xdarom is Biggest Smartphone Hardware & software Solution.How Flash Android Phone Manual guideline.Number one smartphone Solution center.
回答“data and text work fine. Can not make or receive phone calls”here is the full guide > https://xdarom.com/phone-wont-make-calls-but-i-can-text/
回答“Why is my phone oppo A3s on blank/black screen? How to fix it”OPPO Latest Flash Tool
回答“Gradiant dark shade in bottom of screen, doing video editing”Good suggestion you may search in the google for good video editing software. and keep learning for android download kinemaster mod apk
回答“Why is my phone oppo A3s on blank/black screen? How to fix it”Download OPPO Latest Version Firmware & Flash With This Firnware Check Out: Link