I am using nokia 3120c firmware v-6.20
This phone is running about 1 year. Now I am facing a new problem. My cell phone switch off with in 2-5min when I tryed to switch-on it. I replaced it's battery with new one but that problem still there.
please help me.
You need to bring it to your nearest Nokia Care Point.
You can find your nearest Nokia Care Point at:
http://www.nokia.com select your country, go to the support section, then select repair.