No Network COverage in Nokia 6300

First Option:
Phone in the Other Sim and check the Phone Network Signal If Network Signal Problem not Solved So
Secend Option:
Your Phone Network IC Fault So Please change Network IC
And Network Signal Problem will Solved
if it is there isn't much you can do on this side of the network.
Contact your phone company

Get the restriction code for your Nokia from your network provider.After that you may follow the instructions at http://www.mobileunlockguide.com/ .It helps to unlock your mobile easily.

ITS A PROBLEM WITH THE NETWORK COVERAGE OT VODAPHONE , THERE IS NOTHING YOU COULD DO ABOUT IT, EXCEPT TO WAIT FOR BETTER SIGNAL.
REGARDS.
PLZ. DON'T FORGET TO RATE

Phone is not receiving any radio signal / received signal is too weak:
Confirm that network coverage is available where you are by contacting your service provider.

SIM card is not working properly:

Insert your SIM card into another phone
Note: Contact your service provider if you get the same message again.
Phone is not working properly:
Insert your SIM card into another phone. If the second phone works with the inserted SIM card, then
the problem is probably with the first instrument.
Note: In this case, contact your nearest Sony Ericsson service center regarding your phone problem.

hey.. i guess there s some prob with your internal mobile network..so it won be able to pick up signals.give it for a service

Take your phone to your cell phone provider and discuss the problem. Your phone is not picking up the proper signal coverage that it should and is saying "No Network Access." This can only be solved by your cell phone provider.

first check the coverage of the bsnl network.if it is proper look for a copy of the sim.if still its not working repair the antenna of the phone.

your phone must be an imported one if not contact your mobile vendor and have an unlock

It is better to replace your phone with new one as you have bought recently. contact your retailer.

select network manualy in your handset. or contact nokia care