This button is broken, which may be caused by the screen problem of your mobile phone.

If not, you can choose to try double cleaning or brushing. You can also restart your phone.

If none of the above methods can solve the problem, then you need to go to after-sales service for maintenance. Solutions to other problems of Xiaomi mobile phone: 1. Want to get into recovery quickly? In the system update, click the menu key and select Restart to Restore, Restart to Restore.

2. Want to quickly kill unnecessary program processes? Press and hold the Home key to enter the program management, and click the "one-click cleaning" button at the lower left to clean up the redundant processes in the memory and inform the released memory and the currently available memory. Note: In order to ensure the normal operation of the system, the system process will not be cleared. 3. IP dialing will not be set? MIUI ROM can automatically add an IP prefix to the remote calling number according to your operator. You can set >; Set smart IP dialing settings accordingly.

You can also press and hold the contact you want to dial before dialing, and select "Call IP Phone" in the pop-up menu. 4. If the phone comes, it is not convenient to answer it? Slide up the answering panel to refuse to answer the phone and send a short message to inform the other party quickly. If flip mute is set, you can flip the phone directly and mute it quickly. If you want to mute quickly, you can also mute quickly. These designs can help you face awkward moments easily.

5. How to set custom * * *? Click to set personal label on the desktop, input sound and vibration, select incoming call or notification, and then select from other programs at the bottom of the screen, or you can choose our online * * * Oh, we have prepared many exquisite * * * resources for rice noodles. 6. Afraid of forgetting the text message? You can press and hold a short message and select "Favorite Short Messages" in the pop-up menu; You can switch to the Favorites tab of the SMS main interface to view favorite messages.

7. How to start 720P video recording? Start the camera, click the menu key to switch to the camera mode, click the menu key to select settings again, and select "720P" in the pop-up video quality menu. 8. How to delete an entry quickly? The system global list supports sliding deletion. You can try to swipe left or right, select the item you want to delete, and then click the Delete button.

9. How can I share my network with a PC or other terminal? Go to Settings > System > Share Mobile Network, and you can choose to share the Internet connection through USB binding or set your mobile phone as a Wi-Fi hotspot. 10. How to change the style of desktop gadgets? Click the menu button on the desktop to select the editing mode. Is there an edit button in the upper right corner of MIUI widget? Click it, and we can see the local component style. If not, look at the online component style. Don't worry, there is always one you like.

2. What if the Xiaomi menu button doesn't work?

Long press the menu key. After Xiaomi 3 mobile phone updates the system, the menu key fails, which may be caused by problems during the upgrade process.

1. Users can try to solve the problem by swiping their mobile phones. First, enter miui official website to download the adapted credit card package and import it into the root directory of the mobile phone memory for later use.

2. Then enter the swipe mode, which is to restore the interface. Turn it off first, and press the volume and power keys until the recovery interface appears.

3, double wipe before brushing, in fact, is to empty the data, cache, and return to the appearance mode.

4. Select item 5 to install zip from sdcard.

5. Select the first choose zip from sdcard and confirm to find the downloaded brush package, that is, the zip file.

6. The mobile phone will automatically execute the brushing program, and the mobile phone will automatically enter the system after the brushing is completed.

7. If it is a system fault, it can be eliminated after the machine is brushed.

3. My Xiaomi mobile phone menu button and back button touch did not respond. What should I do?

There are several solutions to the non-response of touch screen buttons:

1. If the screen touches abnormally when the mobile phone is charging or connected to the power supply, for example, when it is connected to a computer through a USB cable, then we need to see if it is caused by unstable voltage, or if the data cable and charger used are not originally adapted.

2. Click System Tools → System Update → Update System on the home page of the mobile phone, and try to upgrade the mobile phone system to the latest version. Sometimes, due to the old version of the mobile phone system, the touch screen of Xiaomi mobile phone will not respond.

3. When using fast charge, it should be noted that Xiaomi mobile phone supports two standard fast charges: one is to support 5V 2A charging (1 hour charging 40%, full within 3 hours); The other is to support 9V 1.2A charger (standard power adapter, charging efficiency is improved 15%, 1 hour charges 60%, and it is fully charged within 2.5 hours).

4. Enter * # * # 6484 # * * in the dialing interface to enter the hardware detection mode, slide down in the hardware detection interface to find the touch screen test, and click Enter.

5. Press and hold the leftmost virtual keys (three horizontal keys) in the touch screen test interface, and select touch calibration in the menu that appears. On the next page, there will be an option to start calibration. After clicking OK, don't touch the screen until the prompt of calibration success appears.

Matters needing attention for Xiaomi mobile phone to prevent the failure of touch screen buttons:

6. Avoid static electricity. Static electricity can easily break through the capacitive screen. Although the glass on the surface of the mobile phone screen has undergone certain anti-static treatment, it does not mean that it can withstand the static electricity of the human body. Many rice noodle friends are used to sticking some decorations or inferior screen films that are easy to generate static electricity on the surface of mobile phones, resulting in screen failure. Therefore, I hope that the mobile phone can be equipped with a shell or holster if possible.

7. Avoid squeezing the screen and bumping the phone. Nowadays, most smartphones are big screens, and Xiaomi phones are no exception. The whole front is a big screen, and this screen is the protective cover of the mobile phone. If it is damaged, there will naturally be various problems, from failure to direct scrapping. Moreover, nowadays people usually put their mobile phones in their pockets, which is easy to cause squeezing. For example, people who like to play mobile phones at night sometimes wake up the next day and find that their mobile phones are actually under them.

8. Stay away from high temperatures. Mobile phones are very afraid of high temperature, especially Android smartphones. Of course, Xiaomi is a high-profile mobile phone, born for fever, with a certain degree of heat, and other high temperatures are even worse. The high temperature mentioned here is not "fire roasting", but the ambient temperature. It is recommended not to reach 40 degrees, because the screen of the mobile phone will definitely fail and get stuck if it is heated for a long time.

4. The buttons under my Xiaomi mobile phone are out of order.

It may be that the touch module is damaged, so it can be replaced by Xiaomi mobile phone "floating ball".

1. Open the drop-down menu of mobile phone and click the settings icon.

2. Open it and click "More Settings".

3. Click on "Suspended Ball".

4. Turn on the float switch and click "Custom Menu".

5. Click on it, and the Enter key has been set. You can also set other function keys and click Enter.

6. See that you can set back key and task key. After setting, you can use the floating ball instead of the function keys of the mobile phone.

5. Xiaomi 3 menu button is broken

Hi!

The problem of your mobile phone must be tested by the maintenance personnel before it can be confirmed for you. Please refer to the following two points:

Answer: Please go to Xiaomi's authorized repair point or Xiaomi's home near you for testing.

Address and telephone enquiry: /c/service/poststation/ Xiaomi House works from Tuesday to Sunday, 10 from morning to 6 pm.

Xiaomi mobile phone will be returned within seven days and replaced within fifteen days.

During the one-year warranty period, non-man-made damage is completely free.

B. If there is no outlet near you, if you bought it in Xiaomi official website, please go to Xiaomi official website, log in to the account where you bought the product, select Apply for after-sales in the order details, and then please keep your mobile phone open. The staff will contact you. Or you can call Xiaomi's customer service phone directly. If you didn't buy it from Xiaomi official website, you can call 400 1005678 for consultation.

I hope the above reply can help you.