Hey, During Malta I was finally able to debug the bad voice call quality that affected some people when using Ubuntu Touch on Nexus 4.
It turns out that the issue seems to happen when the modem firmware from Android 4.3 is used, and it got fixed after I manually upgraded the firmware using the blobs from the Android 4.4 image. So for anyone having voice call quality issues, make sure you're also using the latest modem firmware from Android. You can check the version you got by doing the following: 1 - Reboot into bootloader: 'adb reboot bootloader' or hold volume down + power. 2 - Check the version id for the bootloader and baseband entries: Bootloader version: makoz30d Baseband version: m9615a-cefwmazm-2.0.1700.98 If you have an older version, that means your bootloader and firmware are originally from an older Android base version. To update to the 4.4.2 based one: 1 - Download and unpack https://dl.google.com/dl/android/aosp/occam-kot49h-factory-02e344de.tgz 2 - Reboot into bootloader 3 - Flash both the bootloader and the modem firmware: $ fastboot flash bootloader bootloader-mako-makoz30d.img $ fastboot reboot-bootloader $ fastboot flash radio radio-mako-m9615a-cefwmazm-2.0.1700.98.img $ fastboot reboot Unfortunately we're unable to automatically push such updates to our users as we're not able to distribute such binaries, so that's why you need to manually update them. Let me know if you have any issue when flashing such files, or if the voice call quality issue is still around even after updating the modem firmware. Thanks, -- Ricardo Salveti de Araujo -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
