Pocket Wifi is not widely-known. But many travelers think that it is the best hotspot wifi Germany solution to avoid data roaming. A Portable Wifi allows you to have a stable WiFi access everywhere in Germany.
By using this device you can avoid any last minute calls or webpage check that may cost you a lot in voice or data roaming.
Hotspot wifi Germany : Guide through the best mobile internet solutions
Here are the main travel option to remain connected with internet in Germany