Are high-speed/high-capacity (A1, A2, U3) microSD cards worth it for Android? With Black Friday and Cyber Monday deals coming up, I (re)tested 5 of those and 2 older ones in 3 quite
What do the abbreviations A1 and A2 mean on SD cards?
A1 vs A2 SanDisk MicroSD Card: What's The Difference? - MyMemory Blog
SD Association Introduces Class A2 Application Performance Class, and UHS-III Standard Supporting Up to 624 MB/s - CNX Software