It's difficult to say which one is "better" as it largely depends on your individual needs and preferences. Both the iPhone 6s Plus and the Huawei Nova 3i have their own strengths and weaknesses. The iPhone 6s Plus is an older device, but it still has a solid build quality, good camera, and runs iOS which is known for its user-friendly interface and frequent software updates. It also has a large, vibrant display and is known for its smooth performance. The Huawei Nova 3i, on the other hand, is a newer device with updated specifications. It has a larger display, a more powerful processor, and a larger battery compared to the iPhone 6s Plus. The Nova 3i also runs on Android, which offers more customization options than iOS, and has a good camera. Ultimately, the choice between the two will depend on whether you prefer the iOS ecosystem and a smaller, more compact device, or a larger screen and more powerful hardware with the flexibility of Android.