04-24-2012 08:36 AM
I have a T420S 4174. I'm afraid if I put it in will get stuck or something?
How do I put it in, is ther some kind of sim card holder or something? Or does it just slide in?
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04-24-2012 09:25 AM - edited 04-24-2012 09:30 AM
Remove the battery. You should find the SIM-card slot there.
On the blue latch you will see, how to attach the SIM card. Don't remve the blue latch -you'll need it to remove the SIM-card from the slot.
See userguide page 123
04-24-2012 10:42 AM
In referenced user guide above, SIM replacement/placement is on Page 141, well illustrated. The blue tab is not a latch - simply a pull out tab. See the pictures in the User Guide.
04-24-2012 11:18 AM
Guys there is no tab to pull out? Can someone please help me...
04-24-2012 06:24 PM - edited 04-24-2012 06:30 PM
The SIM card slot can be, as Mornsgrans mentioned, found in the section where the battery is. Remove the battery, and look for this blue plastic flap that looks like this jutting out (I'm using a T420 too.)
Pic 1: Where the SIM card slot is
Gently pull on the blue flap towards you so that the dummy white card will come out.
Pic 2: Removing the dummy card.
Then, insert your SIM card into the slot (make sure that you do so according to the orientation shown on the flap) and you are done!
Hope the above helped!
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04-25-2012 04:39 AM - edited 04-25-2012 04:41 AM
If there is no blue flap/latch there won't be a SIM-card holder and so your laptop has no wireless WAN.
Concerning your Thinkpad type number:
Please let us know the next three chars right of "Type 4174-"
05-12-2012 10:25 AM
The T420s has newer mechanism where you just insert the sim card. Works fine for me right now.
Thanks for your help though
08-12-2012 01:56 AM - edited 08-13-2012 07:50 AM
In June 2012 I bought a notebook Lenovo ThinkPad T420i (M/T: 4236IF7) with dummy SIM (Subscriber Identification Module) card. By replacing this dummy SIM with real card I can establish a wireless WAN (Wide Area Network) connections.
»User Guide, ThinkPad T420 and T420i«, English edition, on page 142 - 143 includes instructions to replace the SIM card: turn off the computer, disconnect the AC power adapter and all cables, close the computer display and turn it over, remove the battery and find the SIM card slot inside the open battery compartment. Gently pull the tab (e.g. blue plastic flap) extending from the slot until it stops. The card comes partway out of the slot. Now you can remove the card. Insertion of the SIM card goes the opposite way: put SIM card over the tab (e.g. blue plastic flap) and push all together into the slot, then insert the battery, attach all cables etc. Original pictures from the Guide:
The method and description to remove and insert SIM card together with the blue plastic flap is absolutely inappropriate and worthless, because after some application the tab (blue plastic flap) would unglue or even break !
After consulting a Service Provider I was advised to change the motherboard! Price 500 - 600 €. Of course, there is no guarantee that the tab will not unglue in the future.
The service center for repairing photo cameras (sic !) has a simple and cheap solution: whet the upper side of the SIM card slot (plastic!) for about 2-3 mm. See the result:
However an »amateur whetting« is not the right way. The world-wide computer company IBM – Lenovo should find a better way. My personal opinion as a user is:
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