[Luke Maxwell]

I have a trip planned to San Francisco at the end of January 2014. I would like to get a pre paid data and voice sim to use while I am out there but its very confusing looking at the different carrier options and phone compatibility.
Can anyone make a recommendation for me?
I will use data much more than voice.
Can I have the card shipped to the UK before I go or would I be better just getting one out there?
This link seems to provide some good references but I am not sure which would be best compatibility wise?
The Best Prepaid SIM Cards | PCMag.com

[Luke Maxwell]

Just to note my phone is not locked to any carrier.

[bluetroll]

If it is going to be for less than 10 days then get a T-Mobile prepaid $3/day plan.

If you are going for more than 10 days then go with the prepaid month plan.

Posted via CB10

[Luke Maxwell]

Thanks, i found this site useful for checking compatibility
Tracfone: BYOP

You pop you IMEI number in and the ZIP code where you want to use it and it confirms. It looks like i can just walk into a shop when I am there and get a month plan.