The iPhone 4G is locked when you originally purchase it. Locked means the phone can only be used to call another contact by using a specific network. For example, American consumers are forced to use the AT & T network while European users must use the T-Mobile phone network. Buyers already promised to use the standard network for 2 years when they first purchased the iPhone.

You will not be able to use other types of network such as simcard unless you unlock it. The iPhone is purposely locked by Apple so that the users cannot receive signal from other phone carriers.  Because the iPhone can only receive signal from the standard network, it is impossible to call another person by using other network. If you want use other types of networks, you must have your iPhone 4G unlocked.

By unlocking iPhone, you can use local simcards to make phone call. The local simcard is much cheaper. People who make a lot of phone calls should unlock their iPhone so that they can save more money. It is more worthwhile to use a simcard to make phone call rather than using the standard network. Both the standard telephone network and simcard offers high quality phone call. If you unlock iPhone 4G, you can use multiple phone numbers. Locked iPhone only allow you to use one phone number. When you unlock iPhone, all the features and functions will still be accessible. Besides, you won’t be restricted to using the ringtones from the iTunes store. You can download songs from other sites and make your own ring tune. In addition, you will have the freedom of installing third party app on your iPhone.

Novice should not attempt to unlock the iPhone themselves. If you don’t know the procedure in unlocking your iPhone, you may possibly damage the system. Once your system is damaged, you won’t be able to use it to perform task anymore. To prevent this from happening, it is recommended that you use a commercial unlock iPhone service.

There are many websites that offer iPhone unlock service. Most websites will require you to download software to unlock the iPhone. Some websites offer bonus such as free access to a membership area where you can download movies, music, games and app. The membership sites frequently update the database so that you will have a wide variety of choices. If you cannot find an app, you can always email the customer service. The customer service will be glad to add the app for you. It is easy to download the games and apps to your iPhone.  It takes a minimal time to install the games and apps on your iPhone. It is best to purchase an iPhone unlocking solution with free life access membership so that you can take advantage of the free downloads.

Recently, the iPhone Firmware 3.1.2 was released. The iPhone Firmware 3.1.2 had relocked many iPhones that used to be unlocked by a software solution. When shopping for an iPhone unlock solution, make sure it will work smoothly with the iPhone Firmware 3.1.2.