When it comes to unlocking cell phones, you need to know whether or not it is CDMA or GSM. Most carriers in the United States — U.S. Cellular, Sprint and Verizon — use CDMA technology. T-Mobile and AT&T on the other hand use GSM technology. To keep things simple, if you want to unlock your phone, you must first identify what carrier the phone was originally used with. If it was with AT&T or T-Mobile, then you’ll need to go about the unlocking process keeping in mind that the phone operates off of GMS technology.
Here’s a quick look at the best and easiest phones to unlock over a GSM network.
Samsung Galaxy S5
Keep in mind that if you want to unlock your GSM phone, it will have to be used with a different carrier who also uses GSM technology. To unlock a Samsung S5, first remove the current SIM card and insert one from the carrier you want to switch to. Now, turn the phone back on. The phone will ask for an unlock code (SIM Network Unlock PIN). Enter the code that you purchased from a service provider. If it then asks for a Network Code, enter it as well. The phone should now be unlocked.
Samsung Galaxy Note 4
The Galaxy Note 4 is the flagship for Samsung when it comes to screen size and resolution. Fortunately, you can easily unlock your Samsung Galaxy Note 4 in as little as three steps. First, give the IMEI number of your phone to a service provider who sells unlock codes. To get this number, go to SETTINGS >> About device >> Status. Then, follow the directions given to you by the service provider and type in the unlock code when asked for it. That’s it; your phone should be unlocked.
For more information on unlocking a GSM phone, check out code4gsm today.