Samsung d900i i have a d900i locked to vodafone,but if i insert another sim it says phone freeze.please assist as i need to unlock to triband a.s.a.p an it just refuses to work.whats the solution to phone freeze and how do i unlock from vodafone

To use the Telasta sim you first have to get an unlock code from Vodafone.
Look in your contract when they have to give you the sim lock release code

To Unlock SAMSUNG E2121B use Unlock code.Buy Unlock code from
Superunlockcodes.com and unlock it easily.

If the Samsung C3050 says invalid Sim means it locked to network ...you need to unlock it...You need to specify the network locked in spain...I have unlocked my SAMSUNG C3050 from Vodafone spain using the unlock code from the site Simpleunlocking.com/samsung-c3050/rs16wp9/ and got the free UNLOCKING instructions at here Mobileunlockguide.com and unlock it step by step.So you can unlock it and use woth any GSM Network Sim card.

your sim get lock not your phone buddy go for your vodafone customer care for unlocking code for your sim

it may be due to network lock, contact service provider if it locked , you can get unlock codes here http://www.theunlockarena.com/samsung/rs13wp8/
you need to specify the country and network provider,

check, if your model is available in the list

PLEASE BACK UP YOUR FILES BEFORE UNLOCKING
This will also bring the phone to default settings
1. First do a CUSTOM reset: *2767*2878#
turn off the phone
2. take out the battery and sim and put wrong network SIM and insert only a half of it,
Very important so it won't ask for network password and shows "Insert SIM" message.(possibly in a different language)
Now put the battery ,and switch the phone on .(phone shows "Insert SIM" message.)
3.push the sim fully in at this stage the phone is still asking to "Insert SIM"
4. Make a FULL reset: *2767*3855#
5. The phone should reboot working with "wrong" sim inside.
6. Make a Change the NCK password to 8 zeros by typing: *7465625*638*00000000*00000000#
7. Now Disable network lock By typing: #7465625*638*00000000#
Phone is unlocked

Hi,

it sounds weird that it worked before with same sim card. Generally USIM locked message means phone is locked to network and you need to unlock it with network unlock code to remove USIM locked and use phone on different network.

gsmwong

Hi Friend,
Kindly provide me the IMEI number of the mobile i will provide the Code


u can get it by typing *#06#

Regards,
Ayyasam

you can unlock your phone (ie allow it to accept SIM cards from any network) using the ''full reset'' code - *2767*3855#.
Hope this helps