Iphone 5 home screen not working?

I got my iPhone 5 a few months ago and had no problems until now. The home screen suddenly stopped working my warranty is still on will apple fix this for me?

Do a hard reboot… Press together home+power keys until apple logo apears then let go… No data will be lost during this reboot… Work now?

if not, do a itunes restoral… Data will be lost if you have not done a itunes backup… Work now?

if not, then this is a phone issue… Call Applecare at 1800myiphone or call your wireless carrier and be transfered to Apple. Wireless carriers do NOT handle Iphone hardware or software issues prer Apple/Carrier contract