I want to do it before iOS 10 launches and it becomes impossible to use 9. But I'm skeptical given the low-config nature of 5C.
Are there any known performance degradation in 5C if iOS is upgraded to 9 from 8? So far it is working good with 8 and I don't wanna ruin it. The usage is very basic, I have bought it for my Mom.
And, is it really necessary to upgrade? I mean, is it possible that some apps might not work in future because I have not upgraded?
Thanks in advance.