Huge iPhone update is about to arrive – but NOT if you have one of these models Charlotte Edwards, Digital Technology and Science Reporter 12:59, 13 Jul 2021 Updated: 12:59, 13 Jul 2021 IF YOU have an iPhone that's older than the iPhone X you'll miss out on some of the new iOS 15 features. Apple announced the new software back in June but it won't be coming out until Autumn time. 1 The older your iPhone, the less iOS 15 features it can accessCredit: Getty The iOS 15 software is only compatible with the iPhone 6S and later but if your iPhone doesn't have a A12 processor you also won't be able to access certain features.