I need to buy an IPhone.
I want it to check out the student experience of using online classes on a Smartphone. My day job is a Professor teaching teachers how to teach online, and the latest thing is students use mobiles for online classes.
Now, I will never use it as a phone, my Android works great, I just need to see what elearning looks like on IOS, from June to end of August 2017
So, I don't want to pay much, and it must be SIM-free. I don't know what level of IPhone I need, maybe IPhone4 if it is as dimensionally big as IPhone6.
Any advice?