Flutter usually packs apk, and will pack all abi architectures (such as: arm64-v8a, armeabi-v7a, x86_64) together, and the apk will be very large; if you know the abi of the target model, you can choose to split the package, The size of the apk package will be much smaller.
flutter build apk
Split the abi architecture (such as: arm64-v8a, armeabi-v7a, x86_64), and package them separately to generate 3 apk files.
flutter build apk --split-per-abi
