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1.RE mode: RE full name recovery refers to a mode that can modify the data or system inside the Android machine, also known as engineering mode.

In this mode, we can flash in a new Android system, or back up or upgrade an existing one.

Entry method: Press and hold the power off button + volume - button in the shutdown state, and the phone vibrates once and then releases it to enter.

Flashing tutorial. Back up your data before flashing.

The first method.

It can be used by restarting automatically after the update is completed.

The second method: into recovery

In the corresponding firmware package, connect the mobile phone to the computer with a data cable, select 'Storage Device', and put the firmware package with the suffix ozip into the root directory of the mobile phone (the root directory is the top directory stored on the mobile phone);Or directly use the firmware package on the mobile phone, and put the firmware package with the suffix ozip into the root directory of the mobile phone (the root directory is the top directory stored on the mobile phone).

After pasting it in, you are ready to enter recovery mode, and the method of entering recovery mode:

After the phone is turned off, press and hold the power button and the volume button at the same time, and then let go when the phone vibrates, and enter the OPPO recovery mode at the same time.

Click directly on 'Chinese Simplified'

Click on 'Install Upgrade File'

Click on 'Save from phone'

Find the firmware package with the suffix ozip in the root directory and click to upgrade.

During the upgrade, you only need to wait for the upgrade to complete and do not do anything.

After the flashing is completed, click 'Restart' directly to complete the flashing.

The mobile version of Meizu Note cannot be swiped into the Unicom version, but it can be inserted and used with a Unicom mobile phone card. The reasons are as follows: 1. The network standard of the mobile phone is determined by the hardware of the mobile phone and cannot be changed by flashing; 2. The network standards supported by Meizu Note Mobile Edition are as shown in the figure, which supports mobile 4G, 3G, 2G networks and China Unicom's 2G network.

3. Since it supports China Unicom's 2G network, it can be inserted into a China Unicom mobile phone card. If you insert Unicom's 4G card or 3G card, you can only use the 2G network, and the network speed is slower than that of 4G and 3G. Here's why:

1. The network standard of the mobile phone is determined by the hardware of the mobile phone, and cannot be changed by flashing; 2. The network standards supported by Meizu Note Mobile Edition are as shown in the figure, which supports mobile 4G, 3G, 2G networks and China Unicom's 2G network. 3. Since it supports China Unicom's 2G network, it can be inserted into a China Unicom mobile phone card. If you insert a Unicom 4G card or 3G card, you can only use the 2G network, and the network speed is slower than that of 4G and 3G

1. Whether the SIM card is not in sufficient contact with the metal contacts of the mobile phone;

2. Whether the SIM card is damaged;

3. Whether the location is a signal blind area or suddenly no signal.

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Hello !

According to your description, the OPPO A57T is going to be flashed.

It is recommended to back up your phone's data, and after it is fully charged, follow these steps:

2 Press and hold the [Power Button] and [Volume-] buttons in the OFF state for 10 seconds.

3 Enter fastboot mode.

4 Connect to your PC and use Flash Tool to flash your computer.

5 The flashing is complete and the system restarts.

Pro, press the on/off key + volume plus key at the same time to force the power off after powering on.

Plugins are installed by default and do not require action.