Koj puas paub tias thawj cov ntawv xa mus yog Merry Christmas? Yog lawm… nees nkaum xyoo dhau los, Neil Papworth tau xa xov rau Richard Jarvis ntawm Vodafone. Cov ntawv nyeem tau raug txwv rau 160 tus cim vim tias qhov ntev tshaj plaws ntawm cov lus uas tuaj yeem xa tawm hauv lub network siv Ntiaj Teb Txheej Txheem rau Kev Sib Txuas Lus (GSM)…