It depends on the data plan you get and also your provider. I have an iPhone through Verizon and it costs me about $47.50/mo, but that's with the plan I'm on. I'm considered an extra line on my parents' plan, so that part costs me only $10. I get 2GB of data per mo at $30 and I split the unlimited texting bill with my parents and sister, so that only costs me about $7.50 a mo. But like I said, it typically depends on what your provider offers and all.