The external SD card of Samsung s4 mobile phone has become read-only, so it is impossible to delete and save files. You just bought it less than two months ago, and it was in good condition the previo

The external SD card of Samsung s4 mobile phone has become read-only, so it is impossible to delete and save files. You just bought it less than two months ago, and it was in good condition the previous month. Hello:

According to the situation you described, I suggest you try the following methods:

1. Try to replace another SD card;

2. Check whether there may be incompatibility caused by downloading third-party software for setting;

3. If the problem still exists, it is recommended that you back up data (such as address book, SMS and photos) and restore factory settings (Settings-Account/General-Reset-Restore factory settings).

4. If the problem still exists after the above operations, please send your mobile phone, purchase invoice and maintenance card to Samsung Service Center for professional inspection. Please visit the specific service center address:

/support/location/supportservicelocation . do？ Page = service. Location and place. cid = cn _ PPC _ support _ service _ repair net _ 120522

Welcome to Samsung's service platform for maintenance reservation: www.samsung.com.cn/pre-booking.