SHERINA Munaf bangs on a table in a restaurant. The teen singer is annoyed because her favorite foods, fried shrimp, omelet, and sweet iced tea, are unavailable. She vents her spleen by singing Geregetan, none other than her own song. That’s part of a Simpati Freedom commercial shown on television.

The ad, released by PT Telkomsel two weeks ago, has been boosting the sale of Simpati Freedom. Unlike other prepaid cards, Simpati and Kartu As, th