Team Group M131 Smart Dual Drive is so named because it can plug into both full sized USB and with the additional connector it can connect to Micro USB ports as well.  It's tiny size at 44 x 16.6 mm and 6.6g makes it easy to carry around, the largest size of 32GB may feel cramped for a PC but seems appropriate for use with a smartphone.  It is not the fastest USB drive out there but eTeknix saw it for sale at £7.19 so you are not paying extra for the convenience of the drive.  Check out their review here.

"The limited storage in mobile devices can be a real problem just as the fact that a touchscreen rarely is the optimal input device. Both these things might be a thing of the past if you invest in a Team Group M131 Smart Dual Drive with OTG support that. I’m taking a closer look at 16GB model of just this drive today."

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