Do you see this possible? There are already phones with 12-16 GB of Ram in the market. One option I have seen is just wrap the current C++ program in an android package. I have also read this way will be very exhausting for the phone in terms of energy use, since the client is designed for computers. However I wonder if it is possible to port bitcoin core software to java (or kotlin, or swift or any native mobile language) so the client will work more efficiently in regards to the phone architecture and capabilities. For example allow the node to be turned off, and to work only when payments are made (when the app is being used). If my node had to sync the last few days/hours every time I open the app that would not be to bad right? The point is, if bitcoin was just a plug and play app (not the SPV or shitcoin bogged apps), then a lot more people would be using it (and running their own node btw). The home node running the core client is awesome and very robust for the network, but not too many people has the time or is willing to set it up.