repeatedly (usually seven times) until a message says "You are now in Developer Mode". Go back to More Settings and open the now-visible Developer Options OEM unlocking USB debugging Step 2: Enter Fastboot Mode

: Navigate to Settings > About phone and tap the Software version (or Build number) seven times until you see a message stating you are a developer .

That said, thousands of users have successfully unlocked their Y71s — and you can too. The for MediaTek variants is your best bet, offering the highest success rate with relatively low brick risk. If you have a Qualcomm Y71A, the EDL method is more complex but doable with careful research.

Your device becomes more vulnerable to malware if physical access is gained.

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

Check the toggle; it should show "Bootloader is unlocked." Troubleshooting

Before your computer can communicate with your Vivo Y71 in the necessary mode, you must toggle a few hidden Android settings. Open on your Vivo Y71. Navigate to More Settings > About Phone .

Save it offline – Vivo actively patches EDL access in newer security updates.

Before you start the process of unlocking the bootloader, make sure you have the following:

The official process works like this:

If the phone shows no signs of life:

Ensure your Vivo Y71 has at least 60% battery power.

Q: Can I lock the bootloader again? A: Yes, you can lock the bootloader again using the fastboot oem lock command. However, this may void your warranty and may cause data loss.

: Ensure the phone has at least 60% charge to prevent shutdown during the process.