mobile

The thing is.. i bought an M7 to a guy, who told me it was modified.. when i restarted the phone from settings... the camera couldnt save photos because it said that sd card was full (m7 does not use sd card) so he told me he had to start the phone loading the firmware from a usb with the OTG cable.. he did, and then the camera issue was solved.. he said it was because since the phone was modified the rom or firm (ive never rooted a phone...) some folders were mixed up so if you restart the phone from settings, some folders get mixed up making the phone believe theres a full sd card inside...

also the battery % does not drop... ive read thats because the modification of roms..

so i wanted to know is there anyway i can restore the phone to its original settings.. and stop having these issues, or at least put a rom without this kind of problems?

the guy said i cant.. till a new firmware comes out... :/

here are some pics... please help!!

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