Hi guys,
I'm a brazilian that sometimes goes to USA (once a year, maybe), and i have a t-mobile prepaid number with a pay by day plan. Basically i would like to refill only when i go to USA but without loosing my number. For example, when i have a trip to USA planned, i just refill it at the web site, (reactivate it if needed), use it and let it go untill i come back.
What do you sugest, is there any risk to lose my number or have to buy another SIM card as soon as i land at USA? Is there any fee to let it without usage?