Several reputable and third-party tools are frequently used for these specific brands: Tool Category Key Capabilities Hydra Tool , Chimera Tool , UnlockTool

If you have a valid proof of purchase, the official Vivo or OPPO support teams can often unlock the device for you safely. How to Unlock Your Phone When You Can't Remember Password

Using these tools on stolen or lost devices is illegal and can lead to criminal charges.

User-friendly interfaces for bypassing locks on most Android 7.0+ devices. Recovery Mode, "Emergency Call" bypass

One-click FRP removal, IMEI repair, and deep system flashing. Tenorshare 4uKey , Appgeeker Android Unlocker

Unlock and FRP (Factory Reset Protection) removal tools for and OPPO devices typically offer a suite of features designed to bypass security locks after a factory reset or forgotten password. Key Features

Removes Google Account verification (FRP) without needing the previous owner's credentials.

Clears patterns, 4/6-digit PINs, passwords, Fingerprints, and Face ID.