When you change your plan or upgrade, your bill might look a little different. Here’s why:
How is my bill calculated after I change plan or upgrade?
As with most networks, we bill your monthly line rental in advance. If you change your plan or upgrade, you’ll have paid for a whole month on your old plan, but only used it for part of the month. The cost for both your old and new plan is calculated on a pro-rata basis (so you’ll only pay for the days you used each plan).
You’ll keep the total allowances (like data, minutes, and texts) from your old plan and also get the pro-rated allowances from your new plan starting immediately.
Example.

Let’s say your billing date is on the 18th, so in October you were billed in advance for the period 18th October to 17th November. On the 31st October you decide to change your plan or upgrade.
On your next bill on 18th November these changes will show:
- We have already billed you for the number of days on your old plan (31st October to 17th November) so we’ll credit that back.
- We will then charge you for the number of days on your new plan (31st October to 17th November).
- We will then charge you in advance as normal for the next month (18th November to 17th December).
- Then from 18th December you will just see your new plan and charges.
Any out-of-plan charges will also show on your bill. This could mean the bill following your upgrade might be a little higher than usual.
I’ve got a question about my bill. What should I do?
If you have questions about specific charges on your bill, simply contact us.