This card came with me for 2 years on 2 different smartphones (HTC Explorer and Wiko Stairway), good general performance and capacity 29,7Go. However overnight my Wiko Stairway began to eject and go back ceaselessly into the device until Show me "need to format" conclusion, dead card, also noted that the Micro SD adapter> SD never wanted to work with that card or even with another adapter, while another Micro-SD card operating with the same adapter, mystery, the Micro-SD card adapters do not like? In all cases 2-year lifespan for an SD card that remains quite low, in doubt on its reliability, I have now bought a Samsung Micro-SD card (the comparison between the two marks will be done in time ) really need to count on the service, lifetime warranty, but needs to be returned to the Czech Republic (with postage at your expense of course), so it is better to buy a new card rather than pay as much in shipping.