Look at the situation
Roaming is use of a UK service abroad; international calling is a call from the UK to another country. Record destination eligibility, allowance limits, fair use, activation and treatment outside the allowance.
Read the conditions
Aircraft, ships and satellite networks may fall outside ordinary terrestrial arrangements. For dual SIM, inspect the selected data line and automatic data switching. A travel data profile may not include normal voice service.
Choose the next question
Keep an offline copy of the terms and official support route. An old travel screenshot should not determine current entitlement. Ask the provider about the actual travel dates and account.
Keep official confirmation in view.
All explanations here are general guidance. Use your provider’s current instructions and service documents before taking action.
Official reading routes