In addition, the game also requires a stable internet connection, along with GPS and location services. And, the iOS version should not be less than iOS 9.Make sure you don’t run this game on older than iPhone 5s.Pokemon GO does not run on devices which have screen resolution lower than 1280×720 pixels, make sure to check for that as well.Make sure the Android version is KitKat, i.e., Android v4.4 or above to run the game.If your phone is lacking any of the following features, it will most likely present you with the “Pokémon GO unable to authenticate” error. Like any other game or software, Pokemon GO also has its own system requirements to run properly. Make sure to check if the phone is compatible to run the game or not. If you are trying to run the game on a different smartphone, and it is showing such errors while working nicely on your other devices. Thus, it is significantly advised to keep the game always up to date to never experience such errors. Hence, if there is an update available for the game and you are still running an outdated version of the game, “Unable to authenticate Pokemon Go” errors are most likely to occur. However, most people keep the auto-update feature on their smartphone Off to save the mobile data, or maybe for some other reason. As you know, Pokemon GO is an online game and requires you to stay updated to continue playing.
