Hello @teeconway57 ,
Welcome to the community!
For Android phones, the Galaxy Note 10+ would be the largest screen size at a whopping 6.8" followed by the S20+ at 6.7". The Note 10 is 6.3"
For Apple Device the iPhone 11 Pro Max would be the largest screen size at 6.5" followed by the iPhone XR.
You do not necessarily need a bigger screen, on Android devices you can increase the display and font size you can usually find those options in Settings->Accessibility