WEBSITE T-MOBILE.COM LOGGED IN - Go to t-mobile.com and log in to your account. - Click BILL. - Click Pay Now. PAY AS A GUEST - Go to T-Mobile.com - Click Pay as a Guest - ( No Login Required ) - Depending on which bill you'd like to pay for, choose T-Mobile or Sprint. - Enter the mobile number or the account number you would like to make a payment for. - Tap the 'I am not a robot' checkbox or answer the security challenge (i.e., tap image boxes that contain the descriptions). - Click Next. - Enter the payment amount and payment method details. - Click Agree & Submit. - The account holder will receive an automatic SMS notification of payment and email receipt if selected during the process. EIP PAYMENTS - Log in to t.mobile.com - Click Bill & pay. - Under the Make a payment option, select More payment options. - Select View device payment plans. - Select the device /line that you want to make a payment for. - Select Make a payment and follow the instructions to make an EIP payment. T-MOBILE APP LOGGED IN - Open the app. If you don't have it, download it now. - Tap BILL. - Scroll to and tap Make a payment. - Select the amount to pay, the date to make the payment on, and the payment method. - Tap Agree and Submit. PAY AS A GUEST - Open the T-Mobile app. - On the app login screen, tap Pay as a guest. - Depending on which bill you'd like to pay for, choose T-Mobile or Sprint. - Enter the mobile number or the account number you would like to make a payment for. - Re-enter the number to confirm. - Tap the 'I am not a robot' checkbox or answer the security challenge (i.e., tap image boxes that contain the descriptions) and click verify. - Click Next. - Enter the payment amount. - In the 'Payment details' field, tap Add a payment method. - Select Apple Pay or Add a card.If adding a new card, enter your card details, then tap Select payment method. - Enter your email address in the Email a receipt (optional) field if desired. The account holder will receive an automatic SMS notification of payment as well. - Click Agree & Submit. EIP PAYMENT - Open the app. If you don't have it, download it now. - Tap BILL. - Under the Make a payment option, select More payment options. - Select View device payment plans. - Select the device /line that you want to make a payment for. - Select Make a payment and follow the instructions to make an EIP payment.