Millicom International Cellular (TIGO) reported Q2 earnings Thursday of $0.65 per diluted share, down from $4.05 a year earlier.
Three analysts polled by FactSet expected $0.59.
Revenue for the quarter ended June 30 was $2.18 billion, up from $1.37 billion a year earlier.
Three analysts polled by FactSet expected $2.13 billion.
The company's shares were up 5% in premarket activity.