Delete SMS passwords from all telecom mobile phones.

1. Generally, the initial password for deleting short messages of telecom mobile phones is 1 122 or 1234 or 0000.

2. If you swipe your phone or change it during sleepwalking, the above password will not be changed.

3. If you can't try to succeed, you can consult the buyer in detail.

4. If factory settings need to be restored: click Start-Settings-System-Clear Memory, then select the "Clear Memory Only" option and enter the password 1234 to continue. The phone will restart, just wait for the startup attempt.

"Telecom customized mobile phone" refers to the mobile phone customized by China Telecom for customers. As one of the main operators of mobile communication services in China, China Telecom's "customized mobile phones" come from various well-known mobile phone brands. Different from the same model sold in the market, the "customized mobile phone" not only has the logo of China Telecom on the body and outer packaging, but also has customized menus and built-in services.