You need a PC with ADB and Fastboot drivers installed. You can download the official platform tools from Android Developers .
Successfully unlocking your Vivo Y71 depends heavily on proper preparation. The device is based on the processor (MSM8917), running Android 8.1 (Oreo) with Vivo's Funtouch OS 4.0 . Because of its Qualcomm chipset, the Y71 supports both the standard Fastboot and the more advanced EDL (Emergency Download Mode) methods.
A locked bootloader ensures only authorized software runs. Unlocking it makes the device vulnerable if it is lost or stolen. unlock bootloader vivo y71 high quality
Unlocking the bootloader on your Vivo Y71 comes with some risks, including:
: It exposes system permissions, making the device more vulnerable to malicious software. Unofficial Process Overview You need a PC with ADB and Fastboot drivers installed
Before you start the unlocking process, make sure you have the following:
Removing bootloader protection makes your device more susceptible to malware and unauthorized access if misplaced. The device is based on the processor (MSM8917),
Find the or Build Number and tap it seven times consecutively. You will see a toast message saying, “You are now a developer!”
There are several commands that might work depending on the specific firmware version: fastboot bbk unlock_vivo fastboot flashing unlock
: An unlocked device displays a warning screen: "Your device has been unlocked and can‘t be trusted"