Joke Collection Website - Blessing messages - What should I do if my iphone4 is too stuck after upgrading to ios9?

What should I do if my iphone4 is too stuck after upgrading to ios9?

It is suggested to turn off background application refresh, turn off location service and turn on enhanced contrast.

And the previous one. Although you can only upgrade to iOS7. 1.2 at most, you can upgrade the system with a computer, but the hardware is poor and it may be slow to use.