SANDISK - Ultra 64GB USB 3.1, USB Type-C Flash Drive - Black

Open the other side - it is regular USB-A. This is a Dual adapter. One side for phone with USB-C & other side with USB-A for laptop.

Hi This usb drive is designed to work with computers or devices which can accept a USB TYPE A or C connector Your Samsung S8 active cellphone can only accept microSD card with upto 256 GB storage limit Hope this helps

Yes

I bought this USB drive for my Samsung Galaxy tablet s3, it works very well with the C type USB port. I'm not sure it will work with the iPhone 8 and X because I don't know they still using Lightning port or changed to type C port yet, but SanDisk do make a C type iXpand drive for Apple device.

No you need a micro USB connection this is a USB C connection . Here's a link to the proper device. https://www.bestbuy.com/site/sandisk-ultra-dual-64gb-micro-usb-usb-3-0-type-a-flash-drive-black/7016092.p?skuId=7016092