The release date for the new iPhone is fast approaching. Current owners of iPhones are in a dilemma - whether to make arrangements to sell their iPhones in order to buy the new one or to retain it with a wait and watch strategy. It can sometimes be a gamble to sell the old phones for the new without any user reviews.

iPhone fans have rarely been disappointed with the performance of a newer version but to those who are still undecided - this should help them make decision. According to reports from Zdnet, selling of your old iPhone now can mean an additional $ 72 in your pockets.

It is an established trend now that with the launch of a new iPhone the prices of the older versions drop by about 20% in a matter of days. So the amount of cash also depends on the price and model of the iPhone.

The iPhone 5, for instance, being a more recent version and valued more, can give the owner $ 72 more today than 3 to 4 weeks after the launch. The prices are reported to drop gradually. A drop of about 5 % is expected within the first week, a 12 % drop in the second week and so on.

A iPhone4S owner can expect to make an additional $46 by selling now compared to after 3 or 4 weeks of launch and a Iphone 4 owner can expect $29.

Users can expect a sharper fall in the prices this time around because of the release of the rumored less expensive iPhone 5C. The "C" could stand for colors as the new smartphone is expected to come in vibrant different colors. The body of the phone is expected to be in plastic allowing Apple to place a smaller price tag on the phone.

There are plenty of good features in the coming iPhones to be excited about, but to those who have the iPhone 5 can consider holding on to their iPhones. Click here to find out why you should keep your iPhone 5.