This only works up to 24 hours. If you’re timing something for more than 24 hours, I don’t want to know what you’re up to. Leave me out of it.
This trick comes straight from Google — there’s no need to install an app on your phone or tablet first.
Don’t steal the paper clips from work. Actually, do steal them. If you get fired for that, you needed a new job anyway.
Try this, and if it doesn’t work, restart your iPhone or iPad. If THAT doesn’t work, call an ambulance or the police.
Increase your phone’s maximum volume (and protect it from splashes at the same time).