ThinkPad released in 2011. This version of the T420 is thicker then the T420s and lacks motherboard level USB 3.0 hardware. The T420i is very similar, but not quite the same.

5 Questions View all

Sim card slot problem

My lenovo thinkpad t420 has a sim card slot under the battery but it does work

is it whether the slot is fake or there is other problems with it

Answered! View the answer I have this problem too

Is this a good question?

Score 0
Add a comment
Deck the Halls
With tools and Fix Kits

1 Answer

Chosen Solution


Many business class laptops have SIM slots under the battery, but they only work if there's a special PCIe WWAN to connect to the carrier installed. You can check if yours has that component if you follow thisvideo and open your laptop up.

Thisis how the part looks like, if you'd like to get yourself one.

Was this answer helpful?

Score 2


On the T420, it's under the bottom RAM door. The SIM slot is also located there. On the X series, it's under the keyboard or palmrest.

On the Dells the SIM slot is under the battery. Look at my guide to see what I'm talking about: T420 RAM.


Add a comment

Add your answer

pnshuti60 will be eternally grateful.
View Statistics:

Past 24 Hours: 2

Past 7 Days: 14

Past 30 Days: 45

All Time: 100