I bought a Nokia Lumia 710 which is not even a month old. I already had to take it to the care centre as some of the applications where not working. They reinstalled the software but absolutely of no use. I initially thought it would be because of the operator. And switched my connection to airtel. It worked for 2-3 days and that's the end. My phone does not have internet connection. An application which is claimed to have rectified the issue is no more available on the market to download. I call up the Nokia care they asked me to restore which was of no use. And then they told its a known issue and will be resolved at the earliest. Whatever happens they don't give us a definite time. They only tell as soon as possible.
This issue is only with Nokia windows phone. Other manufacturers with same OS doesn't have any issues. It high time Nokia improve their existing phones, rather than launching new phones every now and then.