How to unlock android mobile without password?

You could visit customer care center to recover your mobile in-case if you couldn’t login by any chance.

 On a computer or other mobile phone, visit: google.com/android/devicemanager
Sign in using your Google login details that you also used on your locked phone.

In the ADM interface, select the device you need to unlock (if it isn’t already selected).
Select ‘Lock’

In the appearing window, enter a temporary password. You don’t have to enter a recovery message. Now click ‘Lock’ again.

If it was successful, you should see a confirmation below the box with the buttons Ring, Lock and Erase.
On your phone you should now see a password field in which you should enter the temporary password. This should unlock your phone.

Now, before you go on with your life, go to your phone’s lock screen settings and disable the temporary password.

That’s it!

Know more : trendblog.net/how-to-bypass-android-phone-lock-screen-pattern-pin-password/

If you don't have a Google account and if you want to keep all data on the phone, then you should use Android Data Recovery instead. There is password removal tool embedded into the program and you can remove the password of PIN/patterns/finger print in a few minutes. Mostly importantly, there is no data loss by using this method.

You can unlock your android phone or tablet with the help of EaseUS MobiSaver for Android. this software will guide to simply extract and backup Android data from locked Android phone or tablets within 3 simple steps.

PhoneRescue for Android could be the most ideal choice for Android users to unlock Android phone without password

PhoneRescue for Android could be the most ideal choice for Android users to unlock Android phone without password

Download dr.fone application which is a Lock Screen Removal software which you can download it on your system. Within seconds you can learn how to unlock Android pattern lock without factory reset using dr.fone. In this way, you won’t lose your data while removing its pattern lock.

Step 1 - Install PhoneRescue for Android on your computer > Run it > Connect your Android phone to the computer via its USB cable.

Step 2 - Click the second button on the upper left corner to choose Lock Screen Removal function.

Step 3 - After it recognised your Android device, click on Start Unlock button to start the removal process.

Step 4 - When the screen lock is removed successfully, the interface below will display and your Android phone will restart automatically.