A vast majority of us that have purchased iPhones have done so at a significantly subsidized price in exchange for signing a two year contract with a cell service provider. At first only AT&T had rights to provide service to the iPhone, but now all manner of providers large and small have joined in.
With this influx of competitors for your iPhone’s service an underground market developed: “unlocking”, or removing the barriers that keep your iPhone tied to a specific provider. Unlike jailbreaking, unlocking your iPhone isn’t against the wishes of Apple- only the provider that’s subsidizing the purchase price of your handset. While the contract you signed will keep you in their service (and there’s a hefty penalty awaiting you should you decide to break that contract) your handset remains ‘locked’ even after that contract expires.
Your cell provider may or may not unlock your iPhone after your contract has expired; your mileage will likely vary depending on the provider and possibly even the location you visit. If you’re tech savvy (and feeling brave) there are software solutions and tutorials so you can do the unlocking at home, although none that I’d endorse.
Apple may have given a virtual thumbed nose to the carriers with their latest handset, however. Reports have pointed out that Verizon‘s version of the iPhone 5 arrives unlocked and able to use GSM SIM cards right out of the box (Verizon’s CDMA-based service doesn’t require a SIM card). TUAW (The Unofficial Apple Weblog) revealed in a recent post that an unsubsidized iPhone 5 sold for AT&T’s service can easily be unlocked by restoring it in iTunes. Bear in mind, this iPhone 5 was sold full price and without a contract; no word if this trick will work on a handset that is still under contract.
Provided you honor the terms of your contract I see no reason for your iOS device to be tethered to a provider. If you’re one of the fortunate ones that can afford an iPhone full price, you should be able to shop around for the best possible price on your cell service- even carriers like T Mobile want you!
