This article has free HTC S620 SIM unlock instructions and shows how to get a free unlock code for your HTC 620. By removing the SIM lock on your HTC 620 you can use this cell phone with any phone carrier or network you desire! It is required that you have an unlock code for your phone for these instructions to work. However, it is possible to attain a free HTC S620 unlock code. First, try calling up your phone carrier’s support line and requesting one. I have heard of people having success with both AT&T and T-Mobile as long as they had service for at least 3 or 6 months. Additionally, you can try searching Google for some free unlocking software. If you still cannot find a free unlock code it may just be worth it to pay for an unlock code, as it beats out paying for a pre unlocked S620 phone.
Once you have your HTC S620′s unlocking code you can use these steps to unlock it. Here they are:
1. Power on your HTC S620 with an unaccepted SIM card in (or no SIM card at all).
2. Enter your HTC unlock code you attained earlier.
3. Your HTC S620 should be unlocked and may automatically reboot!
If you wish to learn more about the HTC S620, check out these specifications here.