Practical Mobile Forensics - Third Edition

Other techniques

All of the previously mentioned techniques and the commercial tools available prove to be useful to the forensic examiner trying to get access to the data on an Android device. However, there could be situations where none of these techniques work. To obtain a complete physical image of the device, techniques such as chip-off and JTAG may be required when commercial and open source solutions fail. A short description of these techniques is included here.

While the chip-off technique removes the memory chip from a circuit and tries to read it, the JTAG technique involves probing the JTAG Test Access Ports (TAPs) and soldering connectors to the JTAG ports in order to read data from the device memory. The chip-off technique ...