My phone can't find my current location?
The GPS information used by waze originates from the built-in GPS component and not Cell-id or WiFi based signals, as they are sometimes used in other applications (and as such enable users to view a map indoors, for example). The reason we rely on a real GPS signal is because for turn-by-turn navigation, only a real GPS signal from a satellite is sufficient, whereas Cell-id gives only proximity-based information which is insufficient for our application. As such, to use waze there is a need to be in an open area with clear view of the sky (or at least near a window), in order to get a GPS signal that will enable you to use waze for commuting purposes.

On the top status bar of waze you will notice a small GPS icon that resembles a small satellite dish. When first launching waze this icon is gray, indicating your location is unknown.
Later this icon will turn orange (approximate location) and then green (location known). The icon must turn green in order to report events and receive turn-by-turn navigation.

The first time you launch waze, it might take up to 5-10 minutes for the icon to turn green. Each time after that, it should take no more than 1 minute.

If you can't seem to get a position fix, please close waze and verify that your GPS antenna is turned on. On some phones you have an option to turn the GPS antenna off to preserve battery.

On Android phones: go to settings / Security & Location / make sure that 'Enable GPS satellites' is checked
On iPhone: go to settings / general settings / make sure 'Location Services' is toggled to ON.