How to make long messages be sent as concatenated SMS on the Fx0

README.md

With the original Japanese firmware on the Fx0, messages with more than 160 characters are sent as MMS. See instructions below concerning how to make long messages be sent as concatenated SMS.

1. Stop SMS app on device.

2. Create backup of app:

   $ adb root
   restarting adbd as root
   $ adb shell
   root@madai:/ # mount -o remount,rw /system
   root@madai:/ # cd /system/b2g/webapps/sms.gaiamobile.org
   root@madai:/ # cp application.zip application.zip.orig
   root@madai:/ # exit
   

3. Download app:

   $ mkdir sms.gaiamobile.org
   $ cd sms.gaiamobile.org
   $ adb pull /system/b2g/webapps/sms.gaiamobile.org/application.zip
   $ unzip application.zip
   

4. Change maxConcatenatedMessages from 1 to 10 in:

   gaia_build_defer_index.js
   js/settings.js
   

5. Upload updated app:

   $ zip -f application.zip gaia_build_defer_index.js js/settings.js
   $ adb push application.zip /system/b2g/webapps/sms.gaiamobile.org
   

   Find the updated application.zip in this repository.

6. Start app on device and send a sufficiently long message as a test.

Credits go to cutol for discovering that “JP also has maxConcatenated msgs set at 1, where in stock its 10.”

application.zip