Lufthansa runs a micro-cell onboard the aircraft. You're connected to a single dedicated cell tower inside the airplane, not to stations on the ground. No hando

Lufthansa runs a micro-cell onboard the aircraft. You're connected to a single dedicated cell tower inside the airplane, not to stations on the ground. No handoffs involved. (The airplane's micro-cell will then have a backhaul over satellite or dedicated air-ground radio, just like in-flight wifi. Yes, there are handoffs there, but it's not via the normal cellular network - which is an important distinction.) This also means the cellphone's radio is transmitting at minimum power, since it's right next to the antenna for the micro-cell.