Q: iPhone 5s stuck while updating to iOS 10

Greetings, andreiiii.

Thanks so much for reaching out in Apple Support Communities. I see that your iPhone is stuck on the loading screen but the bar seems to have completed. I'll be more than glad to help

1. Apple logo with progress bar after updating or restoring iPhone, iPad, or iPod touch -- Try some of the suggestions here.

2. Restart your iPhone, iPad, or iPod touch -- Try the restart first and if that hasn't helped, try the forced restart in this article.

3. If you can‘t update or restore your iPhone, iPad, or iPod touch -- If the previous steps didn't complete your iPhone's update, follow the direction contained in this article.

Cheers!