Before proceeding, you must understand the risks and prepare your device. Failing to do so can permanently damage your phone.

To confirm success, navigate back to > More Settings > Developer Options .

Before proceeding, you must understand the risks involved in this technical process.

Try unlocking the bootloader. Note: Most modern Vivo devices require specialized tools rather than these standard commands, but try this first. fastboot flashing unlock Alternatively, try: fastboot oem unlock

To communicate with your phone via a PC, it must be in Fastboot mode. Power off the device completely. Press and hold the buttons simultaneously until the Vivo logo appears. Use the volume keys to select Fastboot Mode and confirm with the Power button. Step 3: Unofficial Unlock Commands

Safety instructions and precautions of unlocking Bootloader - Xiaomi

When the screen lights up, release the buttons and select using the volume keys. Connect your phone to the PC via a USB cable. Phase 2: Unlocking via CMD Open the folder where you installed ADB/Fastboot.

The Vivo Y71, launched in 2018, remains a resilient budget smartphone. Powered by the Qualcomm Snapdragon 425 (MSM8917) and running Funtouch OS, it’s a reliable device—but heavily restricted. Unlocking the bootloader is the first step toward true Android customization.