When you are in the market to buy an unlocked cell phone, it is a good idea to have a basic idea of what "locked" actually means. The term locked when used with mobile phones means that the phone is programmed internally to operate on a particular system. This is usually the system that sells you the phone and provides the service. There are also two kinds of cell phones. These are the GSM and the CDMA types of mobile phones. The GSM is the type of phone used almost everywhere in the world, but the CDMA is a bit more common in the United States. visit:-www.movical.net While it is possible to unlock a cell phone, many people prefer to buy unlocked cell phones. Any one who has watched television in the last couple of years is going to be aware of the tremendous competition between the various mobile phone service providers. These companies are most anxious to lock you into using their service and this is the purpose for locking them. When you own an unlocked phone, you are going to be able to select your own service, and use what is really your property in the way that you chose to use it. GSM phones are very easy to unlock, and the CDMA phones are a bit harder. In either case, buying an unlocked mobile phone might make a little more sense than buying a phone and then unlocking it later. eBay is one of the best sources for the purchase of unlocked mobile phones, but you need be a bit careful here. Some sellers on eBay do not fully understand the concept of locked or unlocked. This is not really an attempt at dishonesty. They are not necessarily tech types, and simply do not understand. The best solution is to send a question to the seller and make sure that they understand exactly what it is you are asking of them. Unlocked phones are also sold outside the United States and in some countries such as India; it is customary to unlock cell phones before selling them all the time. With the global internet market, this is a viable option for the purchase of an unlocked cell phone. Once again, the important issue to consider is making sure the seller understands exactly what you are looking to receive. Once you have your unlocked cell phones in your hands, it is an easy matter to determine if it is truly unlocked. All you need to do is try it out and it will tell you its status. If it is unlocked you are going to be able to use it to connect with whatever service you wish to use.