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How to exit “工程模式”?

How to perform “Restore all settings”?

Can I install the system update on my rooted phone normally?

Can I root my phone?

How can I know whether the system of my phone is 64-bit or 32-bit?

Where can I find RAM details on my phone?

How to enter Engine mode?

How to recover my rooted phone?

My phone shows Encryption failed. What should I do?

How to change the status from "is_root=1" to "is_root=0" ?

Why is the total amount of the RAM the apps use less than the Used RAM?

How to forcibly reboot my phone?

Why are there ads always popping up on my phone?

How to perform Wipe data?

Why is the available RAM less than the fact RAM although I close all apps?

Why is it still "is root=1" although my phone has been recovered?

How to check if my phone is rooted?

Will "Wipe data" damage my phone?

Find my phone
Lag & Stuck
Storage & File Manager
Backup & vivoCloud
Music & Video
vivo & Google account
Purchase consulting
Personal Hotspot & Wi-Fi