Russian mobile operator Megafon said the number of users for its LTE services grew by 57 percent in the Kaluga region in the first quarter of this year, Telecompaper reports. The operator offers more than 50 models of LTE-supporting devices in its branded shops in the region, where sales of white-label modems supporting 4G went up by 150 percent this period. The Меgаfоn M150-1, Меgаfоn M100-3 and Меgаfоn Е392 modems are being offered for the promotional rate of RUB 1 to subscribers.