Sim invalid message on European BB Pearl

If your Nokia 1661 displays invalid sim card message on screen,it is locked to network.You need to unlock it.To unlock use unlock code.Visit the site Theunlockarena.com get unlock code and unlock from service provider lock easily.Then use any GSM network sim card in it.

Since you say it is a GO phone, you need to call ATT and they may help you with that.

If the Nokia X6 16GB phone,displays invalid sim card message on the screen it is locked to some network.Please find out the network and country it is locked now.If it is locked to network,it will not accept other network sim card.But you saying it is accepting other networks sim card.How many network sim card have tried inserting in it?If you tried only one network sim card and it accepted that it is locked to that network.You can also try using some other network sim card.If it displays invalid sim message again.It is under network lock.To unlock it use unlock code.Visit the site Wickedunlock.com get code and unlock it easily.

What is your phone brand?It is Nokia 100 ?If the phone displays invalid sim message on the screen.It is locked to network.You need to unlock it.To unlock your Nokia 100 use unlock code.Visit the site Wickedunlock.com get unlock code and unlock it easily.Then use with any GSM network sim card.Check code is available for your network and country.If it is available get it and unlock it easily.Then use any GSM network sim card.It will not display invalid sim message on the screen after unlock it.

If the Blackberry Phone says Invalid Sim message on the display.It is locked to Network.You need to unlock it to use other network sim card.Visit the site Wickedunlock.com
get the unlock code and unlock it from network lock.Then use any GSM network sim card in it.

If you are getting an error message saying, "Invalid SIM Card" or "Incorrect SIM Card", then you would need to unlock the phone first.

Unlock Blackberry 8220 Pearl Flip



Unlock Blackberry 8220 Pearl Flip

Invalid sim means it's locked to a career but your simcard's career, to unlock your BlackBerry go to http://blackberrymep.com and get your unlock code along with unlocking instructions .

it needs an unlock code. you may have to purchase one or ask your provider for one. the procedure on how to enter it and where to purchase it can be found here.

Invalid SIM and Unregistered SIM are two different problems. Invalid SIM means the phone is locked to a certain company and you are trying to use a SIM card for another company. Unregistered SIM means the SIM card you are using is not active and you need to contact your service provider to get it activated. In order to unlock the phone so you can use anyone's SIM, you must contact the provider that the phone is locked to.