LANKA BUSINESS ONLINE – LBO Sri Lanka has dropped a controversial fixed levy from mobile phones which would have hit the poorest phone users the hardest, but slapped a 7.5 percent tax on calls, telecom minister Rauf Hakeem told parliament Thursday.The government initially proposed a fixed 50 rupee charge which would have hit the poorest or ‘bottom of the pyramid’ users hardest, as well as tripling a usage based charge from 2.5 percent to 7.5 percent.