By plane [edit]. The largest gateway for air travel is Frankfurt Main airport in central Germany, which offers connections to all continents and to most airports in Europe. Zurich, Munich, Vienna and Warsaw airports are a lot smaller but provide good connections to selected regional and intl. destinations.
To connect via Bluetooth, first turn on your phone or tablet's Bluetooth. When you use a new Bluetooth accessory, pair it with your phone or tablet. After pairing, devices can connect with each other automatically. Important: On a tablet that people share, each person can change the overall Bluetooth settings.
Bluetooth is another wireless technology you're probably familiar with. You can connect your devices--laptop, phone, printer, hands-free headsets, and smart devices (such as smart bathroom scales)--that are in close proximity to each other to transmit data and let your devices communicate without wires.