Are you looking for a secure and easiest method to unlock your locked HTC One M7 ? There are lot of websites and seller who offer confirmed unlocking for your HTC M7. If you are searching for Free unlock codes the let me tell you that's a myth and you cannot really get any code for free. But you can get the unlocking code in as cheap as $3.5. Locked smartphone doesn't allow you to use SIM of any other network provider. The companies like AT&T, Sprint and T mobile unlock the Phones after you complete your contract.
Why you should Unlock your HTC One?It saves your money and you can use it with any network provider of your choice. It increases resale value of your phone as unlocked phones have better value when you sell or exchange it. There are lot of ways to unlock your device.
The sellers will only need your imei numbers. Once your purchase the gig and send your IMEI number, seller will send you unlocking SIM code.