What is a IMEI LOCK

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SIM lock:

A SIM lock, NETWORK-LOCK, carrier lock, IMEI LOCK or (master) subsidy lock is really a technical restriction built into GSM and CDMA cell phones by producers for use by carriers to restrict using these phones to a particular locations and/or networks. This is in comparison with a cell phone (retrospectively called SIM-free or unlocked) that does not enforce any SIM limitations.Unlocking a phone is nearly universally legal. In addition, it is often legal for service providers to force SIM locks for certain time periods, varying by area.

Unlocking Technology:

Typically, a locked smartphone will display a message if a restricted SIM is used, requesting the unlock code. On new phone models running Android operating system software, the smartphone should show a message saying “SIM network unlock PIN” or “Enter Network Lock Control Key” if it is 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”. Several other handsets could display a variety of messages like "Enter special code" or "Enter unlocking code," or in some circumstances the mobile will probably display a message stating it's locked. The minute a valid code is entered, the phone will display "Network unlocked” or “Network unlock successful”.


Mobile handset producers have economic incentives both to strengthen SIM lock security (which placates service providers and enables exclusivity offers) and to weaken it (expanding a mobile's appeal to consumers who aren't interested in the service provider that offers it). At the same time, making it too tough to unlock a smartphone might possibly make it much less desirable to mobile phone network service providers who have a legal liability to offer unlock codes for some handsets or in certain countries.

Unlocking Services:

Plenty of organizations provide a permanent mobile phone unlocking service . This service needs people who want to unlock a mobile phone handset to provide their IMEI number to a service supplier and in most cases they will also require the country and service provider the mobile is locked to, sometimes sent via email or submitted on their web site. The supplier will then supply (at a cost to you) an unlock code for the phone. For many manufacturers including Nokia and Samsung numerous services also offer special remote-unlocking software with guidance, when a cable is required to remove the SIM lock from home. Such suppliers may email the unlocking code or software that will remotely unlock the unit. The price for unlocking a cellular phone can fluctuate based upon the network it is locked to and the device model itself, as each unlock code is unique to each individual device.

Unlocking Service Providers:

Disappointingly there are lots of fraudulent organizations operating in the smartphone network unlocking industry. As a consequence it is advisable to ensure you use a genuine service provider for such a service. Take the necessary precautions and investigate all potential suppliers before committing to submitting an order. In the case of on line sellers, make certain they provide their formal company name and matching registration details (all legit organization should be lawfully registered with the official governing bodies for their country of origin) and ensure they supply a legitimate registered address and contact information on their web site. In addition ensure that any payments made are via legitimate sources for example a recognised bank or financial institution using a debt or credit card, but never ever make payment via a direct transfer as this provides no fiancial protection. To assist with your search for a trustworthy company, we've supplied a checklist just below (and in no specific order) of a number of legit organisations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: