He said M Vision expects total sales revenue will reach 1.6 billion baht over the four-day event, with over 600,000 visitors, about the same as last year's figures. An industry source who requested anonymity said the local retail smartphone market contracted 20% in the first quarter this year because of weak consumer purchasing power. Pairoj Thavornsapanant, assistant managing director of TG Cellular World, a leading mobile distributor, is optimistic the local smartphone market will grow by 20% to 25 million units this year as mobile oper- ators are moving aggressively to migrate their customers to 4G services. He said smartphone makers focusing on selling high-end handsets priced over 15,000 baht would survive.