During the iOS 27 update, some users reported their iPhones running warmer than usual. Apple has acknowledged this as a normal occurrence, citing its official operating temperature range of 0 to 35 degrees Celsius. The company’s support page lists software updates, especially major releases, as a common cause of increased heat. This aligns with user experiences following the latest update. The warmth is considered part of the device’s normal operation. Users are advised to ensure proper ventilation and avoid overloading the device during updates. No significant issues have been reported beyond the expected temperature rise.