According to Apple, repair pricing depends on the diagnosis of your product and your coverage under warranty or AppleCare+. If your issue is covered under warranty or AppleCare+ and was not caused by accidental damage, there's no charge.
If your iPhone has damage, AppleCare+ covers two incidents, each with a service fee. You can also use Apple Express Replacement Service to get a replacement before sending us your iPhone. Not sure if you're covered? Check if you have AppleCare+ by entering your iPhone serial number.
See Apple iPhone service pricing and find out how to get repair service for your iPhone at Apple Support.
For tips, tricks and helpful information when you need it most, follow Apple Support on Twitter- @AppleSupport