Frequently Asked Questions
Unlocking your cell phone has multiple benefits : It increases the resell value and marketability of your phone by not restricting the resell to a specific carrier,
it allows the handset to work worldwide (See What networks are compatible with my phone),
it eliminates roaming charges by allowing you to switch to a local carrier in the local region.
The Digital Millennium Copyright Act, introduced an exemption on November 27, 2006 specifically permitting unlocking of cellular devices. The exemption was scheduled to expire on October 27, 2009, but was extended on an interim basis, because the Register of Copyrights had not yet completed its triennial review of DMCA exemptions. In July 2010, the Librarian of Congress extended the DMCA exemption for another 3 years.
When the purchase price of the mobile phone to the consumer is subsidized with revenue from subscriptions, operators must recoup this investment before a subscriber terminates service. In order to secure their investments, GSM network providers implements a software feature called SIM Lock on the handset to prevent usage outside their network. Such subsidies are worth more than several hundred US dollars and in that's why carriers also charge an early termination fee; another form to recoup the subsidy investment.
An Unlock Code is a numeric string. When entered into a locked handset it releases the SIM lock restriction and allows the handset to be used on other GSM carriers.
The IMEI (i.e. International Mobile Equipment Identity) number is used by a GSM network to identify devices attempting to connect to them and therefore can be used for stopping a stolen phone from accessing that network. It's only used for identifying the device and has no permanent or semi-permanent relation to the subscriber. The IMEI number includes information on the origin, model, and serial number of the device.
IMEI = 14 digits + 1 Check Digit
IMEISV = 14 digits + 2 Digit Software Version Number
IMEI + SV = 14 digits + 1 Check Digit + 2 Digit Software Version Number
The format of the IMEI is AA-BBBBBB-CCCCCC-D, (15 Digits) although it may not always be displayed this way. The IMEISV drops the Luhn CD (i.e. Check Digit) in favour of an additional two digits for the SVN (i.e. Software Version Number), making the format AA-BBBBBB-CCCCCC-EE. The IMEI+SV incorporates both the check digit and the additional two digits for the Software Verison Number, making the format AA-BBBBBB-CCCCCC-D-EE.
On many devices, the IMEI number can be retrieved by entering *#06#, or is located in the battery compartment.
Android : Settings --> About Phone
Blackberry : Options --> Status
iOS : Settings --> General --> About
Sony Ericsson (New Devices) : Options --> status.
Sony Ericsson (Old Devices) : Dial * Right * Left Left * Left
Unlocking your phone will not affect your warranty. Here at Unlock4ever.com, our site has been designed to access the same techniques for unlocking your phone as the manufacturers. In fact, all new mobile phones are unlocked by default. Manufacturers only lock the phone as requested by carriers or service providers.
Yes, for example if you unlock an AT&T phone, it will still work flawlessly on AT&T.
No, Sorry once your order is placed and gone throught the server it can not be cancelled or no refund can be issued.
No, OEM software / OS updates should not lock the phone. However, in the event that the phone does lock again, the customer can reuse the original lock code already purchased to unlock the phone.