How to pay for an iphone upfront?

So I'm going to be getting my own phone and I want to get the iphone 6s plus. I think it's like 600 something dollars. I'm only 17 and I can't have a credit card yet, can I pay with cash?

Yeah, you can pay with cash. Do you have a debit card at all? It's not good to carry tons of cash with you so if you do pay cash, go directly to the store, make your payment, and yeah. Also don't pay with a lot of singles or pennies.

No I don't have a debit card. This will be my first job so my mom doesn't really let me have anything. She's on of those overprotective parents. She wants to do everything for me.

Yes you can

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