In the v0.1.3 release we added the option to mine using the Kawpow algorithm. This should enable devices more devices which have slightly less than 4GB VRAM to mine.

You can switch algorithms using the Algorithm button in the Wallet and Server settings screen. Note make sure you connect to the right pool when doing so, for example unmineable requires you to connect to kp.unmineable.com when mining using Kawpow, instead of the usual ethash.unmineable.com.

One more thing to note is that if you would like the app to run in the background uninterrupted, make sure you set it to not be battery optimised, as Android OS tends to shutdown background apps even when it’s plugged into power.

Finally this is a first release of the Kawpow algorithm, so expect bugs and check back for updates, but please do let me know how it goes on your systems to help solidify the code.