Please check your mobile storage space.Check your wifi / internet connection for connectivity.Your account may be banned or deactivated for activities.If you're using third-party social networks to login such as facebook, twitter, google etc, check whether that service is working properly by visiting their official website.Please confirm the details that you are entering is correct. You may be trying with wrong login credentials.The myAT&T server may be down and that is causing the login/account issue.If you have login or account related issue, please check the following steps. ✅ I'm having myAT&T login issue or account related issues. Too many users using the app at same time.Your wifi / mobile data connection not working properly.The myAT&T app server may be down and that is causing the loading issue.There are few situations that may cause the load issue in mobile apps. ✅ My myAT&T app wont load or not working properly (loading error / server error / connection error / Screen Freeze / Ping Problem). If that is your case, try installing older versions of the app.
Even in some rare cases, the re-install step also don't work.iOS usually provides an option to restore settings and content from iCloud backup, if you've enabled it previously. Finally, if you can't fix it with anything, you may need to uninstall the app and re-install it.After that put it to charge, and press the power button. If none of the above working, you can wait till your phone battery drains and it turns off automatically.Press the power off button for few seconds and then choose restart from the menu to restart your device.Now you can try opening the app, it may work fine. Then you close the app that has this issue. You just need to press the recent applications menu (usually the first left button) in your phone.