BBC investigates iPhone complaints
Some people whose iPhones have developed problems say they have been accused of damaging them and that Apple has refused to pay for repairs.
The Apple user guide states that if your phone has been damaged by water then it's not serviceable. But some people told the BBC's Watchdog programme that their broken phones had not suffered water damage.
Apple told Watchdog the following:
"If an iPhone has been damaged by liquid, the service or replacement is not covered by the Apple one year limited warranty or an AppleCare Protection Plan (APP). It would be eligible for Out Of Warranty Service. Currently, if a customer takes their iPhone to an Apple Retail Store, the warranty will only be void due to liquid damage if all indicators have been triggered."