Charged for 5G on Simple Choice plan?

Hello,

We have a SimpleChoice North America plan, and are happy with it. I have gotten a new phone with 5G. I am wondering how that works with the plan that doesn’t mention it.

1. Will I have access to 5G?
2. If I do, will it be capped?
3. Is there an additional cost?
4. If there’s a cap on 5G data and I meet it, will it cut me off or charge me overage?

Thanks!