Hi @Citibadger,
Thank you for reaching out, and we'd be happy to clarify this for you.
If you join iD Mobile on a 1-month plan and later find that you need more data, you can look at upgrading your existing plan rather than leaving iD Mobile. However, iD Mobile doesn't support transferring your number internally between separate accounts, so you shouldn't take out a completely new contract if you want to keep your existing number.
The upgrade offers available to existing customers may differ from the offers advertised to new customers, so we can't guarantee that the same 80GB deal or price would be available when you upgrade.
If you decide you need more data, we'd recommend contacting our Sales Team via Live Chat or by calling 0800 049 0250. They'll be able to check your account and discuss the available upgrade options with you.
We hope this helps clarify your options.
Owethu