How do I troubleshoot issues with mobile payments on my phone?

1. Check if you have the latest version of the payment app installed on your phone.
2. Be sure the mobile network is connected and working.
3. Verify that the phone number associated with your payment account is correct.
4. Check if the payment account is still active.
5. Verify you have enough balance in your payment account.
6. Check if your region is supported by the mobile payment app.
7. Reconfirm your payment information is correct.
8. Contact your payment service provider for assistance.