== Old format support dropped? == 

 Has support for some file formats been dropped, either by software updates or by not being supported on a newer Kindle? Support for the original Mobipocket format and PalmDoc was dropped from the Android app when PDF support was added. The app would still show the books and would open them but would not display the content of Mobi files. Those would show a location -1 of 1. PalmDoc files would either show location -1 of 1 or would display a few pages then scrambled text, sometimes freezing the device/phone or crashing the app. Books in the newer Mobi format, released around the time Amazon bought Mobipocket and generated by the last version of the Mobipocket software for Windows (and programs such as Calibre) still work with the Kindle Android app.