If your phone has less than 4GB of RAM or a chip released before ~2015, it is almost certainly 32-bit. Notable examples:
Stop using 32 Bit phones and asking for emulators on those devices! Aethersx2 32 Bits Android
is an open-source PS2 emulator that still supports 32-bit ARMv7. It is much slower than AetherSX2 but receives regular updates. On a 32-bit device, Play! can run 2D RPGs at roughly 50% speed. It is available on the Play Store and will install directly on 32-bit devices without hacking. If your phone has less than 4GB of
Generally requires a powerful PC or high-end 64-bit Android device; it is not a viable solution for 32-bit hardware. Tips for Optimizing AetherSX2 (64-Bit Users) It is much slower than AetherSX2 but receives
Your phone uses an older CPU (like the Cortex-A7) that lacks 64-bit support.
You need an APK labeled aethersx2-alpha-1440-32bit.apk or aethersx2-v1.5-32bit-armv7.apk . If the file name contains arm64-v8a , it will not work on your 32-bit device.