Patch webOS Roam Control

Roam Control

Creating a "Roam Only" mode

By default, the Pre has no "Roam Only" mode. For fringe Sprint service areas, this can be very annoying, as the phone will tend to prefer a weak Sprint signal versus a strong Verizon/Other CDMA signal. We can enable this mode fairly easily.

Procedure

SSH in to rooted Pre Mount filesystem as r/w, navigate to phoneprefs folder and create a backup of current preflist-assistant.js

mount -o remount,rw /
cd /usr/palm/applications/com.palm.app.phoneprefs/app/controllers
cp preflist-assistant.js preflist-assistant.js.bak

Edit preflist-assistant.js

vi preflist-assistant.js

line 227 (WebOS 1.1 line 227), find:

{label : $L("Automatic"),value: "any"}

• and replace with:

{label : $L("Automatic"),value: "any"},
{label : $L("Roam Only"),value: "roamonly"}

line 1229-1234 (WebOS 1.1 lines 1229-1233) find:

		if(payload.extended.mode == 'any') {
			this.voiceRoamingModel.currentVoiceRoaming = "any";
			$('dataroamingrow').show();
			$('voiceRoamingRow').removeClassName('last');
		}

• and add below:

		else if(payload.extended.mode == 'roamonly') {
			this.voiceRoamingModel.currentVoiceRoaming = "roamonly";
			$('dataroamingrow').show();
			$('voiceRoamingRow').removeClassName('last');
		}

Mount the filesystem as r/o, reboot the phone and, from the dialer, go to Preferences and test out your new mode!

mount -o remount,ro /
reboot

Credit

w5mw

Scripting possibilities

You can use luna-send to change these settings from the command line. I run this bash (not sh) script from cron to change to roamonly whenever my phone is connected to my access point because my carrier's signal is poor where I live and calls are dropped in automatic mode.

#!/bin/bash
######## roam-at-home ############

MYSSID="put-your-ssid-here"

function ROAMONLY {
                   luna-send  palm://com.palm.telephony/roamModeSet  '{"mode" : roamonly }'
                  }
function ANY      {
                   luna-send  palm://com.palm.telephony/roamModeSet  '{"mode" : any }'
                  }

SSID=$( iwconfig eth0 | grep  ESSID | awk -F 'ESSID:"' '{print $2}' | awk -F '"' '{print $1}' )


if [ "$SSID" == "$MYSSID"  ];
then                              
ROAMONLY
else                    
ANY
fi
 

jjonez