How do I get my GPS to work again on my iPhone?
How do I get my gps to work again it stutters and sputters I’ve tried everything and it still won’t work right
[Re-Titled by Moderator]
For the GPS "piece" to work need need a decent view of the sky.
For Maps to work ... you'll need a decent data connection to dynamically download the maps.
What sort of problems are you having?
See if anything here helps:
View maps on iPhone - Apple Support