Before Unlocking The VIVO Y91c / Y91i SIM Lock (Unlock) Support All Version With UnlockTool, Make Sure The Following Steps Are Performed.
- VIVO Y91c
- VIVO Y91i
How to use :
- Open UnlockTool
- Click on MEDINTEK Tab
- Click on PRELOADER Auth
- Clik on “ FLASH ” Button
- Just Insert USB cable to Phone