Looks like the Zwallet sync improvements are massive.
@hanh will you be pushing your improvements upstream in the librustzcash repo? GitHub - zcash/librustzcash: Rust-language assets for Zcash
@ChileBob 10hrs 15 minutes on Nighthawk and a Scan Failure is clearly not usable. And the basic Android One phone is a good test device to target & make Zcash useable on the lowest spec phones.