Differences between unlocked GSM and CDMA phones

This topic is important when it comes to unlocking a GSM or CDMA phone because they don’t both work in the same way. It is because of the differences between them in regards to the hardware they use to connect to a network (SIM card versus no SIM card).


In simple terms, GSM handsets use what is known as a Subscriber Identity Module (SIM) card. The more popular of the two technologies, GSM phones are found in most markets worldwide. This is largely because of the fact that GSM technology was the first of the two and when mobile phones started becoming popular in the late 1990’s, they offered better signal coverage. GSM networks are currently the only type of network used in the US and many other countries.
The SIM card itself is usually extremely accessible for the phone’s owner as well, usually placed under the phones battery. It can be removed and replaced easily, allowing owners to switch between networks without a problem (if the phone is unlock – which you can do through us if your GSM handset still needs unlocking).
CDMA handsets don’t use a SIM card. Instead they connect to a network because that networks details are programmed into the handset itself. Therefore, when the phone is switched on, it automatically connects to the network whose details are embedded inside. Some of the most popular CDMA carriers (networks) are based in the US and include Verizon and Sprint. These can be a lot tricker to unlock, so we’ll run through how that’s done below.
For more information or to unlock your phone please visit www.iTechUnlimited.com