iPhone 6 Gyroscope Doesn't Work

I have an iPhone 6 running iOS 8.3.

When I first bought it the compass worked fine. Currently the portrait orientation does not work (I've turned orientation on and off), level does not recognize when you turn the phone, text messaging will not turn horizontal, and the compass will not calibrate (I've opened the app and closed it to restart it.)

I have done the following:

• Ensured portrait orientation lock is off.
• Restarted the phone by holding down the home and lock button.
• Backed up my phone and performed a factory reset

I'm out of options. Any advice?