I currently have the iPhone 4 and want to upgrade to the 5S, but would that require a change of plan?

Question

Im not sure if it would cause a 3G to 4G change?

Ann154 · Accepted Answer

The data plan is the whether or or not you have a 3G or 4G phone. However if you have the unlimited data plan and want to upgrade under contract, you will be required to change the data plan to a tiered data plan.