iphone 6 screen is unstable

Hi

If the screen is physically unstable, contact Apple Support (mail-in service may be available) or make a Genius Bar reservation to have your iPhone checked and, if recommended by Apple, serviced (whether under warranty or via chargeable repair service):

• Contact - Official Apple Support
• https://twitter.com/applesupport
• http://www.apple.com/retail/geniusbar/

To check your warranty status:

https://checkcoverage.apple.com