Google now offers official ways to run Gemma 4 on Android and iPhone using AI Edge Gallery for testing and LiteRT-LM for app development. Users should start with smaller models like E2B or E4B and ensure their device has enough memory and storage. On Android, AI Edge Gallery provides the easiest setup, while LiteRT-LM suits developers. On iPhone, users can test locally or choose server-based access. Performance depends on the device, so testing on real hardware and setting realistic expectations is important.
