Without knowledge in Mainburg it is a desaster for Cars... 2 many 1way streets and many detours. Small villages around make your phone cry to get connectivity. We did it with vodafone and D1. LTE only in Mainburg, Au and Wolnzach. We took 4,5 hours by doing everything.
Not worth it if u travel from long distances only 4 that Mozambique...U will be frustrated often!