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Using cingular phone in St Lucia
Cingular's 8102i uses GSM 850/1800/1900
According to Cingular's International Details:
Digicell uses GSM 1800/1900
Cable & Wireless uses GSM 850
So hopefully this helps, and yes...it looks like your phone will work there for both Voice and Data.
(Hope you don't mind me using radioshack.com to help me in my research. Only site I could think of at the spur of the moment to have detailed information regarding Cingular's phones. Which can be confusing here at Phonescoop since some phones are offered by many carriers wi...
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I do not think your phone has the 900 band, but you should be okay without it. You may not get the best coverage though.
See the bands each carrier uses below.
http://www.gsmworld.com/roaming/gsminfo/cou_lc.shtml »
it says yes it will work.
Wireless Ventures (St. Lucia) Limited (Cingular Wireless)
GSM 900/1900
Live