Whispernet Simcard change

rab77hp: Destroy the motherboard? I don't see that in this teardown you posted. Your teardown link is to a CDMA device. There is no SIM to extract. Yes, there is an empty spot that looks like a SIM socket can be added, but it is irrelevant because the CDMA radio won't have any use for it. You would need to be able to somehow put another radio on the board, and that is if the traces are even connected from the SIM socket location to the radio location anyway.

Generally hardware hacking works when generic, commodity hardware is used for single purpose (ie SIM cards for ebook downloading). On the Kindle this is custom hardware. It very specifically avoids competition with smart phone and tablet manufacturers and Whispernet with cell signal providers, yet still provides unlimited, forever book downloading. Basically for Amazon's custom variations on PDF files. Rab77hp provides the hardware answer for this, but I wanted to provide the “design” rational. This business model has to defeat any hardware hacking absolutely. My first thought when these came out was: how could I hack it to get free, unlimited texting usage? Kinda the mirror image what you're hoping to do. Neither be done, at least not without spending much more money and time than buying a new smartphone or tablet and paying for a cell signal provider.