Yes @cxc that’s what is being said.
Add ons are only for UK use and being unlimited you probably couldn’t buy one anyway.
Even though you’re on an unlimited plan, if you’re using your phone in the USA you’d be on their international tariff.
For you to call FROM the USA it currently costs:
Roaming | Pay monthly | Pay-as-you-go**** |
---|
Calls to UK* | £1.68 | £1.68 |
Calls to United States (USA)* | £1.68 | £1.68 |
Calls received* | £1.50 | £1.50 |
Texts to United States (USA)** | £0.42 | £0.42 |
Texts to UK** | £0.42 | £0.42 |
Picture message (MMS) sent** | £0.60 | £0.60 |
Internet and Data (per MB)*** | £0.30 | £0.30 |
* Price per minute
** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.
*** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB
**** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.
Prices shown include VAT where applicable.
HTH