How should i unlock simcard network for mtn phone g280

So you are trying to use CELL C south Africa sim card in MTN network locked (Contract) Phone.You don't need to contact the Cell C.You need to unlock from current network lock MTN.So call MTN service provider and get unlock code to unlock it.If they won't give the unlock code soon,visit the site Unlock-zone.com get unlock code at low cost and unlock it easily.

What is your phone brand,model,IMEI number and which country MTN network it is ?Because MTN network available in SUDAN,South Africa and many other countries.So you need to specify that also.Get unlock code for MTN network locked mobile phones from the site Onlinegsmunlock.com and unlock from service provider lock easily using the unlocking instructions in the site

If your Nokia X6 16 GB Displays invalid sim card while inserting other Network GSM sim card like MTN ?
It is locked to network.You need to specify which country and network it is locked now.I have bought an Nokia X6 16GB in INDIA but it was locked to Australia Vodafone network .I have unlocked it and now using it in USA AT&T network sim card.So you can unlock your Nokia X6 16GB from current network lock using the unlock code from the site Onlinegsmunlock.com after unlock it use with MTN network sim card or any GSM pay as you go sim card it will not display invalid sim card message.

You can get your Nokia X2-02 unlocked using the unlock code from your network provider (MTN,South Africa) it may or may not be free....To get guidance on how to enter the unlock code you can visit Mobileunlockguide.com and follow their free unlock instructions and remove the network lock easily.

You can get the Network Unlock code for Your Nokia 5800 Express Music model Phone at
Simpleunlocking.com/nokia-5800-xpressmusic/rs16wp9/ and unlock it from network lock easily.Then use with MTN Network sim card in it.

Hi,

You will need to purchase an MTN Sim Card and insert it into the phone. If your phone is locked to your current network you will need to contact them directly to get the network unlock code to allow the phone to function with the MTN sim card.

Networks will respond positively if you inform them that you are currently in a country where you are unable to get coverage and you need the phone unlocked to allow you to use another network in this exceptional circumstance.

This is the best approach as online unlocking services are unreliable in my experience and you can end up bricking your phone altogether. Make direct contact with your home network and explain the situation as outlined. They are in possession of the correct network unlock.

If the phone is already unlocked to all networks it will work straight away on the MTN sim.

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If your Samsung SGH-Z500 is locked Mobile means you cannot Use in MTN Network......
You need to Unlock it...You can Unlock it from United Kingdom Orange Network Using the Unlock code here
http://www.onlinegsmunlock.com/samsung-sgh-z500/rs7wp9/

how can i unlock mtn Sim if its block

As you know the puk code is on the certificate or in the documents that come with the simcard, to obtain the code call your phone service provider who owns the number / simcard.

Don't try to guess the puk code, entering it wrong too many times will disable the card.

I've explained more about the puk code here if your intrested.