Activation dates & billing start

Build the four-date timeline

Record four dates separately: promised activation, provider technical activation, first usable service, and billing start. If equipment or number transfer was required, add those dates too.

Why an internal active flag may not settle liability

A provider may legitimately have a technical milestone that starts certain account processes. But if the consumer could not use the service because provisioning, equipment, authentication, number porting or engineer work remained incomplete, ask the provider to reconcile that with the contract and its billing basis.

Do not assume every day without use must be refunded; instead identify why service was unusable and who controlled the cause.

Delayed start can engage automatic compensation

For providers signed up to Ofcom’s Automatic Compensation Scheme, a delayed start of a new fixed broadband/landline service can trigger automatic compensation where the scheme conditions are met. From 1 April 2026 the rate is £6.46 for each calendar day of qualifying delay.

That is separate from correcting charges for service that was not supplied and from any other proven loss.

Mobile and number-port activation can be different

A mobile SIM may be technically active while the requested number port has not completed, or a handset may arrive after the account starts. Check the package/contract terms and exact promise. If a port is delayed, use the mobile-switching rules and keep both old and new provider records.

The promised start date is an evidential anchor

Keep the order confirmation or message that gives the committed activation date. For fixed broadband and landline providers signed up to Ofcom's Automatic Compensation Scheme, a delayed start of a new service can trigger daily automatic compensation where the scheme conditions are met. From 1 April 2026 the published rate is £6.46 for each calendar day of qualifying delay.

The scheme is not universal and exclusions can apply, so check whether the provider and service are covered. Even where the scheme does not apply, the promised date remains important evidence in a billing or contract-performance complaint.

“Active on our system” is not always the same as usable service

Ask what the provider's activation status actually records. It may mean the wholesale line completed, the account was provisioned, a SIM was enabled or a billing event fired. If the service could not in fact be used because essential equipment had not arrived, a number had not ported, authentication had failed or the line had not been installed, put that chronology to the provider.

Reconcile the first bill line by line

Identify the billing period, service start date, any advance charge, pro-rata amount, connection charge and credit. If the bill starts earlier than the date you could use the service, ask which contractual term and activation record the provider relies on. If it later applied a delay credit or automatic compensation, check that this is not being presented as though it automatically resolves a separate incorrect charge.

Number ports and mobile activation need their own timeline

A mobile SIM can be active before an old number finishes porting. Record temporary-number service, the requested port date, actual port time, periods when incoming or outgoing calls failed and when billing began. This helps distinguish a general activation dispute from a number-porting failure.

Evidence worth keeping