Lenovo S920 return key is not sensitive What to do

Dear Lenovo users, hello!

We do not recommend rooting yourself, on the one hand, it will cause instability to the system, and on the other hand, it will affect the warranty. The pre-installed software of Lenovo is well-designed software after user feedback, which will be helpful to public life.

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Dear Lenovo users, hello!

For the problem of the failure of the touch button at the bottom of your phone screen, we recommend that you try to solve it by simply troubleshooting the following situations and methods:

a. Intermittent occurrence: It may be that the current device is running insufficient resources or the system file is abnormal, resulting in the inability to respond to the operation in time. Here it is recommended that you optimize the system, and close the background system programs regularly, if it cannot be improved, please back up the body data and try to restore the factory settings;

b. High frequency appears or has been completely unresponsive: the touch button under the screen belongs to the touch screen part, such as high frequency or has completely failed, it is more likely to be caused by the abnormal underlying drive of the system or the failure of the touch screen itself, here it is recommended that you send the repair site in time to ensure the normal use of the follow-up.

Lenovo authorized repair site inquiry.

The business hours of the maintenance site are usually from 9:00 to 18:00 from Monday to Sunday, except for holidays, and the stations will be slightly adjusted according to their own operations.

If the home button of the Lenovo K920 mobile phone screen is out of order, you can easily troubleshoot it through the following situations and methods:

1. Intermittent occurrence: It may be that the current equipment running resources are insufficient or the system files are abnormal, resulting in the inability to respond to the operation in time, the system can be optimized, and the background system program can be closed regularly, if it cannot be improved, the body data can be backed up to upgrade the mobile phone system to the latest observation and use. If it is already up-to-date, it is recommended to back up your personal information for factory reset, and observe the attempt (ps:

Remember to back up your data before operation to avoid loss of personal data);

2. High frequency appears or has been completely unresponsive: the touch button at the bottom of the screen belongs to the touch screen part, if the high frequency or has completely failed, it is more likely to be caused by the abnormal underlying drive of the system or the failure of the touch screen itself, which can be sent to the repair site for detection.

Dear Lenovo users, hello!

Dear Lenovo users, hello!

Hello, sorry.

If your device is running low and slow to respond, you can try to adjust and improve it in the following ways:

1. Frequently or regularly use the mobile phone acceleration function of security software such as Le'an to clean up background applications, which can effectively release the running memory;

2. It is recommended to uninstall useless or infrequently used software, which can prevent the self-start of such software and occupy running memory;

3. After the application is finished, try to use the exit function of the application to completely exit to avoid the application hanging in the background and occupying the running memory;

4. It is recommended to use the built-in music security software for self-start management, limit the boot start project, avoid occupying too much running memory, due to the difference in the version of the music security, there may be differences in the menu path, take the version as an example, the path and operation steps are as follows: "music security" - "mobile phone acceleration" - "self-start management", the self-start project that needs to be restricted is manually closed, please refer to it.

You can visit the official website for inquiries:

You are welcome to contact us at any time or visit Lenovo Lewen (for consultation.

Hello. We apologize for the inconvenience.

1. It is recommended that you turn off the phone again and restart the phone after using the comparison;

2. Back up your mobile phone information and restore the factory settings;

If the above operation is invalid, please go to the maintenance site authorized by Lenovo for corresponding inspection and maintenance in time.

Lenovo authorized repair site inquiry.

If you have other questions in the follow-up use process, you are welcome to contact us at any time or visit Lenovo Lewen (

Consult to find out.

Nowadays, the functions of mobile phones are getting more and more powerful, but the quality is not very good.

It is all caused by the low performance of the product.