Can I call USA even though I dont have coverage

Nope, unless you have money in your wallet!

Chizz :))

Can I buy addons 2 call usa?

You sure can, add-on for calls or travel package including data.

Chizz :))

An add on for the US is $6 for 60 minutes. If you only intend to make the odd call, put money in your wallet and pay per use at $0.30 a minute. Choose whichever suits your needs.

You can buy a "Travel Add-On": 4$ for 60 minutes.

If it is for occasional calls, you can "pay as you go" with these rates:

• Data: $0.10 / MB
• Texts: $0,05 / text
• Calls: $0.25 / minute
but I think you need some money in your wallet to do so.

There is a lot of bugs in "Wallet" feature, if you decide to use it you better verify "Wallet" very often.

Yes you can, but as M said, there's some bugs on the wallet. Maybe safer to get a phone card for this time, you can find cheap ones for 1$ or 2$ at any convinience store.

Forget wallet. Just buy the addon, otherwise roaming will use all your wallet money.