Make sure your phone is using the latest updates. Updates to your phone protect your phone and should be installed as soon as possible. It also makes you put information and pictures into storage so that when something should happen with your iPhone, you have not lost everything.
There are different ways that you can improve how fast your messages are created. If the suggestion provided for a word by your iPhone isn't what you want to use, you can get rid of it by tapping any part of the phone's screen.
Hold your home button for six or more seconds to exit any app. Apps sometimes have a tendency to freeze. Don't lose your patience and start dismantling the phone in some frustrated attempt to shut the entire thing off. Just hold down your home button. This will force your iphone to exit the app.