To unlock any android pattern, first you have to open recovery mode on android mobile then you can unlock pattern lock.
To open recovery mode on android mobile keep pressing the Volume up + Home + Power button. once the screen gets open you will go to recovery mode. If this method does not work on your mobile then simply open google and search, recovery mode on, and your mobile model. Eg- recovery mode on Redmi.
How to unlock forgotten Android mobile pattern lock | Pin password lock
Step 1:- To unlock the pattern lock simply switch off your android mobile and remove the battery and insert it again.
Step 2:- After that keep pressing Volume up + Home + Power button to open recovery mode on android mobile.
Step 3:- Now you will see you have opened a recovery mode now here you can unlock your mobile Make sure here touch will not work so you have to use the volume up & volume down buttons for up & down and power
Step 4:- So here first select wipe cache partition & press the power button after that select wipe data/factory reset and select yes and press the power button.
Step 5:- Now select the first option and reboot your system now see it will take a time 10 to 15 minutes.
Step 6:- Once your mobile got restarted now you can set up your mobile here. It will not ask for any pattern lock until your mobile gets completely formatted.
• This is how you can unlock your android mobile pattern lock but it will delete your all data from internal storage