SMARTY, explained
Context for the brand. Questions for the actual service. Independent information, with official links.
A little background
SMARTY is a UK mobile brand associated with Three. It has its own customer journey and plan terms even where the underlying infrastructure is shared.
SIMs, phones and monthly arrangements
SMARTY describes rolling monthly SIM plans and data-only options. The service does not need to follow the same billing model as a financed handset contract. Inspect the renewal day, payment method and the selected allowance.
PAYG and renewal: check the model
A prepaid rolling plan can still renew automatically. Find the dashboard control for renewal and check whether there is a difference between pausing the plan and ending the account. Do not assume a traditional voucher balance is the funding model.
The physical or digital SIM
SMARTY advertises physical SIM and eSIM options. Check compatibility and follow the dashboard or app instructions for the actual account. Moving to eSIM does not itself move the mobile number to another provider.
The billing conversation
For SMARTY, start with the statement date and the line it describes. Mark the regular service, any device component and optional activity separately. If an item is unclear, ask for its period, category and supporting explanation. Use SMARTY dashboard through the genuine provider site. Keep a written reference rather than relying on memory of a call.
A number move is its own task
If moving a single UK number away from SMARTY, the general PAC route is to text PAC to 65075. Review the expiry and leaving information, then give a valid code to the next provider. A multi-number account may need an online or telephone request. For a legacy service or a non-mobile product, establish the correct process first. Read our number-transfer guide for the full distinction.
Reception needs a location
Three host infrastructure is background context, not a guarantee of reception in a particular building. Check SMARTY’s current coverage and disruption information. Record the affected function, phone, location and time if use repeatedly fails. Authorised technical investigation stays with the provider; our team cannot alter a line.
Travel and international use
Its travel allowance and fair-use conditions should be checked for the destination and plan. Data-only service needs particular attention if calls or texts are expected. A roaming option does not create a voice feature on a data-only product.
Home internet and connected equipment
SMARTY has data-only SIM plans. Before using one for a tablet or router, confirm the equipment, allowance and hotspot conditions. Local reception and building layout will affect the experience.
Upgrading, leaving and future changes
Keep the contract summary for the exact SMARTY service. Before a change, ask whether the term restarts, a device obligation continues or a linked benefit ends. Read any scheduled annual adjustment and its effective date in the agreement. Confirm which subscriptions survive a cancellation, and review the last statement after the service ends.
Read at the source
Check the current provider information for your own line. Research checked 29 October 2026.