Happily, the recent release of Apple’s iOS 7.1 update has addressed some of the location issues that were introduced with iOS 7 last fall.
Here is a step-by-step guide ofr how to update your iPhone, if you haven’t already.
Find the “Settings” option on your phone.
If you have not yet updated to iOS 7.1, it will look like this. If you’ve already updated, it will instead say “iOS 7.1 Your software is up to date.”