There may be many reason that you have locked device. You may have got from your friends, family or from local market few months back and after using it few month, Your iPhone may have suddenly locked due to updating or restoring software. You may have received as a gift by someone but it is not activating using your local sim card. Your iPhone might showing you invalid SIM card , SIM card not valid, SIM Failure etc using other SIMm card then your carrier. This happens with everyone and almost everytime who are using it with some patch, jailbreak or turbo or gevey sim card. No wonder you will first look for cheap or free solution but in all case happened after release of iOS 5.0 in May,7 2012 - it became impossible to run with free solutions like jailbreak etc.
Forget about following options for free unlock
•Jailbreak : Unlocking iPhone using jailbreak was only good before may 2012 on iPhone (Original 2G), iPhone 3G, iPhone 3Gs. If you are looking for iPhone 4, 4s or iPhone 5 unlock with jailbreak - Do not waste your time anywhere, Nothing will work for you.
• Gevey / Turbo SIM : Mr. Sam from iUnlockStore.com has said "I do not understand why people prefer Gevey, turbo sim solution. 95% people lost their money on turbo sim card, they get network but people can not call you neither you get any stable signal. Moreover, your freedom to use internet, facetime, iMessage is lost with gevey sim card. And ask someone who have used it... they waste several hours for network when they lost signal. It's completely insane to use gevey sim card for iPhone, you should prefer any android before doing that :)
• Site that sale jailbreak: There are many websites who claim that they can unlock any iPhone lifetime without asking you serial number or IMEI number. They sale One unlock $24.99 approx and unlimited unlock $49.99 etc. In real world, iPhone is only can unlocked lifetime using Official iPhone Unlock Method . Read more...
Why Officially unlock your iPhone?
1) It is not free but after paying some charges to Genuine Unlock Service Your iPhone will be officially white listed on Apple server. That means No payment every-time you update, it will work life time.
2) Don't worry about your current situation. You may have unsupported baseband for jailbreak unlock, you may have latest iOS that is not activating with your sim card. Official iPhone Unlock will enable your iPhone to use with latest iOS and it is promised by Apple that it will remain Unlocked lifetime.
3) Every iPhone has their own carrier and condition. Different carriers life AT&T USA, Verizon USA, Telus Canada, Rogers Canda, Tmobile UK, Orange UK, O2 UK or Vodafone UK have blacklisted some IMEIs due to unpaid amount from original customers, lost iPhone, stolen iPhone etc. We confirmed that iUnlockStore team supports every unlock orders and they will unlock without any hesitation. Still you are covered with Money-back Guarantee.
How to Unlock iPhone ?
 Know your iPhone's carrier & country. (for example: AT&T USA) If you don't know carrier & country information, Click iPhone Carrier Check By IMEI
 Find your iPhone country list on http://www.iUnlockStore.com
 Confirm unlock duration & price and submit your order.
After complete order, Wait for confirmation email in mentioned time frame about your unlocking. Once you receive successfully unlocked confirmation from iUnlockStore.com - You just require to insert any sim card on your iPhone and update it to latest iOS version using iTunes software on computer/mac. You will be notified by iTunes "Congratulations!
On every failed orders, Team at iUnlockStore will automatically contact you and refund you with reason why it was not unlocked. This is so far most exciting service available on internet and you should try them before risking your money anywhere on internet.
Mr.Sam at iUnlockStore said "Our primary focus is to aware customer about safe iPhone unlock. We run several campaigns to aware people about our service and so far thousands of customer referred their friends, family to use our service. We are still adding more and more carriers for official unlock but it is on process. We are clear about refund but still many people are not aware and generally choose other site where they sale fake service and loose their money. www.iUnlockStore.com will announce a list for scam unlocking website very soon to help iPhone users from getting scammed"
Visit this link for iPhone factory unlock
Some features that you should know about unlocking iPhone from iUnlockStore.com only.
• Works on IMEI method, Lifetime unlock even after update
• Any iOS, Any baseband supported (future version, too!)
• Jailbreak is not required
• No warranty damage, you still can apply for warranty on issues
• Unlock iPhone 4, iPhone 4s, iPhone 5 and iPad and all upcoming models
Note: iUnlockStore.com is a dedicated unlock company running by professionals and their identity is not declared due to safety reason. They handles everyday more than 500 iPhone unlocking and so far known world's most successful iPhone unlock company.
This is individual article from Webilogy and published by iUnlockStore.com to help iPhone users.
A simple video on how to order for unlock: http://youtu.be/