What should I do if the middle button of Lenovo S850 mobile phone can t be used?

Hello. We apologize for any inconvenience caused.

If the problem persists after restarting the phone, we recommend that you perform the following simple troubleshooting attempts to solve the problem:

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 buttons at the bottom of the screen belong to the touch screen part, such as high frequency or has completely failed, it is more likely to be caused by the abnormal underlying driver 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 after-sales site inquiry.

You are welcome to contact us or visit Lenovo at any time

Consult to find out.

Hello. We apologize for any inconvenience caused.

In view of the failure of the back button at the bottom of your mobile phone screen, it is recommended that you try to solve it by simple troubleshooting and methods in the following situations:

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 call for wide response operations 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 return button at the bottom of 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 driver 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 after-sales site inquiry.

You are welcome to contact us or visit Lenovo at any time

Consult to find out.

Dear Lenovo users, hello!

If the above solutions do not solve your problem, you are welcome to use the official WeChat of Lenovo service ** consultation, click on friends on the mobile phone WeChat, add friends, search number, enter "Lenovo service", add Lenovo service official WeChat, you can consult anytime and anywhere, service time 9:00-21:00.

Lenovo Community.

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

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 driver of the system or the failure of the touch screen itself.

It may be that your mobile phone system has leaked and shouted back to the wilderness My previous mobile phone also encountered this kind of problem Then I use the application treasure to flash the machine It's very simple Install the application treasure on the computer Connect the phone to the computer Open the application treasure Match your model and choose the ROM that suits your mobile phone** Back up the phone Start flashing the phone After success, the phone restarts Your problem should be solved I hope mine can be your wheel hole.

Hello, sorry for the inconvenience.

For the problem of the failure of the touch buttons at the bottom of your mobile phone screen, it may be improved directly through the ** software, and it is recommended that you try to solve it through 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 rough operation in time. Here it is recommended that you optimize the system, and regularly close the background system programs, if you can't change Wu Yan Zhenshan, please back up the body data to try to restore 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.

You are welcome to contact us or visit Lenovo at any time

Consult to find out.