No SD no problem, well sorta.

These existed for years. I used to use one back in 2015 with the Note back then.

The 3.1 speeds are awesome now though.
 
I've had a usb otg drive for years with dual sides micro usb/usb A, so I can transfer files easily between my phone and my or someone else's computer without having to actually connect my phone to a pc. I don't use much storage on it though, so when I went from a phone w a micro usb to a usb c I just got a cable so I didn't have to buy a new drive. I didn't need it to expand phone storage though.

https://www.amazon.com/gp/product/B07L749R9R/?tag=hawk-future-20&ascsubtag=UUacUvbUpU7043611
 

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