Each time the customer crossed a border, they would automatically switch to their chosen roaming provider, without any further action on their part, while keeping the same number and subscriber identity module (SIM card).
Tarbija iga piiriületuse korral lülitatakse ta automaatselt ümber rändlusteenuse pakkujale, kelle ta on valinud; ta ei peaks selleks midagi tegema, kuni tal on sama number ja tellija identimise moodul (SIM-kaart).