I have just upgraded to a new phone so I installed the coinbase app. I was surprised to find it was utterly useless. While it accepts my username and password it just hangs and doesn't show me any of the app screens. I literally have about 6 apps on this phone. It was fresh out of the box 3 days ago. The chances of any form of conflict are minimal which means the problem is with the app and the developers and they need to sort it out before I move my crypto to a usable app and service.