Unable to tether via USB

[#1]

I have recently upgraded my phone to the Sony Ericsson Xperia arc. I am trying  to use USB tethering to share the phones internet connection with my pc. I have  updated the firm ware for the phone and installed all the latest windows updates  on my pc. I have downloaded and installed the latest version of pc companion. on  my pc I am running windows 7 64 bit os. I have updated the drivers showing for  the Sony Ericsson network device. When I connect the phone and select USB  tethering in the phones network settings my pc detects the phone and shows a  network device with internet access. However I seem unable to access the  internet. I have investigated the properties shown for the phone modem device  shown in the windows network settings. This is showing that the phone is using  ispv4 but is not able to use idpv6. I tried using the USB tethering with the  windows firewall on and off. I have also tried switching USB development  features on and off. I am now completely at a loss as to what I need to do to  get tethering to work. It is the primary reason for me getting this phone. Are  you able to offer any solutions or options?  I have attached a screen capture of my settings.  I am starting to panic a bit as I have signed up to a very expensive two year contract with unlimited data basically so I could do this.  Please help.

[#2]

Can you check something for me. I think I know what your problem is.

When you enable the USB tetheting function, you should see a blue tethering symbol at the top left of your phone screen and also the 3G/H symbol which is next to the signal strength bars.

If the 3G/H symbol dissappears when you enable the USB tethering, it means that the version of you phone's firmware has disabled this from running.

Then you have two options :

1. Use a tethering app like PDA Net

https://market.android.com/details?id=com.pn.helper&feature=search_result

2. Perform a manual firmware reflash. Note this an unofficial method and any operator version of your phone's firmware will be lost. Usually a good thing. e.g if they hobble to tethering function.

Refer to this post.

http://talk.sonyericsson.com/thread/19735

I had a problem where the tethering function was not working. The phone connect to the network but no internet access. Discovered what I told you above.

Did a manual firmware flash, and sure enough the tethering function worked.

[#3]

Ok well it seems I have somewhat got this sorted.

In response to the last post; yes the 3g symbol remains.  I tried downloading the PDA net app, installed it and yet it still did not work.

As a last attempt I thought well its a Google android phone, it says its connected to the internet perhaps it will work with Google chrome browser as apose to IE.  I installed google chrome which gave an error message saying (in the chrome browser) go to Option, under the bonnet and change the proxy settings.  This is getting to the limit of my technical understanding but after changing some of these settings it now seems to be working.  (really really well streaming HD)  This is using the PDA net app suggested in the previous post.

Many thanks apc_user

[#4]

You are welcome. Glad it worked for you.

[Karthik72]

Hey hi,

     I too face similar issue in my mobile. I am unable to switch the USB thether option in my mobile.I tried many times, but still the option is Unchecked... Can you pls help me on this..!:smileysad: