The iPhone 3GS has a specialty that despite a number of reviews managed to stay secret until now. No one was talking or has talked about the Oleophobic Coating on its touchscreen that makes the 3GS resistive against fingerprints which include even the oily ones. The common belief was that the overheating concerns has made Apple advisory specify a temperature parameter but it now turns out that the Oleophobic Coating was why a temperature specifications was made public. Under extreme heat conditions that Oleophobic coating on the screen could potentially wear off and as a consequence Apple wisely issued a warning. Cleaning the Oleophobic coating isn’t a major fuss as you can simply wipe off the oil with a lint-free cloth.
Via: Salaswildthoughts
