Most mobile phones don't have cell data available - I think most of the RF sections are partitioned off and barring a special mode can't be seen as they switch cells. However I would look at BitPim as it can access the onboard filesystem and that sometimes contains interesting things.
[1|user@Nokia-N800-23-14|~]gnokii --getnetworkinfo GNOKII Version 0.6.27cvs Network : T-Mobile / Western Wireless / Voicestream (United States of America) Network code : 310 26 LAC : a5a1 (42401) Cell id : 00004fbc (20412) [1|user@Nokia-N800-23-14|~]_