This phone does not get signal, it is a prototype device.
Rare Ericsson T20s (Silver Weave) - "ESTHER" Prototype w/ Internal OS - R&D Unit
*VERY RARE* PROTOTYPE P1B Ericsson T20S "Esther" GSM Mobile Cell Phone Sweden
Ericsson T20s Vintage Collector's Phone, Powers On inc charger ,instructions
ericsson t20s
Ericsson T20s Mobile Phone Vintage With Charger
Ericsson T20s Mobile Phone
