I have one android phone, but while i am inserting the Sim card it is asking for some Sim activation code. please tell me what should i do

Zte cell phone unlocking instructions How to Unlock a ZTE Phone 1.Insert SIM card from a source different than your original Service Provider
(i.e. if you have a Rogers phone, use a non-Rogers SIM card),
2.Phone will ask you to enter Sim unlock pin (NCK code or PUK Code )
3.Enter unlock code
4.Phone will be unlocked

I assume you mean carrier unlock (allowing the use of SIM cards from other carriers and using the phone with different networks).

If the carrier is AT&T, if you get on their online tech support chat on their website and ask for an unlock code, they will usually give you one. Just enter it when you insert a SIM card from another network and you'll be good to go.

If it's not AT&T, it's doable but a bit more involved.

Your phone must be running the latest version of it's stock, UNROOTED ROM without any custom recovery/boot loader installed. Evethghing must be totally stock, and updated to android 4.1.1 or later. Once that correctly describes the state of your S3, proceed as follows:

Make sure you have a SIM card from the original carrier inserted and at least 1 bar of reception. it doesn't need to be one with active service - expired is fine. All cell phones, by federal law, allow dialing of 911 even if they have no active cellular service being paid for. So a reduced connection is still obtained even with an expired SIM.


Dial the following keys *#197328640#

Main Menu
[1] UMTS
[1] Debug Screen
[8] Phone Control
[6] Network Lock
Options [3]Perso SHA256 OFF
(after choosing this option, wait about 30 seconds, then go back one step by pressing the Menu button then select Back, now you are in
[6] Network Lock
then choose
[4] NW Lock NV Data INITIALLIZ .....
wait for a minute then reboot your phone

It should now be unlocked, but you won't be able to tell without inserting a SIM from a different carrier. If you do, it should work without any issue.

This might work without any sim card inserted, or a different one, or might not. If you don't have the original, just try and see.

You can't know whether your Samsung or LG is locked to your carrier before inserting sim card with it . You need to insert another network sim card in to your phone, if it asks for unlock code, you can found that your mobile is tied with your present carrier . To unlock it, use unlock code . You can get it from any of the online vendors like MobileUnlockSolutions.com to unlock it .

There may be various reasons for your problem.
* If your SIM card is a new one, ensure whether it has been activated. The activation process may take some time wait for it.
* If your SIM card asks for a PUK code, it may have been locked due to repeated attempts of SIM lock. Get the PUK code from your network provider and unlock it.
* The SIM card may be damaged. Try inserting it in any other active and network free phone. If it doesn't work on that too ask your network provider to replace a new SIM card with same number.
* The SIM port on the mobile phone may be damaged. Try inserting any other active SIM card and check for it. If it doesn't work get it repaired.
* Your cell phone may restricted to any specific network and The SIM card may be some other network. Unlock your phone using unlock code. Get the unlock code from the network provider or from any trusted online vendors like TheUnlockArena.com at affordable cost with easy unlocking guide. Good luck.

Hi. you can get the network unlock code for a Samsung E2550 from Mobile-Unlocker.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..........UNLOCKING INSTRUCTIONS..........
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
Method 1:
1 - Switch ON your Samsung E2550 Monte Slider with a NOT ACCEPTED SIM Card.
2 - Samsung E2550 Monte Slider will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung E2550 Monte Slider shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung E2550 Monte Slider with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung E2550 Monte Slider.
3 - Compose : #0111*CODE#.

Please call the Customer Care of your Network Operator (sim card provider), they will tell your the code. There's no other way or no means to get the code except from the Service Operator. They might ask your few questions related to the Sim Card, like your name or your address, tell them promptly and they will give you the puk code for your sim card. It's also important to note down the Sim Card Number (number written on the sim card) if in case they ask you the sim number. You will also be assisted on how to disable the security settings.

Note: if you keep entering random/unknown numbers/codes, the sim card will be locked and will be rejected. It'll not be usable anymore. Good luck.

Thanks for using FixYa.

nokia6030 mobil is not conecting the network its showing insert sim card

you need the phone unlock try online at topsony.com

Please follow the instructions carefully! Following are the 12-point instructions to unlock your Samsung E250 phone:
1. First do a CUSTOM RESET by tying in:
*2767*2878#
(Phone may display foreign language – don't worry! The last digits after the * will appear as - - - -; this is normal)
2. Turn off your phone
3. Take the battery and SIM out of the phone
4. Take a wrong network SIM (a SIM the phone does not currently accept) and insert it ONLY HALF way in, so when you turn on the phone it won't detect the SIM. Very important so the phone won't ask for network password and will show "Insert SIM" message.
The process of inserting only half of the SIM. I advice you to take care and do it with a soft approach as you might not have done this before.

5. 2. Now put the battery in carfully behind the protruding SIM card and switch the phone on. The phone must show "Insert SIM" message.
6. 3. Without turning off the phone, now push the SIM card all the way in, at this stage the phone must continue to display the "Insert SIM" message with the WRONG SIM inside.
7. Now make a FULL RESET by typing: *2767*3855#

9. Change the NCK password to 8 zeros by typing: *7465625*638*00000000*00000000#
8. The phone should reboot working with "wrong" SIM inside. (Do not turn off the phone)
10. Disable network lock by typing: #7465625*638*00000000#
12. Check this is done with *#7465625#
If your phone is not unlocked please retry the above ensuring all steps are followed to the letter, 9 out of 10 people who have problems have made a simple error and find that when they repeat all the steps it works.