It says it will test your device if your having problems but it couldn't have tested my device and foundno problems!!!! The camera was off line and still is!!!! Butt said it's fine. Also i have the regular att app and both of them are slow as can be to just sign in to them. That damn circle showing "buffering" goes on and on. The avatar that says it will help has NEVER helped me with one problem I've had either. I hate AT & T!