Redmi 2 card 2 does not respond, Redmi 2 screen fails and does not respond

This may be a system issue, here's a general workaround:

1. Bring the invoice directly and go directly to the mobile phone store to find the seller, so that the seller can solve the mobile phone communication problem.

2. You can also bring the warranty card of the Xiaomi mobile phone to the Xiaomi after-sales service to repair the mobile phone.

3. You can also refer to the flashing method on Xiaomi's official website for flashing.

Hi! Shuangqing give it a try.

Shuangqing tutorial, which is used to clear the lock screen password, and remove multiple software flashback problems caused by flashing.

If you can, use the backup software that comes with your phone to back up.

Shuangqing needs to enter the REC mode of the mobile phone, and there are two ways to enter.

1. Click System Update, click the menu key to select Restart to Recovery, click OK, and the phone will reboot into Recovery mode.

2. In the shutdown state (buckle battery shutdown), press and hold the power button and the volume down button at the same time, and release the button after lighting up the screen.

Then I saw a green Android robot lying on the ground, and finally pressed the power button to enter.

At this time, the volume up button is the confirmation key, and the volume down button can be selected to start double clearing.

3.Select [Wipe Data Factory Reset] yes -

4.Select [wipe cache partition] yes -

5. Wait for the progress bar to end, press Back, select [Reboot System Now], and the phone will start to restart automatically.

Here's how it can be done:

1. Enter the hardware detection to check whether the SIM card is working normally (enter * * on the dialing interface), the following interface appears, and select a single test.

2. Select the SIM card, my previous status is not inserted, and the following is the normal state.

3. In "System Settings", select Backup & Reset, and back up the system locally for about 5 minutes.

4. In "System Settings", select Backup & Reset, restore the factory settings, the default settings, about 5 minutes. After restarting, the issue was resolved. The previous data can be restored with the previous data (there can be a non-service state in the middle, no matter what, just wait for the restoration).

1. SIM is composed of CPU, ROM, RAM, EEPROM and IO circuits. When the user uses the SIM, the mobile phone actually sends a command to the SIM card, and the SIM card should be executed or rejected according to the standard specifications; A SIM card is not just a memory for information.

In six cities, China Unicom officially launched the "eSIM No. 1 Dual Terminal" service in six cities: Shanghai, Tianjin, Guangzhou, Shenzhen, Zhengzhou, and Changsha. "eSIM One Number Multi-Terminal" means that the wearable device can share the number with the user's mobile phone without the need for a physical SIM card.

In the event of mobile phone screen failure, first of all, we need to clean the mobile phone screen, and the static electricity of the mobile phone screen may also cause the touch screen to fail, so you only need to gently wipe the entire screen with your hands. Or you can try to remove the protective film to clean the screen.

After finding that the phone's touch screen is not working, we can also try to press the lock screen button back and forth a few more times. In many cases, the phone's touch screen fails because of a slow response caused by software conflicts or incompatibilities, so it is possible to recover by pressing the lock screen button back and forth a few times.

For more serious cases, you can try by turning off the phone, then waiting for a few minutes before turning it on. Or remove all the memory cards and ** cards of the mobile phone, wait for a few minutes and then install them before trying.

In addition, there is a situation that is encountered by friends who often use beautification, this situation may be caused by the incompatibility of various beautification software and the system, and the solution is also very simple, generally uninstalling beautification software similar to the theme can be solved.

If you can't troubleshoot the problem through the above, you will have to restore it to factory settings. First, use a PC suite to back up the contents on your phone. Before paying attention to the soft grid, take out the memory card first, otherwise it will be formatted together, and the contents of the card will be completely deleted!

If this persists, try flashing your device again.

After flashing, if such a situation still exists, it is a hardware failure, and then you need to find after-sales service, or return to the factory for maintenance.

The problem could be:

One: There is sweat or oil on the screen.

Two: Playing while charging has the effect of static electricity.

Three: The phone is too hot.

Four: The mobile phone screen has been flooded.

Solution: Take a dry towel to wipe the screen clean, remove the battery and wait for a few minutes before installing it, if the problem is still the same, take it to the warranty, Xiangmi is this urine.

It's broken, don't search it, just change your phone. I also have a Redmi phone touch screen failure, I didn't fix it, so I just bought a second-hand phone, which is not expensive.

The card is burned, the card is in arrears for too long, if these two points are okay, it is a mobile phone problem.

1. It may be that there is no service due to the problem of the mobile phone card (such as arrears and invalid cards), you can reinsert a new mobile phone card into the mobile phone to try.

2. It may also be that there is no signal near the mobile phone, resulting in no service on display, you can test it in a different place with a signal.

3. It may also be a system problem that causes no service to be displayed after installing the card, you can restart the phone to try, if necessary, you can consider restoring the system of the mobile phone to the factory setting state or upgrading to the latest version to solve the problem.

4. Or there is a problem with the hardware of the mobile phone that causes the display to have no service, such as the failure of the baseband, RF antenna, internal circuit, etc. of the mobile phone; It is necessary to contact Xiaomi's after-sales service to test and repair the mobile phone to solve the problem.

Hello. It is recommended that you check it out by following the following methods:

Whether the SIM card is inserted correctly.

Whether the wrong SIM card is inserted, such as the standard version inserts the telecom SIM card, etc.

Go to Hardware Detection to see if the SIM card is working properly (enter * * on the dial screen). If the SIM status is normal, go to step 5, or if the status is unknown, go to step 4.

Try to replace a different SIM card, if the status is still unknown during hardware testing, it is recommended to go to the repair point for testing; If the detection status is normal, it is recommended to go to the carrier to replace a SIM card (the SIM card may be aging).

Whether the network type is correct and whether the carrier selects Automatic. (China Unicom selects 3G priority, mobile selects only 2G, and China Telecom selects automatic).

If the network type of the non-telecom mobile phone is CDMA automatic, you need to change the network type to "WCDMA Preferred" in the mobile phone information (**) to solve the problem.

Whether there is no signal in the area. You need to check whether other mobile phones on the same network have signals.

Back up your data, flash to the latest system version and try again.

If the above methods still do not help you solve the problem, please go to your nearest repair point for repair inspection.

Hello. You need to reflash the system to recover, and the card is simple, first.

There are three solutions to the newly bought Redmi 2 card, and the reason for the analysis:

1. If the root permission is enabled under the stable version of the system, once the root permission is enabled on the stable version of the system, there will be a problem.

2. Install third-party security management software, if there is one, uninstall it directly, there is LBE inside the phone, and then install it will cause problems with the phone due to conflicts.

3. Operating the mobile phone while charging will cause the battery to heat up and affect the use.