Question about sim card and plans for the US.
So i'm living in Canada and might go to the US randomly, so i need a plan for when i go there.
Is there plans that you can charge a sim card with exemple 300 minutes, unlimited SMS, 3GB of data. And it stays on the card for unlimited time.
So like if i go to the US and i use 100 minutes and 1 GB, next time i go there i have 200 minutes left and 2 GB (please note that i could exemple go 2 days in April and the next time would be in janary 2018) so would like to keep whati paid for