Hello there,my tablet is multifunctional which is internet mobile device with android OS,otatel its brand..the problem is my tablet can't even install any apps after I install two .the internal storage is full and always out the sentence not enough space but my sd card or memory card still has 7.5GB..lreally blur at first then I send to the shop and the seller asks me to format all..but it seem like not work..so I try to transfer the apps to SD card but it can't be opened..why?it totally make me feel like wanna to just throw of it..and now I can't even install anythings..so,what should I do to make my internal storage not always in full because I don't even install any .really need a solution...
