The internal storage of my Zcer Liquid Z530 fulls up all the time, although I practically don't store anything in the internal storage, apart from necessary apps. Because of this, it freeze quite often. Sometimes it restarts without any warning. And it takes time, because it has to optimise approximately 30 apps. It is almost unusable as a phone.
I moved all the apps that available to move to SD card. No files like photo are stored in the onternal storage. Z530's internal storage should be 8GB. Both in Settting-Storage, in File manager, it seems that my Z530 only recognises 4GB of it.
How can I solve this, 'internal storage is full, but it should not be full' issue?????