How to Easily Master Format OPPO F9 (F9 PRO) with Safety Hard Reset?

hard reset oppo f9 / f9 pro

Tips and tricks to fix OPPO F9 or OPPO F9 PRO problems. This is Android smartphone from Oppo which have 6.3 inches LCD screen width using LTPS IPS with 19.5:9 aspect ratio. The first operating system use Android Oreo 8.1. This phone powered by Mediatek MT6771 Helio P60 with Octa Core processor, enough to play 3D HD … Read more