Keith wants to restore his iPhone back to factory settings without losing his health data. Leo says there are layers of resetting in the iPhone, and it's hard to erase it entirely. But he's had issues with his Apple Watch and getting text messages and wants to try starting over. Leo says to go into settings and start with the lowest level of resetting. He should start with "Reset Network Settings." If that doesn't fix it, he can try the "Reset All Settings." Only the "Erase All Content and Settings" will delete his health data.