Tethering Motorola Defy. Internet over USB on Windows and Linux

I purchased Motorola Defy Android mobile phone running Android 2.2.2, ( the later Defy+ runs Android 2.3). the phone supports 3G hotspot overĀ  WIFI. But for some reason my phone kept crashing after few minutes of use of the hot spot feature. So I wanted to setup the tethering over USB. I use Kubuntu and Windows . Here, I wil explain how to tether your Motorola Defy phone using USB. The same should work on DEFY+, though I have not tested on it. Both the approaches doesnot require the phone to be rooted. And I use Airtel 3G in India

Tether on Windows:
Follow the instruction here. https://forums.motorola.com/posts/bc40b2fbdc Its stratigh forward and works for DEFY.

Tether on Linux:
This involves litle bit of tinkering. Follow the instructions in this article http://www.humans-enabled.com/2009/12/how-to-tether-your-verizon-droid-as.html . The original article itself is capable of tethering DEFY. I have altered couple of steps to suit me and am sharing it here.

Step 4:
my rule for DEFY is
SUBSYSTEM==”usb”, SYSFS{“22b8:428c”}==”22b8″, MODE=”0666″,

Step 10:
If you are using DEFY with android 2.2.2 , then don’t bother to download the Azilink with Android 2.3 patch. Download the latest release from the Azilink site itself.
cd ~
mkdir azilink
cd azilink
wget http://azilink.googlecode.com/files/azilink-2.0.2.apk
adb install -r azilink-2.0.2.apk
wget http://azilink.googlecode.com/files/azilink.ovpn

Step 11 & 12:
I had merged steps 11& 12 as follows
vi start_modem

#Type in the text below, then hit ZZ to save
adb forward tcp:41927 tcp:41927
sudo echo “domain lan” > /etc/resolv.conf
sudo echo “search lan” >> /etc/resolv.conf
sudo echo “nameserver 192.168.56.1” >> /etc/resolv.conf
sudo openvpn –config azilink.ovpn

Follow the rest of the steps from the original article. Azilink About page quotes ” since this program doesnot run as root it cannot forward ICMP-based ping requests. To simulate this all pings are translated internally into UDP pings. Unfortunately, many hosts do not respond to UDP ping requests.” So don’t be surprised if you cannot ping your host but still able to use the internet.

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