As I have read in the reviews that the problems mainly of iPad users were, I thought, with mobile phones it will work well - far from it. There were more than strange effects on: - Load one or two Samsung S2 went flawlessly - Invite even one Samsung I9001 (ie a "minor" device) went MONTY - Even not if only a single port is used - The same effect with a second I9001 - so is probably not on the phone ... Have therefore returned the device. THANKS to Amazon for the truly fleet and hassle returns processing !!!