Can I get a US phone card just for my stay of 1 month is US?

You can use it for just one month. Unfortunately, unless you keep paying, the SIM card will be deactivated 60 days after your plan expires and your account cancelled, so you can’t use it next year. You would just need to get a new SIM card when you return.

Hello Srocha, we're here to help you with needing a U.S.number.

As our Ace @sandblaster stated, we would recommend an AT&T Prepaid account. You can visit an AT&T once you get to the United States. Please review AT&T Prepaid plans. 

Feel free to reach back out if you have any other questions or concerns.

Thank you for visiting AT&T Community Forums!

Carlton, AT&T Community Specialist 

Yes, it’s called prepaid. Plans are here:

https://att.com/prepaid

Thanks sandblaster! I saw it but was afraid i had to have it for 12 month

and, i can use it now and than only use it some month before?

thanks very much. this is not so good for me but will see my options.

BR

Thanks. I am already in USA. Please advice on a solution, the cheapest one since i will have to buy another card when i come back and do u deliver it at home?

I have an android phone Xiaomi 9 and an i phone. However, if u have a cheap phone i may buy one.

If possible my Whatsapp and mobile number is +351913995404.

BR

@Srocha Please remove your personal information, this is a public forum. No one from ATT will call you. Your iPhone should work fine but your Xiaomi will not work on ATT.

Hello Srocha, let's get you pointed in the right direction for your concerns.

We recommend for you to visit an AT&T Retail store. They will be able to make sure your device is eligible on the AT&T network. You will be able to leave the store with a U.S. number.

Thank you for visiting AT&T Community Forums!

Carlton, AT&T Community Specialist