For Internal Storage Repartition
ALWAYS BACK UP!!!!
*don't use 2.5gb or else you'll get a damaged phone storage ^_^, follow instruction nung app
instruction : SOP ( make a cwm or twrp backup )
1. download MT657x data repartition from the link
2. place the apk to your sd card and install
3. open the installed MT657x app(supersu will pop up select grant acess)
4. choose 2gb for data partition (don't use 2.5gb or else you'll get a damaged phone storage)
5. after choosing, it will require you to reboot on recovery(cwm on my side) wipe data/factory reset and reboot system.
6. check your internal storage if successful then
6. reboot to recovery, restore your backup
NOTE: (Dong y)= OK