Ayun na, dami na nagtatanong about sa sun unlinet. To answer your concerns, lalong lalo na sa nagtatanong kung pwede paactivate yung GPRS at pwede pa marevive yung sim. There is a NARROW CHANCE or close to impossible na marevive or maactivate yung di pa GPRS Activated Old SunCell. sim.
Anyways...
Most old SIM may R po sa signal. It means Roaming or registered sa ibang net. Sayang po, di napo maactivate yung GPRS kasi disabled na po yung feature. Tinry ko magactivate pero lagi Invalid command yung reply.