Tip 1: Pin text conversations
Open Messages
Tap the button with three dots (...) in the top right-hand corner of the screen
Click Edit Pins
Find the Conversations that you want to pin and select the Pin icon to the right side of it
The Conversation will now appear at the top of your screen
Tip 2: Add Contacts as favorites to the Phone
Open the Phone app
Select "Favorites" in the bottom left
Click "+" in the top left
Choose Contacts to add to your favorites
Tip 3: Add Photos to Favorites
Open an individual picture in the Photos app
Click the "❤" symbol in the bottom left
The photo is now added to your Favorites folder, which you can find under Albums