What is a IMEILock

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SIM lock:

A sim lock, Network Lock, carrier lock, imei-lock or (master) subsidy lock serves as a technical limitation built into CDMA and GSM phones by manufacturers to be used by carrier networks to limit the use of these phones to particular locations and/or networks. This is contrary to a phone (retrospectively called SIM-free or unlocked) which doesn't enforce any SIM restrictions.

Almost all cell phones can be unlocked to operate with any GSM mobile phone network provider, however phone can still show the original logos and may not support popular features of the new service provider. Besides the locking, phones might also have firmware placed on them which is specific to the network provider. This firmware is installed through the service provider and is separate from the locking mechanism. The majority handsets can be unbranded by re-flashing another type of firmware type, a procedure suitable for advanced users only.

Unlocking Technology:

Normally, a locked phone will display a message if a restricted SIM is used, asking for the unlock code. On recent phone models running Android mobile phone software, the smartphone should show a message stating “SIM network unlock PIN” or “Enter Network Lock Control Key” if it is network locked. Windows phones will show the message, “This SIM card can only be used on specific networks. Contact your customer service center for the unlock code”. Several other handsets might show alternative messages for example , "Enter special code" or "Enter unlocking code," or in some circumstances the device will probably present a message stating it's locked. Right after a valid code is keyed in, the mobile phone will display "Network unlocked” or “Network unlock successful”.


Mobile handset suppliers have monetary incentives both to strengthen SIM lock security (which placates network companies and will allow exclusivity offers) and weaken it (expanding a smartphone's overall appeal to buyers who typically are not interested in the service provider that offers it). In addition, making it too difficult to unlock a smartphone could possibly make it significantly less desirable to network service providers that have a legal responsibility to offer unlock codes for certain handsets or in specific countries.

Unlocking Services:

Lots of businesses provide a unlocking service . This service calls for people who need to unlock a mobile phone to supply their IMEI number to a service supplier and quite often they will also ask for the country and cellular network the phone is locked to, often sent via email or entered on their web site. The organization then will supply (for a fee) a unlock code for the handset.

Unlocking Service Providers:

Regrettably there are lots of scammers on line retailers working in the cellphone imei unlocking industry. As a consequence it pays off to be sure you use a trustworthy service provider for this service. Take the necessary precautions and investigate all potential suppliers before choosing to submitting an order. In the case of on-line suppliers, ensure they publish their registered company name and matching registration information (every legit business must be legally registered with all the official authorities in their country of origin) and make certain they give a genuine listed address and contact details on their web site. Additionally make certain that any payments made are done so through legitimate methods for instance a recognized bank or financial institution using a debt or credit card, but never make payment via a direct transfer since this offers no fiancial safeguards. To assist with a search for a legitimate company, we've provided a listing just below (and in no specific order) of a few legit organisations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: