Total 3 Galaxy S5 Mini I bought at amaazon, tried and all 3 returned. 1 device: * Device could two intact SD card (from Samsung) neither read nor describe. Unit 2: * Device freezes and only by removing / inserting the battery, it can be started again. * While Dwnload crashes the S5 from mini. Unit 3: * Unit turns itself off and back on. These deficiencies relate to the basic functions of a mobile phone.