How much does an iPhone 4/4S cost per month?

My mom tried to tell me that it would cost at least $150/month to have an iPhone. That seems a bit extreme because so many people have them. I would definitely want unlimited texting but i don't care about minutes because I don't talk on the phone that much. I'm hoping to split the monthly cost with my parents. Could you please list the possible plan choices? I need a rough estimate of a total.

Depending where you're from and who your preferred carrier is. Various companies offer different plans.

I'm from Canada and I'm with Fido.
My monthly plan cost me only $80 a month.
That includes:
250 minutes (that I barely use)
Unlimited Text Messaging
Caller ID/Call Waiting/Call Conference/Call forwarding/
Visual VoiceMail
6GB of Data. (very useful)
Evenings free from 6PM-6AM - Weekends free

To be honest, assuming you're a student, $150 is really overboard. $50-$80 is more reasonable.

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