There is such a thing as locked cell phone and it happens because phone network providers device that mechanism against their competitors.
There are two major communication systems used for mobile phones: CDMA and GSM. CDMA is a coded response system that ties a phone and its user together to a particular system and to a particular number. CDMA is more popular system in the United States.
GSM, which stands for Global System for Mobile Communication, is the common standard in more than 200 other countries around the World and is becoming popular also in the United States. GSM cell phone uses a SIM card to communicate with a particular network. The network provider has the option to lock the phone so that it will not respond to a SIM card from an alternate provider.
Network providers do this obviously for competitive purposes, but many users complained about this seemingly unfair practice. When an individual purchases the cell phone, he should have the freedom to change the SIM card and use the unit on any network that he prefers. This provides him the power to also use the same phone if he travels, especially in other countries without paying expensive roaming charges.
Unlocking a cell phone is not impossible but sometimes the task at hand is too daunting to do. And why bother with all the hassle when there are a lot of available unlocked cell phones in the market? Good thing that it includes the favorite Blackberry Pearl units.
If you are still in the process of buying a Blackberry Pearl cell phone, prevention is certainly better than cure. What is even so irresistible about it is that you can buy an unlocked Blackberry Pearl phone at a much discounted price.
The hard truth of the mobile phone business is that there is tremendous competition between various phone service providers. Hence, phone companies are most likely to lock you into using their service. When you own an unlocked Blackberry Pearl phone, you have the capability to choose your own service, the stuff you need and the stuff that you just want.
Compared to CDMA phones, GSM phones are easier to unlock. But then again, in either case, buying an unlocked Blackberry Pearl phone is more sensible than purchasing a phone and then going through the problem of unlocking it later. So to make the equation much simpler: buying unlocked Blackberry Pearl phones is the only way. But before you take out cash from your pocket, ask the seller and make sure that they truly understand what it is you are asking of them about Blackberry Pearl.
Once you have your unlocked Blackberry Pearl, it is an easy matter already to determine if it is truly unlocked. All you need to do is try it out and the Blackberry Pearl phone will tell you its status. If it is unlocked you will be able to use the Blackberry Pearl to connect with whatever service you wish to use.