However, the feature is still missing as we type this. The same goes for Apple Maps: at the moment, the app requires an internet connection in order to provide turn-by-turn navigation. Thankfully, this doesn't mean that Android and iOS users can't get offline turn-by-turn navigation. In fact, there's a certain third-party app that's offering this right now for free.
After you download HERE Maps on your Android or iOS device (see the source links at the end of this article), you're almost ready to benefit from all of its features. In order to have access to offline turn-by-turn navigation, you first need to download maps for the areas that interest you - this is done from HERE Maps' main Menu. You can download maps for entire continents, entire countries, or just for particular states. Needless to say, maps for entire continents are very large (for example, North and Central America will occupy about 7 GB on your device). But, if you have enough free space and you're using a Wi-Fi connection, you should have no problems downloading all the maps you want.