MDA (Mobile Digital Assistant) was T-Mobile's brand for HTC communicators in Germany, the UK, the Netherlands and the US. The lineup included the MDA (2002, Wallaby), MDA II (2003, Himalaya), MDA III (2004, Blue Angel), MDA compact (Magician), MDA Pro (Universal), MDA Vario (Wizard), MDA Vario II (Hermes), MDA Compact III (Artemis), MDA Vario III (Kaiser) and MDA Touch (Elf). After 2008, T-Mobile switched to HTC's own names.
From Wikipedia
T-Mobile MDA is a series of T-Mobile-branded phones manufactured by HTC Corporation of Taiwan:
Source: T-Mobile MDA — Wikipedia (CC BY-SA 4.0)
Related models
Also in 2002
HTC
HTC Canary (Orange SPV)Windows MobileHTC
O2 XDA (HTC Wallaby)Windows Mobile
Orange SPV (series)Windows MobileSection: The Windows Mobile Era (2002–2010) · Model catalog: 2002