The opposite is also true, that any phone Phone Number List can work with any SIM and it is not necessary to change the phone if you wish to change the SIM. Some providers lock their phones with programming to work only with the SIM issued by their service providers. If you can Phone Number List reverse that program, for the phone to work with any SIM, it will be called unlocking of the phone. Most of the service providers, offering a free phone along-with Phone Number List their services, lock the phone which you select. This means it can only work with a specific network. At times even the monthly pay mobiles are locked.
However, the mobile can be unlocked with a Phone Number List code that allows you to use another SIM card from a different network. You have the following options: 1. You can obtain the services of the phone network but usually they charge quite high. This will not be available till your term ends with the service provider. 2. You can use an online unlock service Phone Number List which is convenient and cheaper. 3. You can purchase a special unlocking clip or software. Once unlocked, you can use any network or service provider's utilities on your phone. There are Phone Number List numerous companies that provide a cheaper and easier process to unlock your mobile providing an unlock code.
However, there is a cliché here too. The unlock Phone Number List code you obtain from a company may be compatible to only one or two networks and others still remain inaccessible. And at other times they do not work at all and the provider companies take Phone Number List the plea that your mobile is not compatible to their code. And when you try an unlocking in house without trying for a provider there is always the risk of faulty Phone Number List operations and system crash.