Unable to install Android Tor aarch64 on Galaxy A10e (model SM-A102U)
I have tried both qa and non-qa .apk packages from the guardian project repo, in versions 9.0.4 and 9.5a4. They all cause the "App not installed" message. The phone should be able to take advantage of the 64-bit version in Android OS 9 -- it has ARM Cortex73 and Cortex53 processors, which both use the ARMv8-A architecture implementing the aarch64 instruction set.
The armv7 versions do install, so that's my workaround.