iPhone 5s is doing random things

So last night my iPhone 5s randomly started opening to wallet and wouldn't stop; so I turned off my phone (not resetting it) and it worked for a few seconds but then it started opening random apps and it started typing what I didn't want to type. My phone is only about a year old more or less. It's not jail broken and it does have the newest update. Does anyone have an idea on what I should do?