Last time when I was in the USA, I got myself a new T-Mobile USA SIM card with a local phone number so I could call and have data.
There are a few pre-paid T-Mobile USA plans interesting, depending on how long you visit the USA:
Voice+Text+Data:
- Pay by the day USD 3/day for Unlimited Talk/Text/Data with the first 200 megabyte of data at 4G speed and the rest at 2G speed.
- Pay by the day USD 2/day for Unlimited Talk/Text/Data with the data at 2G speed. 2G speed is maxed at 128 kilobit/second.
- USD 50/month for 0.5 gigabyte of high-speed data and the rest at 2G speed. (works better for > 25 days of USD2/day).
- USD 60/month for 2.5 gigabyte of high-speed data and the rest at 2G speed. (works better for > 20 days of USD3/day).
- USD 70/month for unlimited high-speed data. (works better for > 23 days of USD2/day)
Data only:
- 0.5/1.0/2.5 gigabyte per day for USD 10/15/30.
- 0.5/2.5/4.5/6.5/8.5/10.5/12.5 gigabyte per month for USD 20/30/40/50/60/70/80.