Apple announced iPhone 4 on 24th June 2010 with the new upgraded OS iOS 4 with several features. The other old 3G and 3GS phones can also be upgraded to iOS 4.

Unlocking Necessary for iPhone?

If you are using the iPhone on a contract then it does not need an unlock. But, for those who needs to use it on other networks and other countries after buying a iPhone in US, UK etc it necessary to unlock. Unlocking it will work on any SIM card worldwide.

Now unlock iPhone 3G, 3GS and 4 to run iOS 4 and get all the features enabled .

New features that will be available after unlocking the phone

· It will work on all the mobile networks.

· External third-party apps could be installed easily.

· Features like tethering and Multitasking will be available for all versions of phones.

· Install more third-party Themes.

Keep these in mind before using softwares to unlock.

· Reliable and safe so that it does not damage your phone.

· Enable all the available features and functions on the phone as it was before unlocking.

· Simple and should take less time to unlock.

· Unlock software must support both MAC and Windows based PCs.

· It must unlock all iPhone 3G/3GS and 4 in all the baseband.

· It must support future OS upgrades from Apple after unlocking.

Advantages of using Paid softwares to Unlock.

· It is simple to unlock without involving any steps.

· It supports all versions of phones and works on all networks.

· If you have any problem with the phone the support team will resolve it immediately.

· It is free of ads and other promotional stuffs.

· It does not steal any passwords or any of your information.

· Since it is already tested on most of the SIM card in different countries and you can get your money back if it does not work.

· All the features works after unlocking.

Disadvantages of using free softwares to Unlock.

· It involves complex and lengthy steps and it is time-consuming.

· If any of the steps go wrong then there are chances that the phone may stop working again completely.

· It is not tested on all networks so it is not guaranteed that it will work on all countries and all networks.

· Some features may stop working.

· The software leaves a lot of ads and the software logo on the phone.

· They could slow the phone and also steal some personal information and passwords.

Conclusion
It is clear that paid softwares stands out when compared to the free ones . Also choose the correct paid software to Unlock your iPhone and be assured that you phone is problem free.