk of failure or destruction of the display unit 8. If a strong external pressure is applied thereafter and destruction is caused, it is expected. It is conceivable that even the main body of the foldable mobile phone 9 may be destroyed by an electric signal that cannot be obtained,
In order to avoid this, the power supply and the signal connecting the control unit 32 and the display unit 8 are basically electrically disconnected.

The warning of level 3 is confirmed until the operating section 14 is opened (G-17), and is continued until the operating section 14 is opened. When the operation unit 14 is opened, the level 3 warning is stopped (G-18), and the operation of the signal interruption switch 17 is stopped (G-19). When the operation of the signal cutoff switch 17 is stopped, the control unit 32 and the display unit 8
Reconnect the power and signals that were electrically disconnected during.

After that, the process returns to step G-12 to shift to confirmation of opening of the second external pressure detection switch 19. Step G
After shifting to the opening confirmation of the second external pressure detection switch 19 at -12, the same processing as described above is performed.

As described above, the foldable mobile phone 9
Is an opening / closing detection switch 5, an external pressure detection switch 3, a second external pressure detection switch 19, and an operation unit 14 including a screen 10.
By pressing the button or the like, it becomes possible to detect the external pressure applied to the foldable mobile phone 9 step by step, and depending on the degree of the danger level before the display section 8 is broken or destroyed. It is possible to issue a warning according to each stage.

Further, when an external pressure that is slightly weaker than that of the display unit 8 is detected, the signal and power supply to the display unit 8 are cut off. When it arrives, it is possible to prevent even the main body of the foldable mobile phone 9 from being destroyed by an unexpected electric signal.

In the above example, the warning of level 1 is the speaker 36, the warning of level 2 is the speaker 36 and the vibrator 26, and the warning of level 3 is the speaker 36 and the vibrator 2.
6 and the use of the light emitting unit 34 to give a warning to the user, the color and blinking of the light emitting unit 34, the sound emitted from the speaker 36, and the like so that the user can be notified of the level of the risk. The volume, the vibration of the vibrator 26, the interval, and the like can be changed and used, or they can be used in combination. The positions of the external pressure detection switch 19 in the first housing 4 and the external pressure detection switch 3 in the second housing 6 may be replaced.

[0053]

According to the foldable mobile phone of the present invention, by utilizing the open / close detection switch, the external pressure detection switch, and the pressing of the operating portion by the screen, the foldable mobile phone can be operated in the closed state. The target pressure can be detected according to the magnitude of the external pressure.

When the screen for protecting the display portion is formed in a protruding shape, and when a large external pressure is applied, it is possible to detect that the housing is distorted by pressing the corresponding key switch, and before the display portion fails or is destroyed. Can detect the danger.

The external pressure detected stepwise can be warned by different warning methods, and the user can recognize the pressure level applied to the foldable mobile phone.

Since the external pressure detection level can be stored and the detected level and the detected time can be stored, it can be used for failure diagnosis.

Since the foldable mobile phone operates only in the closed state, it is possible to operate normally when the foldable mobile phone is opened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a foldable mobile phone according to the present invention.

FIG. 2 is a diagram showing a foldable mobile phone according to the present invention.

FIG. 3 is a diagram showing a foldable mobile phone according to the present invention.

FIG. 4 is a diagram showing a foldable mobile phone according to the present invention.

FIG. 5 is a diagram showing a foldable mobile phone according to the present invention.

FIG. 6 is a diagram showing a foldable mobile phone according to the present invention.

FIG. 7 is a diagram showing a configuration of a foldable mobile phone according to the present invention.

FIG. 8 is a flowchart showing an operation of the folding mobile phone according to the present invention.

FIG. 9 is a perspective view showing another example of the foldable mobile phone.

FIG. 10 is a diagram showing a configuration of another example of a foldable mobile phone.

FIG. 11 is a flowchart showing an operation of a foldable mobile phone according to another example.

[Explanation of symbols]

2, 7, 9 Foldable mobile phone 3 External pressure detection switch 4 First case 5 Open / close detection switch 6 Second housing 8 Display 10 screens 11 Hinge part 12 Earpiece 13 Elastic rubber 14 Operation part 16 transmitter 17 Signal disconnect switch 19 Second external pressure detection switch 22 Radio 24 antenna 26 vibrator 32 control unit 34 Light emitting part 36 speakers 42 storage device 44 Clock Department 46 External pressure detector 52 power supply

Claims (8)

[Claims] 1. A foldable mobile phone, comprising: a foldable mobile phone, comprising a pressure-sensitive switch on the open / close end side of the foldable mobile phone for sensing pressure applied to the open / closed end. 2. A foldable mobile phone, wherein a first housing having a display screen and a second housing having a push button are flexibly connected at a connecting portion, and the protection screen of the display screen is projected. The foldable mobile phone according to claim 1, wherein the foldable mobile phone is formed in the same manner, and the protective screen is configured to press the push button with a pressure equal to or higher than an operating pressure of the pressure sensitive switch. 3. The foldable mobile phone according to claim 1, wherein the pressure sensitive switch is a pressure sensitive switch that senses a plurality of different pressures. 4. A warning means for issuing a warning when the pressing of the pressing button by the pressure sensitive switch or the protective screen is sensed.
The foldable mobile phone according to any one of 3 above. 5. The storage device according to claim 1, further comprising a storage unit that stores the pressure when the pressure switch or the protection screen presses the pressure button. Foldable mobile phone. 6. A storage unit for storing the pressure value and the pressure application time when the pressure switch or the protection screen presses the push button. The foldable mobile phone according to claim 1. 7. The shutoff means for shutting off the power source of the foldable mobile phone when the push of the push button by the protective screen is sensed, according to any one of claims 2 to 6. Foldable mobile phone. 8. The foldable mobile phone according to claim 1, wherein the operation is performed only when the foldable mobile phone is closed.