using phone in USA for 3 weeks - whats the best option?

[usa-ok]

hi im going to the USA next month for 3 weeks and im on a simple pay and go sim. however im unsure of the bolt ons and big bundles thing. i dont use my phone alot which is why im on pay and go. i was wondering when going to usa next month is there a one off big bundle/bolt on i can get to cover me for international texts/ calls in the usa? im unsure of the tariffs meaning on the site- plus it keeps crashing :/. i also dont want to start a contract thing... i just want something that will be a one off to cover me for the 3 weeks. any help is appreciated as im finding the website hard to navigate... thank you

[Bambino]

@usa-ok See this guide first: USA - Roaming with O2 - O2 Community

If you don't find the answers you're looking for, come back and ask again.

[Enlli]

If you want to make calls in the USA you need 4G Calling and that is not available on PAYG