Micro USB OTG Flash Drive Compatible Samsung Galaxy J3 Emerge Eclipse, Galaxy J7, T-Mobile REVVL, Fire Tablets Kindle eReaders, Fire HD 8 HD 10, Kindle Paperwhite USB C 3.0 Thumb Drive Memory Stick

The USB end is great but the other end is not compatible with my Fire tablet as indicated or any other technology I have owned in years. It is too big to fit into any modern android type devices. I do not recommend it to anyone unless the T-mobile, which I am not familiar with, uses a bigger port than standard equipment.

Item description says this is compatible with the Samsung galaxy j7. It is not! The piece is clearly too big. I have two Samsung galaxy j7's. It didn't fit either one.

Does not fit my J7