Every Saturday night at 10 pm MST my phone starts vibrating and going crazy.

[AC Question]

The phone is a Galaxy S5. I have to shut it down until morning for it to quit and work normally again.

 

[B. Diddy]

Welcome to Android Central! Can you be more specific about the "going crazy" part? Or is it just the vibration that you're talking about? Are any recurring alarms set? Is this associated with any notifications?

 

[melmill]

Not only does it continually vibrate but the screen jumps all over and is unusable. I did notice last night that I got a notice for my water intake that has to do with my Samsung Gear Fit, but it might have been a coincidence that they were on at the same time.

 

[B. Diddy]

Without anything else to go on, I'd try a general step like wiping the cache partition first: http://support.t-mobile.com/docs/DOC-10404