MY NOKIA 3110C PHONE AUTOMATICALLY RESTARTING ANYTIME. WHT SHOULD I DO?
You can try resetting the phone if you can still go to the settings menu, select restore factory settings, and enter 12345 for security code,
also you may try removing the mmc(in your case its a microsd) and try booting the phone, if it dont restart automatically without the mmc, the mmc might be corrupted or have virus in it.The only solution would be to scan and remove virus then reformat the mmc then take it back to the phone.
Lastly, if the above solutions dont work, i would suggest it be re-programmed, you can do this if you can find a repair shop for this. I would not suggest doing it yourself(mainly because it requires usage of special gadgets or boxes, and its expensive to buy one just to repair your phone)
Just be sure the repair shop is accredited or authorized by nokia to perform repairs.