On the first screen. The screen you can't delete is an app called maps. That's your gps. But I don't think it talks the directions, that'd be an app you'd need to download. Type gps on the app search bar and choose which one you require from there.
I use Motion X. It works exactly like a garmin or Tom Tom and only costs 9.99 per year. (unlike AT&T 9.99 per month) works GREAT!! And finds me cheap gas