I want to unlock the nokia 3155i cell phone so i can use any service provider with it

HI is your Nokia 1661-2 mobile is asking for a network unlock code once you insert your sim in it then it mean the phone is locked to some other network provider due to this it wont accept any other GSM sim until you unlock it .You can purchase network unlock code from online providers like OnlineGSMUnlock.com for reliable cost .You first check that whether the code is available for your country and network provider .If yes then pay for it and unlock your phone then freely use it with any GSM sim ...

You can get unlock code for your Nokia 5235 here Simpleunlocking.com and and you can get free unlock instructions from mobileunlockguide.com. It's very useful do your step by step unlocking.

You can get unlock code for Nokia 6235i from MobileUnlockSolutions.com . There you have to give your Country and current network name along with your IMEI number to get the unlock code. They will give you the unlock code along with instruction on how to unlock. Follow the instruction correctly and unlock your Nokia 6235i .
Every Mobile phone will have an unique IMEI number .There are two simple ways to find your phone's IMEI number:
1.While your phone is switched on, type *#06#, your phone would then display its IMEI number.
2.The IMEI number of your phone can be found printed on the phone underneath the battery.

Unlock Cell Phones
Your cell phone may be locked to a particular cell phone provider and in this case it needs to be unlocked to use with a different cell phone service provider. To get the security code/restriction code to unlock the cell phone from the current cell phone provider so you can use the SIM card with a different phone provider, Please click on this link and follow my instructions :- http://www.fixya.com/support/r4049238-unlock_cell_phone If your phone provider does not help you then these WEB sites it provides security codes for a small price. http://www.mobileunlockstore.com/?gclid=CKDb2_y2558CFSlJagodxBkDHw http://www.mobileunlocksolutions.com/ http://www.superunlockcodes.com http://unlockcellphonecode.com/

Unlock Cell Phones
Your cell phone may be locked to a particular cell phone provider and in this case it needs to be unlocked to use with a different cell phone service provider. To get the security code/restriction code to unlock the cell phone from the current cell phone provider so you can use the SIM card with a different phone provider, Please click on this link and follow my instructions :- http://www.fixya.com/support/r4049238-unlock_cell_phone If your phone provider does not help you then these WEB sites it provides security codes for a small price. http://www.mobileunlockstore.com/?gclid=CKDb2_y2558CFSlJagodxBkDHw http://www.mobileunlocksolutions.com/ http://www.superunlockcodes.com http://unlockcellphonecode.com/

Your cell phone may be locked to a particular cell phone provider and in this case it needs to be unlocked to use with a different cellphone service provider. To get the restriction code to unlock the cell phone from the current cell phone provider so you can use the SIM card with a different phone provider, Please click on this link http://www.unlocking4u.com/unlock-your-phone/rs6wp2/ get the unlock code here & unlock the mobile according to the network you reside & gain solution .

you will able to unlock your phone here http://www.prounlocking.com/nokia-1661/rs8wp9/
They will provide the code when you enter your imei number,you just need to select your phone model and network provider

You may be able to do it with a program you downlad for your Sprint Nokia 3155i cell phone here.
Or copy and paste..
http://www.nokiausa.com/A4735050