English Community

ThinkPad NotebooksThinkPad: X Series Laptops
All Forum Topics
Options

3 Posts

03-22-2020

US

6 Signins

0 Page Views

  • Posts: 3
  • Registered: ‎03-22-2020
  • Location: US
  • Views: 0
  • Message 1 of 8

X1C7 No sim tray visible is WWAN possible?

2020-03-22, 19:07 PM
I just bought a Carbon 7th Gen without WWAN capability, However I would really like to add the function. I have no problem installing the WWAN card and Antenna’s myself however I’m not sure if any of that will work without also having a SIM card. Is there any way to add a SIM card tray? Alternately, is it possible to have the SIM card plugged into an external port? I’ve read that this is no longer a supported function by Lenovo. Is this true? And is there workaround? Thanks
Reply
Options

12614 Posts

06-06-2011

RU

17678 Signins

174010 Page Views

  • Posts: 12614
  • Registered: ‎06-06-2011
  • Location: RU
  • Views: 174010
  • Message 2 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-22, 20:43 PM

Welcome to the Community

 

Very interesting plan. But I'm afraid it's impossible partially, with regard to external SIM card reader.

The SIM reader lanes are routed to the wwan modem connector directly, not via any bus. Whereas laptop port, assuming USB port, is connected to USB bus, then to one of the SoC' (or PCH') internal USB hub and the USB port. Isn't it? 

 

I know about external SIM reader for wwan modem in PCIe-mini form factor. I know about extension for micro/nano SIM reader with flat cable which is inserted  into the reader directly. But this isn't your way IMHO. 

 

What about Lenovo genuine SIM tray for X1C Gen7? Its p/n is 5M10V25491. I see this part on aliexpress but it's extremely overpriced. May be you'll find it elsewhere, for instance, Lenovo Authorized Service Providers.



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #Retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

Browser Search to find the answers in the Lenovo and Moto Community
Использование поисковых сервисов Интернет, чтобы найти ответы на форуме Lenovo & Moto

Reply
Options

3 Posts

03-22-2020

US

6 Signins

0 Page Views

  • Posts: 3
  • Registered: ‎03-22-2020
  • Location: US
  • Views: 0
  • Message 3 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-23, 15:54 PM
Thank you for the response! If no external then I suppose my question is there an internal sim reader I can add? The model is 20R1S04100 and i don't think that it comes with one. At least I cannot see it after opening up the laptop. I cant seem to find the full SIM card part anywhere. Part 5M10V25491 Is just the tray for the SIM card itself and that won’t work unless I have the reader too. Does the reader still exist on 20R1S04100? Obviously I could do Mobile hotspot but I Travel a bunch and would like the LTE capability to be built in.
Reply
Options

4868 Posts

04-25-2008

US

39382 Signins

741977 Page Views

  • Posts: 4868
  • Registered: ‎04-25-2008
  • Location: US
  • Views: 741977
  • Message 4 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-23, 19:16 PM

Hi Tequilacheeto, That model definitely doesn't have WWAN, nor does it have provisioning for it, so the best option is a USB WWAN dongle.

I don't work for Lenovo. I'm a crazy volunteer!
Using Browser Search To Find Answers in the Lenovo and Moto Communities.
Reply
Options

12614 Posts

06-06-2011

RU

17678 Signins

174010 Page Views

  • Posts: 12614
  • Registered: ‎06-06-2011
  • Location: RU
  • Views: 174010
  • Message 5 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-23, 21:13 PM

The model is 20R1S04100 and i don't think that it comes with one. At least I cannot see it after opening up the laptop.

...

Does the reader still exist on 20R1S04100?

 

Unfortunately, the parts list of X1C Gen7 doesn't allow to determine whether the nano SIM card reader soldered to the systemboard depending on the MTM.

Take a look at the image linked below, the bottom edge of the PCB. There is a nano SIM reader. 

Now take a look at the laptop rear side, its center. Is there a dummy at the reader' place (follow the laptop User Guide if you have some difficulty where it should be)? I'm afraid the surface of the case is smooth, w/out a dummy. It might mean the nano SIM reader is absent as well.

 

So, probably the best solution in your case is to use mobile LTE/WiFi router. It has some advantages in comparision with hotspot on the smart phone as well laptop USB dongle.

https://download.lenovo.com/Images/Parts/5B20W21729/5B20W21729_B.jpg



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #Retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

Browser Search to find the answers in the Lenovo and Moto Community
Использование поисковых сервисов Интернет, чтобы найти ответы на форуме Lenovo & Moto

Reply
Options

3 Posts

03-22-2020

US

6 Signins

0 Page Views

  • Posts: 3
  • Registered: ‎03-22-2020
  • Location: US
  • Views: 0
  • Message 6 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-24, 16:04 PM
Hi Bananaman, Do you mean something like these? https://www.amazon.com/Adapter-Express-Converter-Support-Wireless/dp/B07FJXNLLT https://www.amazon.com/Mini-PCI-Adapter-card-Module/dp/B01J705MTC Do you have any recommendations? I have never used these before. Thanks
Reply
Options

3 Posts

03-22-2020

US

6 Signins

0 Page Views

  • Posts: 3
  • Registered: ‎03-22-2020
  • Location: US
  • Views: 0
  • Message 7 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-24, 16:24 PM
X220forme, Ahh yes it seems as though there is no Nano sim module on the unit. I was hoping to install and internal one but perhaps a mobile unit is easier. Thanks for the help. Do you have any recommendations?
Reply
Options

12614 Posts

06-06-2011

RU

17678 Signins

174010 Page Views

  • Posts: 12614
  • Registered: ‎06-06-2011
  • Location: RU
  • Views: 174010
  • Message 8 of 8

Re:X1C7 No sim tray visible is WWAN possible?

2020-03-24, 19:35 PM

There are many featured reliable mobile LTE/WiFi routers on the market by a lot of manufacturers. Most of them are based on the chips of Huawei, Qualcomm etc.

Good catalog with their models, specs, reviews is below

https://www.4gltemall.com/4g-wireless-router.html

 

Fortunately, left column shows the manufacturers by their devices popularity. Choose from the top Huawei to Novatel, it's enough.

Don't pay an attention for the prices on that catalog, they aren't even manufacturer' recommendable, i.e.too high against the market.

 

The device choosing depends not only on its availability. Main feature you have to know is the LTE frequency bands set the device supports. They should match to the ones your LTE cellular operators work in. This task seems not easy for non professional, so, you might list the operators here, I'll try to reply about their LTE networks.

Next important features as you'll see are the DL/UL speed, LTE Category. In most cases mobile 150 mbps might be enough. Or you may need higher speed. Anyway, don't choose the devices which feature up to Cat.4 only. They are too old. Cat.6 and higher is right choice.

 

The battery capacity, the WiFi frequency and modes are other features. Usually these devices use their USB port for a power connection and battery charging only, i.e.not for a data transmission. This might be the only inconvenience.

Most devices could be easy unlocked, so cheaper operator's device might be one of the choice either.

 

As an example of good device - Alcatel Y900 / Y901. But again, take a look at the frequency bands firstly.



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #Retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

Browser Search to find the answers in the Lenovo and Moto Community
Использование поисковых сервисов Интернет, чтобы найти ответы на форуме Lenovo & Moto

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save