What is a CARRIER LOCK

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SIM lock:

A sim lock, network lock, carrier-lock, IMEI-Lock or (Master) subsidy lock is actually a technical limit built into GSM and CDMA cellular phones by manufacturers for use by service providers to restrict the usage of these phones to specific countries and/or networks. This is unlike a mobile phone (retrospectively called SIM-free or unlocked) that does not enforce any SIM limitations.Unlocking a cell phone is almost universally legal. At the same time, it is legal for carriers to force SIM locks for certain periods of time, varying by region.


Unlocking Technology:

Typically, a locked mobile will show a message if a restricted SIM is used, asking for the unlock code. On the latest phone models running Google android software, the smartphone should display a message stating “SIM network unlock PIN” or “Enter Network Lock Control Key” if it's network locked. Windows phones will display the message, “This SIM card can only be used on specific networks. Contact your customer service center for the unlock code”. Other models may possibly show different messages for instance , "Enter special code" or "Enter unlocking code," or in some cases the handset will simply show a message saying that it is locked. Once a valid code is keyed in, the handset will display "Network unlocked” or “Network unlock successful”.


Economics:

The main reason to unlock a mobile phone handset is going to be able to use it with another SIM card. Users may want to carry on using their mobile phone but with a different service provider or if traveling overseas they might want to connect to a foreign network with a prepay subscription.


Unlocking Services:

A number of companies provide a network mobile phone unlocking service . This service needs those people whom want to unlock a mobile phone handset to supply their IMEI number to a service supplier and quite often they will also ask for the country and cellular network the mobile phone handset is locked to, sometimes sent through email or submitted on their web-site. The organization then will provide (for a fee) an unlock code for the mobile. For many manufacturers for example Nokia and Samsung a variety of services additionally offer special remote-unlocking software with directions, when a cable is needed to remove the SIM lock from home. Such vendors may email the unlocking code or software which will remotely unlock the device. The price for unlocking a telephone may fluctuate dependent upon the mobile phone network it is locked to and the device model itself, as every unlock code is unique to each unique handset.


Unlocking Service Providers:

Regrettably there are a great deal of dodgy sites working in the smart phone imei unlocking industry. As a consequence it pays to be certain you use a reputable service provider for these services. To assist with a search for a trustworthy service provider, we have supplied an inventory below (and in no specific order) of several legit organizations currently offering such services.


Reputable Mobile Phone IMEI Unlocking Service Providers: