Do you have the Kindle 2 Global Edition? The one with GSM Sim Card? Do you know how to disassemble your Kindle 2? If so, then you can install the Kindle Global Edition Sim Card to your iPad and it will work. If it works on the iPad 3G, it will work on the iPhone 4 as well. Read more below to find out how.
The Final Verdict: If you leave the settings the way it is, which is set it to Automatic and leave the APN settings as is, which is set to Broadband, it will be fine. However, the data provider will be at a snail GPRS Speed. Which is fine in the Kindle since it’s WAP based and can only surf Mobile Websites rather than the full version on the iPad. So, is it worth it? Maybe if the GPRS isn’t as slow as Jakarta, but if you are in the states, the GPRS speed is faster.
If I travel to Singapore and use it there, I haven’t test it yet, maybe the speed will be faster. Maybe.
Test it at your own risk, be sure to have a Micro Sim Card Adapter before you cut the GSM Chip from the Kindle 2 Global Edition, otherwise your Kindle will be wireless-less.