Here are the steps to deposit a check on Wells Fargo:

1. Download and install the Wells Fargo Mobile app on your smartphone or tablet.
2. Sign on to your account using your login details.
3. Select "Deposit" or "Deposit Checks" in the bottom bar.
4. Choose the account you want to deposit the check into.
5. Enter the amount of your check in the third box.
6. Take a photo of the front and back of your endorsed check.
7. Submit your deposit.

Make sure to sign the back of your check and write "For Mobile Deposit at Wells Fargo Only" below your signature before taking a photo of it.