...change is the faster data access carriers offer via various technologies (Verizon and Sprint use 1xRTT, or "1x Radio Transmission Technology"; AT&T and T-Mobile (formerly VoiceStream) employ GPRS, or "General Packet Radio Service...

...kbps, below the theoretical peak of 144 kbps. Sprint PCS's Vision service uses the same basic 1xRTT (1x radio transmission technology) as Verizon's Express Network, but performed both more consistently and slightly slower than Verizon...