What is a networklock

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SIM lock:

A SIMLOCK, NETWORK-LOCK, CARRIER LOCK, IMEI LOCK or (Master) SUBSIDY lock is a technical limitation built into CDMA and GSM cellular phones by producers for use by service providers to restrict the usage of these phones to particular locations and/or networks. This is contrary to a cell phone (retrospectively called SIM-free or unlocked) that does not enforce any SIM limitations.SIM locking is incredibly common if subsidized phones are offered with pre-paid contracts. It is crucial to note, however, that this technology tied in with the cellphone must be compatible with the systems used by the network carrier. A GSM mobile phone can only operate with a GSM carrier and is not going to operate on a CDMA service. Likewise, a CDMA mobile phone can only work with a CDMA service and will never operate on a GSM network. Note that more sophisticated (2013+) advanced cell phones are equipped to support both CDMA and GSM technologies, permitting customers to utilize their mobiles on any network.

Unlocking Technology:

A smartphone can be unlocked by entering a code provided by the service operator. Alternative mechanisms consist of software running on the handset or a pc connected to the handset, hardware devices that link to the phone or over-the-air by the service provider. Typically the unlock operation is permanent. The code needed to get rid of all locks from a cellphone is called the master code, network code key, or multi-lock code. If the phone is carrier locked it will generally display one of the following messages: SIM network PIN blocked, Enter lock PIN.


The primary reason to unlock a phone is going to be able to use it with another SIM card. Users may wish to carry on using their cellphone but with a new service or if traveling overseas they might need to connect to a international network with a pre-paid subscription.

Unlocking Services:

Various organizations provide a permanent cell phone unlocking service . This service needs individuals whom need to unlock a handset to give their IMEI number to a unlocking company and often they will also ask for the country and cellular network the handset is locked to, sometimes sent via email or entered on their web site. The organization will then provide (at a cost to you) the unlock code for the mobile phone handset.

Unlocking Service Providers:

Regrettably there are many of fraudulent organizations working in the mobile phone unlocking industry. Consequently it is prudent to be sure you use a genuine supplier for this service. Take the necessary precautions and investigate all potential dealers before choosing to making an order. In the case of online suppliers, make sure they list their public company name and associated registration details (all authentic company is required to be lawfully registered with the official authorities within their country of origin) and ensure they give a genuine certified address and contact information on their website. Furthermore make sure that any payments made are done so through legitimate methods 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 offers no fiancial safety. To assist with your search for a trustworthy supplier, we've supplied a list beneath (and in no specific order) of several legit organizations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: