I downloaded and installed version 0.29.2 of pokemon go on my Android phone, running lollipop. The app works fine most of the time, however, when I open the app without a WiFi connection (with mobile data on and working), it gets stuck on around 20% on the loading screen and doesn't budge.
The app works when I open it with a Wi-Fi connection and then leave Wi-Fi range or turn off Wi-Fi after it has passed the loading screen. However, the app will not pass the loading screen without WiFi. (Edit: Hotspots don't work either)
I've tried all the usual solutions – restarting, clearing cache, reinstalling, turning off and on mobile data. None of them work.
Any idea how I can start the app when I'm not in WiFi range?
Best Answer
Check to see if 'Restrict app background data' is turned on.
To do that for an individual app: Go to Settings -> Apps -> [The App] -> Data Usage
There is a little slider that says 'Restrict app background data'. Make sure it is turned off for Pokemon Go, Google Play Store and Google Play Services.
Make sure they are all turned off. In my personal experience, this solved the problem of not being able to log in without WiFi.