I thought the idea of a memory with normal and Micro USB port, was a good idea. In principle it is that too. Only this memory to use with the fewest smartphone. Too bad. On my Acer Liquid S1 is nothing, not even with the appropriate software can be downloaded for free in PlayStore. The app works just fine, but does not recognize the Memory Stick. Samsung and Sony Tablets recognize him. Therefore, it is highly advisable, before the sale on the said side of SanDisk check compatibility. The stick is quick, despite USB.2 He is surprisingly small and the micro USB connector is very well protected, the protective cover is firmly drum. 3 stars I admit, because the advertising statement is simply not true if you read one thinks that all phones can work with it. But is not the case.