. net 10 my phone says mobile network didconnected

Who issued the card/

call the carrier

Activate phone SIM card or other device Copy Transfer Contacts to New Phone AT Wireless Support

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.

That is a reliability issue and reportable to consumer protection agency. Try speaking to net 10 at higher level an do let them know what you may do- only if they are not co-operative. They can help easily since you have not used the card.

Yes..you can unlock your Samsung SGH-A927 using the codes.I found an unlocking service at Prounlocking.com .They offer the service at cheap price.Through this you can unlock your mobile easily.

TO CONNECT NET WITH SAMSUNG MOBILE C3200you must have-
1.gprs setting
2.activate gprs
first of you have to contact your service provider and ask them to activate gprs on your sim card.gprs activation may take some time.
after gprs activation now call customer care and ask them for gprs settings.
they will send you setting as sms.
when you open sms it will ask you to save and set as default setting press yes.
now you are done open your phone browser and enjoy surfing.

it may be due to network lock, contact service provider
you need to specify the phone model and network provider,you looking for unlock codes try here http://www.mobile-unlocker.com/

yes unlocking is always possible visit ur local mobile mechanic

Service unavailable mean you don't have any network. Check with your service provider if they have barred your service or not. This has nothing to do with mobile phone. If there will be no services from your service provider you will not be able to call or send message or receive calls.

Summary: Check once with your mobile service provider.