Multi Device is an additional service for an inOne mobile subscription and requires a special SIM for each additional device. Multi Device is available in Trackers & Sensors, Watches & Wearables and Smartphones & Tablets versions (categories). Once the additional device is activated for a specific category, its minimum service period will run until the end of the following month. You can then cancel this multi option category at any time, with monthly fees billed on a pro rata basis.
After 12 months without Multi Device option activation or SIM deactivation without re-activation within 12 months, the SIM is invalidated and can no longer be used.