Changes to give 'Big 3' fresh zeal

Maintaining profit stream still a tough challenge, say experts

Laughs were shared, hands were shaken and some tears shed after the much-anticipated change of the guard at the nation's top three telecom carriers on Monday.

A day after the new helmsmen took control, there are still several unanswered questions like what else will change for the carriers besides the nameplates on the chairmen's doors.