Soon I will be upgrading from a legacy plan to a new sim only plan, as the current one is rolling over since Oct 2017, and isn't fit for purpose.
This new plan includes a generous data allowance and one smart benefit, however I forgot to ask the upgrades team this question when I upgraded.
For the extras (roaming pass, TNT sports etc) is there a fixed period when they have to be activated, or can they be swapped as needed?
The reason behind the question is that I travel frequently, and usually we book the tickets, roughly 1.5 weeks before travelling to accommodate the various school and university holidays.
TIA
