My iPhone 6s froze after I upload newest update (I believe ios 10?). Plugged my phone into computer and clicked to update. I left the phone to upload for a couple hours and returned to see the black screen with white apple logo, and also see that thin upload bar, which seems to have gone across the phone — looks like the upload should be finished. But the phone is frozen. What should I do? Please help!
–A user from Apple Communities
Every time a fresh iOS version pops up, it keeps reminding you to update, so does iOS 10. However, it is also common that iPhone easily gets frozen after iOS 10 update. Is there any way to fix iPhone 7 (Plus)/SE/6s (Plus)/6 (Plus)/5s/5/4s/4 freezes after update? Here I would like to introduce you the way that really fixes it. Go on and get the answer!
Way 1. Hard Reset Your iPhone
Way 2. Fix iPhone Freezing with iCareFone
Way1. Hard Reset Your iPhone
To know how to hard reset your iPhone and get it restarted would be really helpful if you want to handle the common iOS stuck problem by yourself. It is easy, fast and simple to learn; also you can recommend it to your friends.
Keep pressing the Home and the Power button at the same time until you see the Apple logo appears again. Then release these two buttons and your iPhone would boot up successfully and work in normal situation. Try it!

Way2. Fix iPhone Freezing with iCareFone
If unluckily the method above still cannot meet your demands, or you want a tool to have all-rounded protection and optimization to your iPhone, then you are highly recommended to try on this toolkit—Tenorshare iCareFone! It fixes iPhone stuck during/after iOS 10/8.1/8/7 upgrade, restore or jailbreak. Also you can fix iPhone stuck in recovery mode/DFU mode/iTunes screen/Apple logo, etc. With its strong utility and features, it is really worthwhile to have a try.
Step1. Download iCareFone (Free) and launch it, then connect your iPhone with PC with a USB cable. Go to “Fix iOS Stuck”.

Step2. Then click the button “Enter Recovery Mode”, and you can see your device display the classic USB and iTunes logo, meaning that you’ve get into recovery mode successfully yet.

Step3. Then click on the button “Exit Recovery Mode”. Your iPhone will reboot automatically and revive.

Here are two ways I recommend to fix iPhone frozen during/after iOS update. For more, you can refer to the website of Tenorshare, where you can find many useful tips and tricks for your iPhone daily use.