How does android operating system transfer SMS to SIM or SD card?

First, back up the information to the external SIM card:

1. In standby mode, click Info.

2. Open the SMS.

3. Click the menu button in the lower left corner of the phone and select Copy to SIM card. After the above operation, the information is copied to the SIM card.

If you want to determine whether the SIM card has been stored, please inquire by the following operations:

1. In standby mode, click Info.

2. Click the menu button in the lower left corner of the phone and select Settings.

3. Slide the screen up with your finger and click on the information in the management SIM card to view it.

Note: Only short message backup within 70 words is supported, and the number of short messages that can be copied depends on the capacity of SIM card.

Second, backup the information to an external SD card.

1. In standby mode, click Info.

2. Open the SMS.

3. Click the menu button in the lower left corner of the phone and select Copy to SD card. After the above operations are completed, the information is copied to the SD card.

View backup information:

1. In standby mode, click Application.

2. Click on my file, and then select SD memory card.

3. Select a backup.

4. then click vMessage, and you will have the information you just saved. This information is backup information in vmg format and cannot be opened directly. Before viewing, you need to restore the backup information to your mobile phone.

Tip: SMS can only be copied to SD card, and can only be used for a single SMS.

Note: To do the above operation, a memory card must be installed.