How much is the iPhone 4 S monthly?

It would depend on what company and data plan you go with.

Verizon @janbb

@sydneymatilda,
Welcome to Fluther! I have a iPhone 4s, when I was carrying just one phone on my plan, it was right around $70 a month- on AT&T, but shouldn’t it be about the same?

Iphone 4S 16Gb $99 upfront for the phone then between $40 and $150 a month depending on how much data you want. Probably the $50 for 1Gb or $60 for 2Gb are the best option to go for if you are the only user as the more expensive options are designed for multiple users to share the data. (Verizon Website)
For $299 upfront you can have the 64 Gb version.

If you go to Apple’s site you can go into the iPhone Tab and compare various plans for all three major providers, all on one page!

To answer your OP. I pay 30$ a month. 300 Mins, Unlimited Data & Text. 3G only. Virgin Mobile iPhone 4s user.

I’ve got AT&T & I have an unlimited everything under the sun plan with a military discount. My bill is about 104 per month. My discount is around 15% I think so without that you can calculate the increase as needed.