If you have lost your password but still have your private key, you can reset the password on your mobile app by following below procedure:
Before you proceed, please make sure you have backed up your Seed Phrase / Secret Recovery Phrase and private keys correctly. Here's how:
How to back up Seed Phrase / Secret Recovery Phrase
Exporting a MetaMask Account
Once you have all the critical info, log out of your mobile app> click on "reset wallet" and follow the prompt.
Choose "Import using Seed Phrase / Secret Recovery Phrase" on below screen:
You will need to enter your original Seed Phrase / Secret Recovery Phrase and a NEW password.
If you had any custom token or custom RPC networks in original wallet, you will need to add them manually.
To better communicate the importance of never sharing your seed phrase, we've changed the name of the phrase to "secret recovery phrase". Learn more here.