Samsung's flagship Galaxy S series phones are the most popular for GCam mods. However, compatibility varies significantly between models using a Qualcomm Snapdragon processor and those using Samsung's in-house Exynos processor. For the best chance of success, you'll want a device with a processor, such as the Galaxy S23 Ultra, S24 Ultra, or S25. GCam can work on Exynos variants, but you may encounter stability issues, and features like Night Sight or auxiliary lenses may not function.