Does the registered subscriber identify the person using the phone?¶

Not necessarily. The subscriber is the person or organisation associated with the mobile service, while the handset, SIM and account may be controlled by someone else.

Subscriber records provide a starting point¶

They can supply registration, billing, payment, activation and contact details and link a subscription to other services. Parents, employers, partners and businesses commonly hold subscriptions used by others; prepaid registration may also be limited. A number or SIM can move between devices.

Establish which handset and network credential used the subscription during the relevant event. Provider timing and identifiers turn a general registration link into a specific technical association.

Attribute the relevant-time user separately¶

Use possession, app and account activity, communications, location, witnesses, payments and patterns of use. Consider unauthorised or shared use where the evidence supports it, but do not dismiss a subscriber relationship that converges with control and conduct.

The subscriber may not know about every action through the service. Several people can use one device, so responsibility remains an evidential conclusion, not a provider field.