A:AnswerIf you have a Galaxy A21 yes this will work, the A21 has a SD slot and this card is compatible spec wise. If you have a Galaxy S21, then no the S21 does not have an SD card slot.
A:AnswerSure. But that's not the usual use. This is a U1 speed class device.The "Endurance" is so you can write a lot like in a security camera or dash cam. It is fast enough to record 1080P for me. If you want something faster, and the tablet can support it, get a U3 card. An example from Best Buy is:
https://www.bestbuy.com/site/sandisk-extreme-plus-64gb-microsdxc-uhs-i-memory-card/6282920.p?skuId=6282920
A little slower but still twice as fast as the Pro Endurance would be:
https://www.bestbuy.com/site/samsung-evo-plus-64gb-microsdxc-uhs-i-memory-card/5785404.p?skuId=5785404
A:AnswerYou have to find if the product has the ability to accept these types of memory cards.
They will generally be acceptable in any device that accepts those types.
A:AnswerThe Samsung Galaxy S6 does not have the ability to take SD cards which is quite a downfall.
The alternative is getting a Micro USB adapter that serves as an adapter. I have tried that and it is very annoying but at least the other side had a USB so it could be used as a USB Memory Drive.
