Mobile payment apps made money transfer and payments a lot easier. Now, you don’t have to visit the bank to send money to someone or hand in cash if you need to pay for your purchase. With just a few taps on your mobile device, you can send or receive money online that is good as cash.
Zelle is among the top mobile payment apps that you can use for your money transfer needs. Zelle is less complicated and safer since it only needs the receiver’s phone number or email address. You don’t have to expose your bank account to send or receive money to a person. In addition, Zelle processes the fund transfer in minutes.
However, any problem regarding your Zelle app or account can cause a huge amount of worry on your part. Since your bank account connects to your Zelle account, any issue will put it at risk.
If you find yourself seeing the sign-in error code A101 on the Zelle mobile app for Android phone or iPhone devices, you can do several of the methods below to fix the issue and access your account.
How to Troubleshoot Zelle Mobile Payment App Sign-in Issue with Error Code A101

There are different factors that may trigger the login authentication error code A101 on your Zelle smartphone app. How you deal with the issue depends on what may be causing it. You can try each of the solutions below and see if it works for you.
#1 – Make Sure you are Using the Same Mobile Number
One of the common issues with the error code A101 is a conflict in the registered mobile number and the number you use to sign-in. If it is not the same as the number you registered in the app, you will likely receive the error. If your mobile device uses two different SIM cards or uses two different mobile numbers, check if it is currently using the number you used on your Zelle account.
#2 – Connect to a Different Internet Network
Sometimes, the network issues trigger the error, so best to check your current network connection. If you have a different network available, you can switch to it. For instance, if you are using your WiFi connection, you may switch to your mobile data. But, make sure that you avoid using a public network so as not to compromise the security of your online payment account.
#3 – Clear the Zelle App Cache and Data
- On your Android device, go to the Settings menu.
- Select Apps.
- Look for Zelle and tap to open it.
- Go to Storage.
- Tap Clear Cache and Clear Data.
- For iOS devices, you will need to uninstall and reinstall the app to clear the cache.
#4 – Reinstall the Zelle App on Android or iOS

You can uninstall the Zelle app on your mobile device. After a few minutes of waiting, try to reinstall a new version of the Zelle app from the Google Play Store for Android smartphones or Apple App Store for your iOS device.
#5 – Contact Zelle Customer Support
If none of the solutions work, you can call the Zelle customer support team and report your issue.
Did any of the solutions above help you resolve your Zelle sign in authentication issue? Which one did? We want to know more, so please drop us a comment below.