iPhone 6 Messages app won't open
I really don't know why, but every time I try to open the messages app, it immediately force-quits. I have tried to the obvious; closing the app, turning on and off the phone, resetting the phone, and even hard resetting the phone. I even tried factory resetting the phone! I have tried to enter the messages app via the contacts app, facetime app, and phone app by clicking the little message bubble next to a contact's name. And still, nothing. I even tried to delete all text messages from the phone using my computer, (which i really, really didn't want to do). I really don't have time to go to the apple store, and I am going on a trip in a couple days and i need to be able to text my family about places to meet up, restaurants to go to, etc.. Somebody, please help!
iPhone 6, iOS 8.3