Will my mom's unlock code work on my nokia lumia 510? Should I really pay for it?

Plenty of places will give you the code But you got to PAY..
I doubt very much you will get it free. as the phone company itself issues the code.via third party. so someone has to pay.

Type in 'Lumia 250 unlock' in your search engine.for loads of 'instant unlock' sites

Hi.
I see the website which offer to unlock Lumia 920 , I tried this website, they really unlocked my Nokia Lumia 920 from at&t, i would like Thanks & appreciate to Team of AT&T Unlock Code shop.They provide really good service , I hope this service provider will unlock your Nokia Lumia 920.

Once again thanks http://www.attphoneunlockingshop.us/
the link of http://www.attphoneunlockingshop.us/products/USA-AT%26T-Nokia-Lumia-920-IMEI-Unlock-Code.html.Thanks USA AT Nokia Lumia 920 Unlock Code Unlock Nokia Lumia 920 from AT USA USA AT Nokia Lumia 920 Unlock Code Unlock Nokia Lumia 920 from AT USA
Nice vid. This site explains all this in very easy to order format:

USA AT Nokia Lumia 920 Unlock Code Unlock Nokia Lumia 920 from AT USA

Ya sure the sim work in other lumia phones only if the phone is unlocked one else if the phone is locked to some other network provider then it wont accept your sim until you unlock it .You can easily unlock your Nokia lumia phone using sites like TheUnlockArena.com here they are rendering network unlock code for all mobile models at reliable cost .You first check that whether the code is available for your mobile model ,country and network provider .If yes then pay for it and unlock your phone then freely use it with any GSM sim ...

Your previous service provider, or one of the many shops that advertise it. if you hoping to get it free, the software to do it costs a lot of money, has to be paid for.

The Nokia Lumia which you have bought must be locked to some specific network. That is why it is not supporting your current SIM card. You need to unlock your Nokia Lumia to make it work with all network's GSM SIM card.
To unlock a Nokia Lumia phone, you need to enter it's unique unlock code. You can get the unique unlock code for a Nokia Lumia from
MobileUnlockSolutions.com at affordable cost with easy unlocking guide. Good luck,

Hi free unlock code is not available for your nokia lumia 510. So better you can go for paid unlocking service. I would suggest this site Mobileunlocksolutions.com here you can get the unlock code and unlock your nokia lumia 510 easily. To get the code you have to mentioned which country is locked now,network provider and imei number. Then they send unlock code through email.
Mobileunlocksolutions.com

Hey mate, give this website a try: http://www.freemobileunlockcodes.com/brands/nokia/unlock-nokia-lumia-510-free/ just follow the guide on there, it shows you step-by-step how to unlock your nokia lumia 510 for free. It worked for me, I'm on Tesco also so could work for you too, worth a try i suppose. i hope i answered your question and it worked for you. good luck.

need code to unlock from crock ireland nokia lumia 610

Hi
you can unlock your AT&T Nokia Lumia 900 sim lock by using AT&T Nokia lumia 900 sim unlock code .
you can get your AT&T nokia lumia 900 sim unlock code by trusted of world attphoneunlockingshop.us

Hi free unlock code are un trustable many times .I recommend you to visit Superunlockcodes.com to unlock your Nokia lumia 900 mobile from network lock .Here they ask you the network name to which your mobile is locked and the IMEI number of your mobile .Then at last they deliver you code to unlock your mobile.