Follow these steps to Increase Internal Storage of any MTK Device:
Step 1. First of take a backup of your mobile & copy all content from your internal memory storage to SD card
Step 2. Download Tool
Step 3. Install and open Tool
Step 4. Choose desired size for internal storage not more than 2.5 GB(
Step 5. Click on yes, it is right side because it is not in English
Step 6. Go to Recovery Mode
Step 7. Wipe cache / factory reset
Step 8. Restore backup
Step 9. Wipe dalvik cache
Step 10. Reboot your phone
Step 11. If you get damaged SD card notification, then format SD card.
