After the red rice mobile phone system is upgraded to 13.0, the SMS function can't get in, and no contact person can be found. How should I reply?

Try double liquidation.

Double clear tutorial, which is used to clear the screen lock password and solve the problem of multiple software flashbacks caused by brushing the machine.

Before the double clearing, if possible, make a backup with the backup software that comes with your mobile phone.

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

1, click System Update, click the menu button to select Restart to Recovery, and click OK to restart the phone and enter recovery mode.

2. In the off state (battery off), press and hold the power button and the volume down button at the same time, light up the screen and release the button.

Then you will see three options.

Recovery mode means entering recording mode.

Quick start mode means entering line brush mode.

A normal startup means a reboot.

At this time, the volume down key is the selection key, the volume up key is the OK key, and the power button is useless.

Press the Volume Down key to move the cursor to the recovery mode, then press the Volume Up key to confirm, and wait for a moment to appear.

A green Android robot lying on the ground finally pressed the power button to enter.

At this time, the volume up key is the confirmation key, and you can select the volume down key to start double clearing.

3. Select Erase Data/Restore Factory Settings → Yes-* * * * * *

4. Select Erase Cache Partition → Yes-* * * *.

5. After waiting for the progress bar to end, press Enter and select Restart the system immediately, and the mobile phone will start to restart automatically.