Remove sim lock - Cell Phones

Remove back cover and remove battery and check sim is properly fixed in side sim slot or not. If sim is loose inside sim slot then put some paper packing make it properly fixed also remove sim and rub with cotten lock the golden part of the sim and insert again. Also check the sim in another mobile and if in that mobile sim also not recognized then there is issue with your sim card replace it.
here is how to sim unlock mobile http://mobile-cellphones.blogspot.com/2016/06/android-smartphone-sim-unlocking-details.html

Go to settings then sim / security lock you can see there sim lock enter the code then choose sim lock off/ on

Contact the service provider

To remove the sim lock in your Blackberry Pearl 8100 use unlock code.Which country and network it is locked now?Get the unlock code from the site Unbblock.com and unlock it from network lock step by step.

Do you mean remove sim lock from your Samsung sgh E900?. If so you can remove sim lock from your mobile using unlock codes. To get unlock code for your mobile visit wickedunlock.com

Do you mean your sim is locked with a particular network?To remove it you can get the unlock code for your Samsung M620 from Onlinegsmunlock.com and remove the network lock by submitting the country and network to which the mobile is locked to.

Hello,

Some GSM networks allow their costumers to remove sim locks after they have used their services for more than a year. This could be done at a service center by entering a special code from the keypad (it's 8-15 digits).

One can also remove sim lock outside official service centers. The info about lock is saved in the phone's memory. It could be removed by knowing where it saved. A special cable needs to be attached to the handset. Program sends unlocking signal to the phone. Some handsets require more difficult procedure. The memory chip has to be removed from the phone, the sector of the software, which is responsible for the SIM-Lock, has to be found and edited by the programmer. In older versions of Motorola SIM-Lock could be removed by a special SIM-Card that is called CLONE CARD. All you need it's just a set of cables, programmer and the rarest tool - the programs. They rare, because need to be updated all the time, due to nonstop developing phone models and GSM market.

If you cannot do this your self, please contact your service provider.

Thanks for contacting FIXYA.

the sim lock was enabled, remove the sim lock
use this code
*7465625*28746# = Auto SIM lock ON
#7465625*28746# = Auto SIM lock OFF