smartphones_setup_instructions.md

We provide the fundamental steps to set up some of the smartphones we use in our experiment.

The crucial requirement is to have adb installed on the computer! (Windows also requires to install the adb drivers)

Huawei Nexus 6 & 6P

To configure the phone in order to use AT Commands the following steps are required:

1. Unlock Developer options in phone settings and enable USB debugging.

2. Connect the phone to the computer and run the following commands (it can be done both on Linux and Windows):

   • adb reboot fastboot
   • fastboot oem config bootmode bp-tools (Nexus 6)
   • fastboot oem enable-bp-tools (Nexus 6P)
   • fastboot reboot

   This will set the property sys.usb.config to diag,serial_smd,rmnet_ipa,adb and allow the userd to send AT commands through the AT interface.

Windows might requires to install/reinstall some of the drivers. Check the environment with the following steps:

1. On Control Panel > Hardware and Sound > Device and Printers, double click Nexus 6 (Nexus 6P) icon. The properties window should open.

2. On the Hardware panel of the property window the following devices should be listed:

   • Android Composite ADB Interface
   • Qualcomm HS-USB Diagnostics
   • Qualcomm HS-USB Modem
   • Qualcomm Wireless HS-USB Ethernet Adapter
   • USB Composite Devide

   Qualcomm Modem device is the one needed to use AT Commands. On the device's properties, Modem panel we can read which Port is used (e.g. COM3) and the Maximum Port Speed.

   If Qualcomm Modem is not listed and only Nexus 6 (Nexus 6P) is listed, one problem could be Windows drivers. In this case it is necessary to unistall the drivers for all the Nexus 6 (Nexus 6P) devices listed (more then one could be listed). Once the previous step is completed, reconnect the phone to the computer and wait for the drivers to be automtically installed.