Need to unlock this phone so that my sim can work

a sim card or phone needs a puk code or is locked BECAUSE it is not active,in order to unlock a sim card,or receive a puck code,you need to either,pay the balance owed,buy a new monthly service,open a new contract with a cell service or return the sim card or cell phone to whom it belongs to,we at fixya CANNOT GIVE YOU A NUMBER TO UNLOCK YOUR SIM CARD OR PUK CODE,there is a reason why it is locked,if it was easy to get a code,then anyone could steal your phone and use it and you couldnt stop its use for at least a month.
a phone is jail broken when you alter it to work on a different cell service provider,we at fixya do not jailbreak anything,if it isn't legal,then it doesn't belong here.

Try the SIM card in a friend's phone.
Try a friend's SIM card in your phone.

Warid SIM card is available in Congo, Pakistan and Uganda. From which country are you from?
The HTC phone from London might have been locked to some network from United Kingdom. That is why your Warid SIM card is not working with it.
To make your SIM card work with the HTC phone, You need to unlock it. The safest and easiest way to unlock any phone is using unlock code. You can unlock your HTC phone too using unlock code itself. You can get the unlock code for a HTC phone from ClassicUnlocking.com at affordable cost with easy unlocking guide. Good luck.

First ensure through your network provider that the new SIM card has been activated. If not wait for the activation to complete. Everything will be fine.
If the activation has been completed and still if it doesn't work, Insert your SIM card into any other active mobile phone and check whether it works with it. If it doesn't work there is some problem with your SIM card. Contact the seller where you bought your SIM card. If it works fine with the other phone, then there must be some problem with your new phone's SIM port.
Try inserting any other active SIM card to your phone and check whether the SIM port of your mobile phone is fine.
Also make sure that the new phone is free from network restriction or locked to same network of your new SIM card. If it has been locked to some other network, you need to unlock your device.
To unlock a mobile phone from network restriction, you need to enter it's unique unlock code. You can get an unlock code from the respective network provider or from any private service. For example, If you have a Blackberry phone, You can visit UnBBLock.Com to get the unlock code. If you have any other model phone, visit http://www.mobile-unlocker.com/ to get the unlock code at affordable cost with easy unlocking guide. Good luck.

If you wish to unlock your dual sim phone you can visit Unlock-Zone.com where you need to mention your phone model,network and country your phone is locked to.They provide you with unlock code and free unlocking instructions.

I think if it is locked to particular network provider.So it's not accept your sim card.If you want to put your own sim card on your Nokia 6350,you will need to unlock your mobile phone.You can unlock your mobile phone using network unlock code.It's one of the best solution to unlock your mobile phone.If you need an unlock code visit Simpleunlocking.com Here you can unlock your mobile phone within a day.

you it work's.

To Unlock AT&T Phone sim lock,use unlock code to Unlock it...Visit the site Wickedunlock.com/supported-phones/rs11wp7/ get the code and unlock it easily..Then use with any GSM Network sim card...You need to specify the Brand and model of the phone and get it unlocked..

You will most likely have to purchase a new sim card as some phones are sim card specific. Also try a jail breaking program or have it done.

Please check you SIM on another phone and if there are no issues then the phone has issues. Clean the SIM contact points, make sure that the SIM is fitting in the correct direction to the SIM holder. If there is no response then the mother board is a suspect.
Need to take consensus to confirm and estimate.