What is a network 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 phones by producers to be used by carriers to restrict the use of these phones to specific locations and/or networks. This is contrary to a cell phone (retrospectively called SIM-free or unlocked) that does not enforce any SIM constraints.

Unlocking Technology:

A phone can be unlocked simply by entering a code provided by the service operator. Alternative mechanisms consist of software running on the device or a computer or laptop connected to the handset, hardware devices that link to the device or over-the-air by the carrier. Almost always the unlock procedure is permanent. The code required to eliminate all locks from a cell phone is known as the master code, network code key, or multi-lock code. If the phone is network locked it will usually display one of these messages: SIM network PIN blocked, Enter lock PIN.


Quite often a SIM-locked handset is sold at a noticeably lower price than an unlocked one because the service provider expects income thru its service. SIM locks are employed on lower priced (pay-as-you-go) units, while discounts on more pricey handsets require a subscription that gives guaranteed income. Unlocked mobile phones have a improved market value.

Unlocking Services:

Certain organizations offer a imei mobile phone unlocking service . This service requires individuals whom want to unlock a phone to supply their IMEI number to a unlocking company and quite often they will also request the country and cellular network the device is locked to, either sent via email or entered on their website. Now you should be clear on what a I.M.E.I. number is and how you can retrieve it from a cell phone, but why do you need this? One of the main functions of finding a I.M.E.I. number is to allow a cell phone to get unlocked so it can be used with another network, potentially saving you a lot of cash by changing to a cheaper PAYG service. If you have decided you want to unlock your cellphone, you've confirmed that your cellphone isn't Blacklisted, and you plan to use it with another carrier, then one of the best website to get The Only Working Method To IMEI Unlock Virtually Any Smartphone is Unlock.Zone - we highly recommend them!The supplier will then provide (in return for a fee) a unlock code for the mobile phone handset.

Unlocking Service Providers:

Unfortunately there are a lot of dodgy sellers working in the cell phone imei unlocking industry. Consequently it pays off to be sure you use a trustworthy supplier for such a service. To aid with your search for a trustworthy company, we have provided a list below (and in no specific order) of a few legit organizations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: