Based on past experience with T-Mobile I would check this out before buying it. I'm not sure the data will work on a non-T-Mobile phone. And if it does work on your own phone you might only get EDGE speed. 

Mike

-----Original Message-----
From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Dhanushka Samarakoon
Sent: Thursday, December 08, 2011 10:07 AM
To: [log in to unmask]
Subject: Re: [CODE4LIB] Availability of data-enabled temporary SIM cards

This is the best non-contract data plan I have seen so far.
5GB for $30 on T-mobile
http://www.walmart.com/ip/Tmobile-30-Wireless-Airtime-Card/15443357

A SIM card should be around $7

On Thu, Dec 8, 2011 at 4:45 AM, Kåre Fiedler Christiansen <
[log in to unmask]> wrote:

> Hi all,
>
> Sorry for being semi-off-topic, but obviously you're the right bunch of
> people to know this...
>
> We're a bunch of Danes visiting the Code4Lib conference in Seattle. But
> the prospect of a full week being offline on my trusted Android phone is
> scary. And the price of international data roaming is simply scary.
>
> So I was wondering if any US carriers are selling data-enabled SIM cards,
> at a price that would be reasonable for a week's usage, and which are also
> available for visiting tourists?
>
> Any input welcome. Thanks.
>
> Best,
>   Kåre
>