Anyone with an iPhone in their pocket should check that it's updated and running the very latest version of Apple's iOS operating system. It's an important piece of advice with those who haven't - or simply can't upgrade their phones - set to lose some key functionality next month.
According to one top tech tipster, Apple is planning to block some older devices, running ageing iOS software, from using services such as the App Store, Siri, and Maps.
"As of early May, access to Apple services, with the exception of iCloud, will stop working on devices running iOS 11-11.2.6," the @StellaFudge Twitter account revealed.