Check keyboard settings for emojis. Get the liquid screen protector, it's better. You can change the display settings for the invisishield glass screen protector if you don't want to get the liquid protector. You can change to a different type for the screenshot. Home button+power button and palm-swipe is your options I do believe. You can setup Notifications sounds and volume for each app and each contact, calls and text. Check one-handed operation setting for the big screen. Its awesome for using one hand. As far as the live focus, I can't help you their because I'm still learning this awesome camera. I'm still learning all the settings. Accessibility settings and advanced features have lots of options which may help as well. I'm happy with my S10+.