What is a Carrier Lock

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SIM lock:

A SIM-Lock, network-lock, carrier-lock, IMEI-Lock or (Master) subsidy lock is really a technical limit built into CDMA and GSM phones by producers to be used by service providers to limit the use of these phones to specific locations and/or networks. This is not like a phone (retrospectively called SIM-free or unlocked) that doesn't impose any SIM restrictions.

The majority mobile phones can be unlocked to operate with any GSM network provider, although the phone might still show the original branding and may not support popular features of the new carrier. In addition to the locking, smartphones could also have firmware that come with them which is specific to the network provider. This firmware is installed through the service provider which is separate from the locking mechanism. The majority handsets can be unbranded by re-flashing a new firmware version, a process suitable for advanced users only.


Unlocking Technology:

A handset can be unlocked simply by entering a code provided by the network operator. Different mechanisms include software running on the device or a computer or laptop connected to the phone, hardware devices that attach to the mobile or over-the-air by the service provider. Usually the unlock procedure is permanent. The code required to get rid of all locks from a mobile phone is called the master code, network code key, or multi-lock code. If the phone is network locked it will typically show one of the following messages: SIM network PIN blocked, Enter lock PIN.


Economics:

Device providers have financial incentives both to improve SIM lock protection (which placates service companies and permits exclusivity discounts) and also to weaken it (extending a handset's overall appeal to users that aren't interested in the provider that offers it). In addition, making it too difficult to unlock a device may possibly make it a lot less desirable to network service providers that have a legal obligation to supply unlock codes for certain devices or in specific countries.


Unlocking Services:

A number of companies provide a on-line unlocking service . This service calls for people that wish to unlock a phone to provide their IMEI number to a unlocking company and quite often they will also ask for the country and cellular network the mobile phone is locked to, frequently sent by email or entered on their website. The supplier will then provide (for a fee) the unlock code for the mobile. For a lot of manufacturers including Nokia and Samsung a variety of services additionally offer special remote-unlocking software with instructions, when a cable is needed to remove the SIM lock from home. Such vendors may well email the unlocking code or software which will remotely unlock the unit. The cost for unlocking a phone will vary depending on the network it is locked to and the device model itself, as each unlock code is unique to each individual handset.


Unlocking Service Providers:

Unfortunately there are a lot of scammers on-line retailers operating in the cellphone carrier unlocking industry. As a result it pays to ensure you find a trustworthy service provider for this service. Do your due diligence and investigate all potential retailers in advance of choosing to making an order. In the case of on-line providers, ensure they provide their formal company name and associated registration information (every authentic business is required to be legally registered with the official authorities for their country of origin) and make sure they supply a legitimate registered address and contact details on their website. Also make certain that any payments made are thru legitimate sources for instance a recognized bank or financial institution using a debt or credit card, but never make payment via a direct transfer because this provides no fiancial protection. To aid with your search for a trustworthy company, we have provided a checklist just below (and in no particular order) of a number of legitimate organisations currently offering such services.


Reputable Mobile Phone IMEI Unlocking Service Providers: