We tested this on a 128GB SanDisk A2 microSD card (A2 cards are supposed to be the best for apps) with a 7th-generation Fire HD 8, and random read speeds were three times slower than the internal ...
If your phone feels sluggish or takes longer to open apps, upgrading to one of the best Android phones for battery life is an option. A simpler (and cost-effective) solution might also do the trick: ...