Well, according to tech-savvy iPhone users, there is a hidden button on the phone's Calculator app that does all the work for you - and it's bound to save you loads of time whenever you're soaking up the sun abroad.
Sharing the game-changer of a hack, one woman, Mia Khan, took to TikTok where she explained what iPhone users should do next time they're jetting off on a holiday.
As reported by CNET, when Apple released iOS 18 in September last year, that update brought a lot of new features to your iPhone, like the ability to customize your home screen and hide and lock certain apps.
Some social media users noted that their iPhone Calculator didn't have the special button - however, after others advised them to update their device, it appeared.
This covers a whole range of things - from a tablet to watch films or play games if you've got older kids, to books and colouring.
