Backup Voice Mail Messages from Android Device

# Getting voice mails of An Android Phone

adb shell
su
find /data/data -iname "*voicemail*"

cd /data/data/com.android.providers.contacts/app_voicemail-data/

# file on Android devices might not detect the mp3 file as mp3 and just state "data"
file *

# Move files to "sdcard"/user storage to be pulled from phone
mkdir /sdcard/voicemail
file *|grep data|cut -d\: -f1|while read f;do cp -v $f /sdcard/voicemail/;done

# on desktop
adb pull /sdcard/voicemail .
cd voicemail

# Check and make sure they are mp3 files
file *

# rename to mp3
for f in voicemail*;do mv "$f" "$f.mp3";done