Document moving solution
Open the file manager, select those folders that occupy space, click the menu (touch-sensitive key in the lower left corner), select "Move", then point to your SD card and get it with one click!
Optimization of photo/video storage
Click the pinion before turning on the camera/camcorder next time. , enter the "Memory" setting and change the path to SD card. In this way, the newly taken photos and videos will be saved directly to the SD card!
Software slimming plan
Look at your mobile phone. What third-party applications do you seldom use? Decisively uninstall them and lose weight on your mobile phone!
Restore factory settings
This is the most thorough but extreme method. Remember to back up important data first! Then, one-click recovery, let your mobile phone return to "youth", and the memory is full instantly!