Материал из Энциклопедия Зимовок
Перейти к: навигация, поиск
SIM lock:

A SIMLOCK, NETWORK-LOCK, carrier lock, imei lock or (MASTER) subsidy lock is actually a technical constraint built into CDMA and GSM mobile phones by manufacturers to be used by service providers to limit using these phones to specific countries and/or networks. This is in comparison with a phone (retrospectively called SIM-free or unlocked) that does not enforce any SIM restrictions.In the event the devices weren't locked, owners may sign an agreement with one particular organization, obtain the marked down phone, then stop paying the monthly bill (thus breaking the contract) and begin using the phone on a different network or maybe sell the phone for a profit. SIM locking reduces this by barring a change of network (using a new SIM).

Unlocking Technology:

Normally, a locked handset will show a message if a restricted SIM is used, requesting the unlock code. On recent phone models operating on Android os software, the cellphone should show a message saying “SIM network unlock PIN” or “Enter Network Lock Control Key” if it is network locked. Windows phones are going to show the message, “This SIM card can only be used on specific networks. Contact your customer service center for the unlock code”. Some other models could show varying messages for instance "Enter special code" or "Enter unlocking code," or in some instances the phone will probably display a message saying it's locked. As soon as a valid code is keyed in, the mobile phone handset displays "Network unlocked” or “Network unlock successful”.


The reason to unlock a device is to be able to use it with another type of SIM card. Users may want to carry on using their cell phone but with a different provider or while traveling abroad they may need to connect to a foreign network using a pre-paid subscription.

Unlocking Services:

Many businesses offer a on-line unlocking service . This service requires those people whom wish to unlock a mobile phone to give their IMEI number to a unlocking company and in most cases they will also ask for the country and network the mobile phone is locked to, often sent through email or submitted on their web site. The company then will provide (once you have paid) the unlock code for the device. For some makes for example Nokia and Samsung various services also supply unique remote-unlocking software with directions, where a cable is needed to remove the SIM lock from home. Such organizations may email the unlocking code or software which can remotely unlock the device. The price for unlocking a phone will certainly change based on the mobile phone network it is locked to and the smartphone model itself, as every unlock code is unique to each specific device.

Unlocking Service Providers:

Disappointingly there are lots of fraudulent sellers active in the smart phone carrier unlocking industry. As a consequence it is recommended to be certain you find a honest provider for these services. Do your due diligence and investigate any potential suppliers before committing to submitting an order. In the case of on line providers, ensure they specify their public company name and corresponding registration details (all legit business must be legally registered with all the official authorities within their country of origin) and ensure they give a legitimate listed address and contact information on their web-site. In addition make certain 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 because this offers no fiancial safety. To assist with your search for a reputable supplier, we have provided an inventory beneath (and in no specific order) of a few genuine organisations currently offering such services.

Reputable Mobile Phone IMEI Unlocking Service Providers: