nokia 8210 signal problem

hi friends im new to nokia need ur help ...pls...

i have this 8210 it works fine but oftenly the signal drops with the service provider name, sometimes just the signal it self without the service provider name

also when you press on the speaker the screen fades and sometimes it bring back the signal
or when i turn it off and on again the signal almost always comes back....

dont know what could be the problem hardwhere ,softwhere maybe both????
pls help

Run a test with Eeprom tools 3.1 and 4.0 /You can find them in DCT3 software section..look forr my post/ with this two tests You will get a point about Your problem...hope its just oftware.../post result if You need more help/
Good luck!
Regards!
Sergo_Zmeia