3G Upgrade *COMPLETED* on 183927U 64GB *PICS INSIDE* [ Edited ]

[aj74]

1.  In order to use WWAN (Mobile Broadband) you need a WWAN card. 

      (The tablet had the slot for the WWAN card with all the cables but NO ACTUAL CARD)

2. The WWAN card can authenticate with the carrier of your choice in one of two ways:

    - By using (registering) the MAC address or MEID of the WWAN card.

      *this method is for CDMA carriers like Sprint (carriers that do not use sim cards)

   - By using SIM cards like AT&T or T-Mobile. (GSM Carriers)

So the presence of a SIM card slot doesnt guarantee that theres an actual WWAN card installed in your laptop or tablet.

(It just means that the laptop is *WWAN READY*)

Think of this as having a credit card swiping machine that has no phone line attached to it, you can swipe cards all day long but no transactions can actually be completed.

Lenovo mentioned on the ordering page of the TPT that it is WWAN READY but no models would have actual WWAN card in them until late October of this month.

[athreyaindyan]

thanks for the clarification....thats much appreciated. i dont think i have the ability to do what u did to install it so i will wait till oct!

[lixmal]

I've got one inside

[eKeith]

Do you know if the Android drivers for the F5521GW are already installed or just hopeful? I'm thinking of ordering one based on your test results...

[aj74]

I have to assume that the drivers are already included in the 3.1 build.

My assumption is based on this article: Ericsson mobile broadband module in Lenovo ThinkPad tablet

[egolfb]

How did you get the tablet open?

I have all the hardward but can't figure out how to open the tablet to insert the card.

Thank!!

[pghFL]

Full instructions here http://forums.lenovo.com/t5/ThinkPad-slate-tablets/3G-upgradable/td-p/515331/page/7

[user2394]

Honeycomb lists the internal storage as "internal_sd." Were you able to identify whether there's a removable SD card somewhere on the device? Or perhaps you have high resolution photos that show where the memory attaches?

[underclocker]

I just did the upgrade using a Lenovo branded Ericsson F5521gw WWAN adapter.  It works!  It will work on AT&T in the U.S.

NOTE: During a two hour phone support call, AT&T was able to enable a laptop data plan, but not a tablet data plan because the IMEI associated with the WWAN adapter shows a Lenovo ThinkPad.  This is an issue because there is a big cost difference between the laptop and tablet plans.  The next day I stopped by an AT&T store, problem solved in ten minutes.  I now have the post-paid 2GB @ $25 month plan on my ThinkPad Tablet.

[eKeith]

Congratulations underclocker!

What model TPT do you have and where did you get the WWAN card?

Thanks