Apple have launched the iOS 10 update, but for a lot of iPhone owners, the whole thing has caused nothing but problems.
Many took to the various social media channels to complain about installation problems, while some people say that the whole thing has bricked their phones, which is hugely irritating.
Apple says that the initial problems should be a thing of the past, and they've ironed out all the bugs, so if you've not downloaded the update yet, Apple say it is safe to do so.
However, Apple presumably thought it was safe when they launched it, so if you want to hold off for a few days, that's understandable.
Of course, Apple have had these problems before - the iOS 9.3.2 update, when it first came out, bricked the 9.7-inch iPad Pro.
However, there are ways to fix it yourself, if everything goes the way of the pear.
HOW TO FIX IPHONE FROM iOS 10 UPDATE PROBLEMS
You might have to use the recovery mode to restore your handset. If the progress bar for the update isn't going anywhere, Apple have some advice about that, which you can see here.
How To Put Your Device Into Recovery Mode:
Make sure that you're using the newest version of iTunes, which you can find here.
If iTunes is already open, close it, then connect your device to a computer and open iTunes. If you don't have a computer to connect it to, you'll have to borrow one from a pal, or get down to an Apple store where they'll do it for you.
While connected, do a force restart - that's when you press and hold both the Sleep/Wake and Home button for at least 10 seconds. Don't release it when you see the Apple logo on your phone - you have to keep pressing until you see the recovery mode screen.
When you get there, you'll see the option to either Restore or Update. Press update.
From there, iTunes will try to reinstall iOS without erasing your data.
If your device leaves recovery mode, just repeat the above steps and choose Restore instead of Update.
When that's done, set up your device and restore everything from when you've backed up your phone with iTunes or iCloud. As an Apple user, you should be backing up your phone pretty frequently, because these problems keep cropping up, and the thing that annoys people the most, is that they lose all their photos and the like.
Get in touch with Apple Support if this isn't working for you.