iPhone 4s growing long in the tooth-how's my reasoning?

[rgG]

Also look at Cricket which is owned by ATT and has much better rates for the same towers and service.

https://www.cricketwireless.com/cell-phone-plans

You can get 2.5GB of data for $35/month with auto pay.
You can get a 5S for $199 from them or buy a good used one for less and bring your own phone.