How much should I save per month for the iPhone 5s?

I really want the iPhone 5S. I made an agreement with my parents that I would pay half for the phone which is $225 how much should I save per month for the iPhone 5s before May?

So, you're saying you flunked 4th grad math? I you can't figure this out on your own, you don't deserve to get a new phone.

37.50. Round it up to $50 and get yourself an otter box

-100,000,000,000

If they're paying half ($225), then you will have to pay the same amount.

Simple math: There are five months before May starts. Therefore, 225/5 = $45 a month, or $1.50 a day.