An Samsung Omnia 7 unlocked phone generally works on all GSM networks. A Samsung Omnia 7 that is locked to a single phone carrier and uses a SIM card will need an unlock code in order to remove the SIM lock that comes on most SIM devices by default. If your Samsung Omnia 7 has a SIM lock on it, then it will prevent you from using the mobile phone with any other carriers.
I would first recommend you try getting a Samsung Omnia 7 unlock code by calling up your current phone carrier. In exchange, they will need your Samsung Omnia 7′s IMEI number. Your IMEI number is unique to your mobile device and the Samsung unlock code will be calculated using it. You can get the IMEI number on your Samsung Omnia 7 simply by typing *#06# and hitting the enter or send button. If you do not currently have a carrier or cannot get a free unlock code, then I would reccomend trying some of the unlock code websites that I have reviewed below.
Once you have your unlock code, you can begin the Samsung Omnia 7 unlocking steps below.
How To Unlock A Samsung Omnia 7 (SIM Unlock)
1. Power on your Samsung mobile phone with an unaccepted SIM card inserted.
2. Your Samsung mobile will prompt you for a password (unlock code).
3. Enter your Samsung unlock code.
Otherwise, if your Samsung mobile phone displays “Insert Correct SIM Card” then:
1. Turn on your Samsung phone with no SIM card inserted.
2. Type: #7465625*638*CODE# (Where CODE is your Samsung unlock code.)
The Samsung Omnia 7 is another new smartphone to use the Windows Phone 7 operating system and is well worth unlocking and may in some cases come already unlocked. If you have any questions or advice on unlocking your Omnia 7, feel free to post them below. Thanks!