What is a NetworkLock

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SIM lock:

A SIM lock, NETWORK LOCK, carrier-lock, IMEI-Lock or (master) SUBSIDY lock is actually a technical limitation built into GSM and CDMA mobiles by producers for use by providers to restrict the usage of these phones to a particular countries and/or networks. This is in contrast to a phone (retrospectively called SIM-free or unlocked) that doesn't enforce any SIM restrictions.Unlocking a mobile phone is virtually universally legal. Additionally, it's legal for providers to force SIM locks for certain time periods, differing by location.

Unlocking Technology:

A smartphone can be unlocked simply by entering a code supplied by the network operator. Different mechanisms incorporate software running on the handset or a computer or laptop connected to the handset, hardware devices that connect to the phone or over-the-air by the service provider. Generally the unlock procedure is permanent. The code required to get rid of all locks from a cell phone is known as the master code, network code key, or multi-lock code. Generally if the device is carrier locked it will usually show one of the following messages: SIM network PIN blocked, Enter lock PIN.


The key reason to unlock a mobile phone is going to be able to utilize it with an alternative SIM card. Consumers may need to continue using their cellphone but with a different service provider or while traveling abroad they might need to connect to a overseas network by using a prepaid subscription.

Unlocking Services:

A lot of companies offer a remote unlocking service . This service requires people who want to unlock a mobile to provide their IMEI number to a unlocking company and sometimes they will also require the country and network the mobile phone handset is locked to, often sent via email or entered on their website. The organization will then supply (for a fee) an unlock code for the handset.

Unlocking Service Providers:

Disappointingly there are many of dodgy online retailers working in the smart-phone IMEI unlocking industry. Consequently it pays to ensure you find a trustworthy supplier for these services. To assist with a search for a reputable supplier, we've supplied a listing just below (and in no particular order) of several legit organizations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: