What if I change the plan for a line in the middle of the cycle?

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	Understand the rules that apply when I change on a line the plan and/or the billing date in the middle of the billing cycle.

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I change the plan on a line

If you change the plan linked to a line in the middle of the billing cycle different logical rules apply:

1. The volume of the domestic usage is not recalculated but it is compared to the new domestic allowance of the new plan. If thresholds are already hit with the current domestic usage, the actions related to these thresholds are activated. (messages, disabling a line...)
   
   
2. As a new plan applies, news roaming zones apply too. So all roaming traffic that had been done before the plan change, into the current billing cycle is separated from the new roaming traffic that is done from the change of plan. The "old" data usage can be seen into the NO ZONE meter.
   You can identify this data usage as there is a little warning logo next to it.
   
   This is why a country can display twice.

I change the billing date on a line

If you change the plan linked to a line in the middle of the billing cycle different logical rules apply:

1. All volumes (domestic and roaming) are recalculated for the current billing cycle from the new billing date of the new plan. If thresholds are already hit with the current usage, the actions related to these thresholds are activated. (messages, disabling a line...)

I change both (billing date and a plan on a line)

If you change the plan and the billing date linked to a line in the middle of the billing cycle different logical rules apply:

1. All volumes (domestic and roaming) are recalculated for the current billing cycle from the new billing date of the new plan. If thresholds are already hit with the current usage, the actions related to these thresholds are activated. (messages, disabling a line...)
   
   
2. As a new plan applies, news roaming zones apply too. So all roaming traffic that had been done before the change of plan, into the current billing cycle is separated from the new roaming traffic that is done from the change of plan. The "old" data usage can be seen into the NO ZONE meter.
   You can identify this data usage as there is a little warning logo next to it. 
   
   This is why a country can display twice.