Hi,Some points for clarifications,1) EVDO is not implemented in all states. it is still in trial stage in many places..Only Kerala and Bangalore is getting good coverage..2) Roaming is not possibile now..because of technological difficulty..testing is on that account going on now...3) EVDO will be implemented as to not cut the DATAONE users base.. so only where DATAONE is not viable CDMA/WLL/EVDO towers are placed now...4) so the signal strength not always same in every place..My hunch is increase the speed limit in DATAONE plans and better service, than give EVDO services even where DATAONE existed, will do that the two technology co exist with each other...because EVDO will struck at 2.4mbps whereas DATAONE can increase its speed more than 8 Mbps...Policy makers in BSNL should make their mind immediately,..because time is running out for them and the users are impatient now..with regards,vaithy