Always prompt that the storage space is insufficient. Sometimes you can't even get a text message.

According to your description, because you didn't provide the specific model, the phone needs to optimize the memory or has indicated that the memory is full/insufficient. I suggest you:

1. Press and hold the home key, open the ram manager, clean up the running application, and release the program memory.

2. Uninstall the self-installed application.

3. Clear the mobile phone's Internet cache: browser-menu key-settings-privacy security-clear the cache and clear the history.

4. If it is a picture/video shot by a camera, you can set the storage path to an external SD card in advance. Operation: Open the camera-Settings-Memory-Memory Card.

5. Clear the recorded incoming calls, text messages, etc.

6. Move the multimedia files to the external SD card. Operation:

1). For Android 2.3/4.0/4. 1 system: My Files-All Files -sdcard0- Find the folder to be moved-Press and hold-Move to-Return to the outside _sd- Click "Move here".

2). If it is above Android 4.2: Application-My Files-All Files-Device Storage-Find the folder to be moved and open it-Menu button-Select All-Click the three column icons-Move, return to the parent directory, click the SD memory card-select the related folder (or create a new folder)-and move it here.

Note: For Android 2.2 and earlier versions (some Android 2.3 systems do not support the built-in hard disk), multimedia files are stored in the external SD card by default.

7. Back up the important data in the mobile phone and restore the factory settings.

Welcome to Samsung Care Center:

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