Thursday, December 25, 2014

Internet Tethering in Nokia Lumia 920 (RM-820) in AT&T/Straight Talk

My Lumia 920 is AT&T version originally. It has been flashed to RM-821 HK version. However, it doesnt work with the Straight Talk 4G (ATT). That's why I try to flash back to RM-820 ATT firmware. By Murthy's law, I have no luck that I can get it back to ATT firmware but Rogers one. Anyway, it works with 4G now. By the way, It took me RMB200 to unlock in Taobao.

The next challenge is internet sharing. It seems that nokia worked with ATT which doesn't allow user to have tethering. However, there is a trick to get rid of it!

HOW TO:

Requirements (Pre-requisites)
Lumia 920 Phone (my one is with Rogers firmware) 
Straight Talk microSIM
Foreign microSIM (for me, CMHK)
download.png


Step-by-Step
Part I : 
- Use Access Point and the foreign SIM to configure tethering settings
- Insert foreign SIM card into phone and boot it up.
- Goto Settings->Access Point, launch the app, and verify that it applies the foreign settings (it should read 'active' underneath the Mobile Operator settings being used)
- Reboot the phone to ensure the settings 'stick'
- Shut down the phone.
- Remove the SIM card.

Part II: 
- Uninstall Access Point to keep the tethering settings. (If you don't do this and boot with the Straight Talk SIM, Access Point may apply a different set of tethering settings.)
- Boot the phone
- Go to settings->Time & Date
- Turn off Automatic Date, set the year to 2113 (or something ridiculous)
- Go to settings->Access Point. When you launch the app, it will request to uninstall because it has expired. Uninstall it.
- Restore the time & date settings, shut down the phone.

Part III: 
- Boot with the Straight Talk SIM and configure APN/MMS settings
- Insert the Straight Talk SIM card, boot phone
- Goto Settings->Cellular
- Configure & save internet settings with (this should be consistent w/ the Straight Talk website)
- APN: tfdata

Send yourself a picture MMS to apply the new MMS and data settings (this is important).
Go to Settings->internet sharing, turn on sharing.

and here we go~~~

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