I had similar issue with my wife's C7 that I purchased for her birthday. It became dysfunctional within a day of purchase. It reset automatically and would not turn on. If it did turn on, it would hang for unknown reasons. I estimated that my wife was able to use her Nokia C7 less than 10 hours of the 7 days when it was in our possession before I sent it for Nokia service center. It was the worst purchase that I ever made because this handset is dysfunctional since it was shipped from Nokia factory. It seems that there is systemic problem with this Nokia C7 if one were to do goggling on "Nokia C7 hang".
Ultimately, I have sent my wife's C7 to 1Utama Nokia service center. I was informed that they are still waiting for 'motherboard' and the estimated time for Nokia to have some sort of fix my wife's brand new handset is at least 1 month. I overheard that the 1Utama service has already received 50+ returned C7 within a week of its launching date.
I felt cheated and very upset with this kind of quality expected from this supposedly world leader in handphone. I have been their most loyal customer for the past 10 years. I have never considered purchasing other brands except Nokia due to its quality and ease of user interface.
My experience was like purchasing a luxury car but you are unable to start the car for the next one month till the manufacture replace the engine. In the meantime, your hard earned money has gone to this supposedly world class company's pocket. They have NOT even offered to exchange their broken C7 handset with brand new one. It seems that Nokia think that their fumed customer can wait patiently for months to get their new handset fix. Due to Nokia's incompetency, my wife has to continue using her old handset which was supposed to be replaced by her new 'high tech' Nokia C7.
The decision by Nokia to launch this dysfunctional handset (and never publicly acknowledging their mistake or offering new replacement to affected customers) has lost one loyal buyer for good. I will never consider Nokia as my first choice handset after this experience.
Added on November 24, 2010, 12:45 pmI have made similar complains in the Nokia online forum.
http://conversations.nokia.com/2010/11/16/...e-for-everyone/There u go another real loyal customer gone...