Apple is expected to unveil its latest smartphone next month on September 12. And though the handset won’t launch until the 21st, pre-orders for the device are said to begin the same day.

For those of you who plan on selling your old iPhone to help pay for the new one, that gives you around three weeks to do so. But according to resell data, you may not want to wait that long…

The above chart was constructed by NextWorth, a gadget reseller, and takes a look at the average selling prices for the iPhone 4, 3GS and 3G leading up to the unveiling of the iPhone 4S last year.

As you can see, the prices peaked around August, and sharply declined through October. This was caused by the shear number of handsets that became available through resell channels at that time.

So if you’re going to sell your iPhone on eBay, now is the time to do so — you’ll get top dollar for it. And for those that need to keep the device until the new one arrives, there are a few other options.

Gazelle, for example, another gadget reseller, is offering to lock in current iPhone 4S pricing through October 1st. This means that you won’t be affected if resell prices plummet in September.

That being said, Gazelle doesn’t typically offer top tier pricing for gadgets. As of now, the going rate for a 16GB 4S in good condition is just $277, well below the $360 average we found on eBay.

The bottom line here, if you haven’t gathered it already, is that the longer you wait to sell your handset, the less money you’re going to get for of it. And when you do get ready to sell it, be sure to check out our pre-sale guide.

[CNET]

  • But this is my only iPhone :(((

    • Dan

      Same here, I gotta wait till I have the new one in my hands to be able to sell mine. To top it off, I’m not even sure I will get the new iPhone. Might go for the Galaxy S3 if iPhone disapoints.

      • I told myself, if the screen is bigger vertically I am out. If the 30-pin dock connector is out, I’m out. I spent way too much on accessories for my car and home.

      • Ronald Weaver

        they should have some adaptors for the doc connector

      • yes they will be available with the other accessories predicted

      • 1337lolzorz

        Seeya

      • Thorasgard

        I am sure apple will have an adapter that will cost only $5 less than buying a new connector.

      • SoCoMagNuM

        GS3 is a decent phone but stock its still not as stable as the previous iPhone 4. I was gonna wait for the iPhone 5 but I took a leap of faith and got into the Android market. I actually was gonna get the 4S back when it launched last year and sell my iPhone 4 (at that time going rate was $350) i could have sold it on ebay and made a $100 profit upgrading to 4S but after i seen that much really didnt change from the 4 to 4S (in my opinion) i held off to see the next gen iPhone was gonna be (iPhone 5). but as previously stated…i went Galaxy 3. Im still curious to see how the iPhone 5 turns out.

    • Ha! I took the wifes, swaped sims and unlocked mine. 🙂 on eBay as we speak.

  • I have a 3GS 😀

  • Ronald Weaver

    What kinda price range would be fair for a black 32gig iPhone4 GSM ATT&T? I have the backlit apple back panel and and a few accessories. I was hoping to get around $300 for it. Sound about right?

    • Be lucky to get $200 or so.

    • 270 should be fine on cl

      • Ronald Weaver

        Cool i have a White 32gig 4s that I’m gonna keep in the mean time. I was hoping the backlit panel would raise the value. If it don’t i will keep it. I still have the original.

      • SoCoMagNuM

        i would go ebay route.

  • the time is ripe when untethered jailbreak is available and tweaks are updated on your new iPhone.

  • macboy74

    LOL I sold mine last week along with 5 iPods and got $539 store credit at GameStop. I am now using my old LG 3g flip phone from 2004. I have used it for the past 4 years when I sold my iPhone a month before the new one is released. Dam it sucks texting on this thing. Good thing its only for a few more weeks.

    • SoCoMagNuM

      gamestop is a ripoff when it comes to trade-ins…even iDevices. you could have made way more on ebay auctions. i sold my non-functional (didnt boot, reboot, restore, nothing but hang in restoration mode and error codes) iphone 4 on ebay and a guy bought it for $168. that was 1 month ago.

      • macboy74

        I got $539 for a iPhone 4, a 3rd gen nano that was broke and didn’t turn on and was beat up. One iPod video which didn’t hold a charge and only worked when plugged in. A 3rd gen iPod touch that was beat up. And a 4th gen that was scratched up and the headphone jack didn’t work. The only one I could’ve sold on ebay was the phone that was mint. So GameStop was far from a ripoff considering what I had.

  • How much is for 2 yrs old i4 16gb factory unlocked?

  • iphone 4Ss still going for $450 on craiglist …llol wow damn iPhones are hot.. and this goes to show how many folks are desperate to get them and willing tko pay handsomely for used ones

  • iphonesintocash

    A lot of people are selling their old iPhones now when the new ones come out or the old one breaks. The best time to do it though is before the new one comes out.