 GbcueAlmost P.E.Premium
join:2001-09-30
Santa Rosa, CA
kudos:8
 ·AT&T U-Verse
1 edit | reply to banditws6
Re: Locked to T-Mobile? said by banditws6:I had no idea that the technology to support both spectrums does not even exist yet. Is there a "global standard" GSM spectrum that either AT&T or T-Mobile is not conforming to? Whichever one isn't conforming is the one that deserves my eye-roll. According to Wikipedia, »en.wikipedia.org/wiki/Universal_···s_System
The specific frequency bands originally defined by the UMTS standard are 1885–2025 MHz for the mobile-to-base (uplink) and 2110–2200 MHz for the base-to-mobile (downlink). In the US, 1710–1755 MHz and 2110–2155 MHz will be used instead, as the 1900 MHz band was already utilized.[6] While UMTS2100 is the most widely-deployed UMTS band, some countries' UMTS operators use the 850 MHz and/or 1900 MHz bands (independently, meaning uplink and downlink are within the same band), notably in the US by AT&T Mobility, New Zealand by Telecom New Zealand on the XT Mobile Network and in Australia by Telstra on the Next G network.
T-Mobile is operating within UMTS "spec" while AT&T is out of spec for 3G deployment frequencies.
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