Uni Mainz app not working? crashes or has problems?

Uni Mainz Status

Last Updated on 2024-03-13 by Johannes Gutenberg-Universität Mainz

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Common Uni Mainz Problems & Solutions. Troubleshooting Guide

Complete guide to troubleshoot Uni Mainz app on iOS and Android devices. Solve all Uni Mainz app problems, errors, connection issues, installation problems and crashes.

Table of Contents:

Uni Mainz iPhone Issues and Solutions

Uni Mainz iOS app crashes, not working, errors
Uni Mainz iOS app network issues
Uni Mainz on iOS has black/white screen

Uni Mainz Android App Issues and Solutions

Uni Mainz has errors/crashing/not working
Uni Mainz server network connectivity issues
Uni Mainz has black screen

Uni Mainz iPhone Issues and Solutions

Here are some helpful workarounds that should work whenever Uni Mainz app keeps crashing or doesn't work as expected on your iPhone 14, 13,12,10,8,7,6, SE,XS,XR.

How to fix Uni Mainz app crashes or not working on Iphone (iOS):

Close and restart the Uni Mainz app on iPhone
Update Uni Mainz app to the Latest Version for iOS
Uninstall and reinstall Uni Mainz iPhone app
Update your iPhone to the latest iOS version

Fix Uni Mainz on iPhone unable to connect to server/internet connection issues::

To resolve Uni Mainz network issues, Reset phone network settings:
1. On iphone, Goto "Settings" » "General" » "Reset" » "Reset Network Settings".
2. Enter your device passcode. Then confirm "Reset Network Settings".

Turn off your VPN:
1. Goto "Settings" » "General" » "VPN".

Fix Uni Mainz black/white screen (blank screen) on iPhone:

Follow the Uni Mainz iOS app troubleshooting guide Here →

Uni Mainz Android App Issues and Solutions

Fix Uni Mainz not working on Android, crashes, errors or is unresponsive:

Follow these steps to resolve intermittent Uni Mainz app issues:

Force Stop the Uni Mainz App
1. On android, goto "Settings" » click Uni Mainz app. » click "Force Stop".

Update Uni Mainz to the latest version on PlayStore

Clear Uni Mainz App Cache and Data:
1. On your device, goto "Settings" » click "Apps" » select "Uni Mainz app" » click "Storage" » click "Clear Data" option. This Clears both data and cache.
2. Relaunch Uni Mainz.

Fix Uni Mainz unable to contact server/ Uni Mainz internet connection errors on Android:

This issue is usually caused by your network. Here is how to fix:

On android, goto "Settings" » "Apps" or "Manage Apps" tab.
Click Uni Mainz » "Force Stop".
Next, goto "Storage" » "Clear Data".
Again, got Uni Mainz » "Mobile Data" » "Allow Background Data Usage".
Go back to "Settings" » "Connections" » "Mobile Network" » "Network Mode".
Now, put your network on 4G e.g. LTE/3G/2G (auto connect)
Relaunch Uni Mainz on android.

Solve Uni Mainz black/white screens issue on Android:

Follow the Uni Mainz android app crash troubleshooting guide Here →

Contact Support

Some issues cannot be easily resolved through online tutorials or self help. So we made it easy to get in contact with the support team at Johannes Gutenberg-Universität Mainz, developers of Uni Mainz.

About this app

The JGU app is a service for students and employees of the Johannes Gutenberg University Mainz (JGU). - Digital contact tracing: registration via QR code for attended events at JGU.