Nice, thank you. My introduction to this subject was through Harald Welte's work on OpenMoko (i still have an old one lying around somewhere) but after the exp

Nice, thank you. My introduction to this subject was through Harald Welte's work on OpenMoko (i still have an old one lying around somewhere) but after the explosion of iPhones/Android phones have not kept apace. Here is Harald's old but still informative presentation Anatomy of smartphone hardware: Dissecting contemporary cellphone hardware - https://media.ccc.de/v/25c3-3008-en-anatomy_of_smartphone_hardware https://media.ccc.de/v/25c3-3008-en-anatomy_of_smartphone_ha... Also you might find Roger Ye's old book Embedded Programming with Android: Bringing Up an Android System from Scratch pretty useful.