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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
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PNY 128GB Elite Class 10 U1 microSDHC Flash Memory Card for Mobile Devices - 100MB/s, Class 10, U1, V10, A1, Full HD, UHS-I, micro SD - Walmart.com
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Team Group 128GB Elite microSDXC UHS-I U3, V30, A1, 4K UHD Micro SD Card with SD Adapter, Speed Up to 100MB/s (TEAUSDX128GIV30A103) - Newegg.com
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Amazon.com: SanDisk 64GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-064G-GN6MA : Electronics
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Amazon.com: SanDisk 16GB Ultra microSDHC UHS-I Memory Card with Adapter - 98MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-016G-GN6MA : Electronics
![Engineer insists that there is no meaning of performance improvement in 'A2 standard correspondence' of microSD card - GIGAZINE Engineer insists that there is no meaning of performance improvement in 'A2 standard correspondence' of microSD card - GIGAZINE](https://i.gzn.jp/img/2019/07/23/a2-class-microsd-no-good/04.jpg)
Engineer insists that there is no meaning of performance improvement in 'A2 standard correspondence' of microSD card - GIGAZINE
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Amazon.com: SanDisk Ultra 128GB MicroSD XC Class 10 A1 UHS-1 Mobile Memory Card up to 98MB/s Read Speed (SDSQUAR-128G-GN6MN) with Dual Slot MemoryMarket MicroSD & SD Memory Card Reader : Electronics
SanDisk 64GB Ultra microSDXC UHS-1 Memory Card 2-Pack with Adapter - 120MB/s, C10, U1, Full HD, A1, Micro SD Card - Sam's Club
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