I've recently been told by work Information Services that I cannot use my work laptop with T-Mobile Home Internet. Here is there response to my support request. T-Mobile's primary service called "5G Broadband" is not true wire-to-site broadband. While Cisco AnyConnect can work over 5G and other wireless connections, MTS does not recommend its usage unless absolutely necessary, and if you utilize a phone line such as Cisco Jabber call quality cannot be guaranteed.The issue is that while 5G can provide broadband level speeds and bandwidth wireless solutions, such as 5G, have a higher tolerance for "packet loss." Packet loss is when individual pieces of data are dropped/lost during transmission. For most applications this is a minimal issue that 5G speeds may render unnoticeable, but a live connection, such as the AnyConnect VPN or Voice Over IP phone services, will experience connection degradation or be completely disconnected forcing you to reconnect.This is not an issue MTS can mitigate. For this reason the only recommended Internet service types are fully wired based connections including DSL, Broadband, Cable, and Fiber Optic services. Does anyone have a suggestion on a way to work around this issue? It does not need to be perfect, but being able to work from home is essential, and if I can't use TMHI to do that… it would be a deal-breaker for me.

Hi Everyone, This is something I posted in another T-Mobile forum a while back. After putting some research into this, I believe I have found a solution (at least one that worked for me).PLEASE NOTE: PART OF MY SOLUTION IS USING MY OWN WIRELESS ROUTER ATTACHED VIA ETHERNET CABLE TO THE BACK OF MY HOTSPOT MODEM. THE INSTRUCTIONS I LEFT BELOW WILL NOT BE OF MUCH USE TO YOU IF YOU ARE NOT USING A WIRELESS ROUTER.This does not require much tech-savviness as I found what I needed from a YouTube video and a little googling on how to access the settings I needed, which I'll post a link to at the end of this. Basically, it's the MTU (Maximum Transmission Unit) settings that T-Mobile uses. You don't really have to know much about this other than how to find out how to change it, either on your computer or on your wireless router (if using a wireless connection). Most internet providers set their MTU size at 1500. This is more-or-less a standard most in the industry follow. From what I found, T-Mobile sets their MTU size at 1450. I'm not going to go into explanation on how this works; just know this is the problem. This tiny difference seems inconsequential, but can make or break your VPN connection. Unfortunately, it's on us as the customers to find our own solution(s) to this problem. This YouTube link gave me the information on how to check my MTU settings and change them on a Windows PC. This is a solution specifically for if you want to only change the MTU Size on individual PC's in your home. Ultimately, I did not change my MTU Size on my laptop, but the part of the video that helped me find the MTU Size was key to figuring this whole thing out. The link will take you directly a few seconds right before the spot you need to pay attention at begins: I'm not a Mac user and am not experienced with using them, but this is a link for all y'all Apple fanatics that I found while I was searching for a reason for this problem. It was the first article I came across that set me on the path to figuring out how to change my MTU setting. Hope it helps:https://amithkumarg.medium.com/resolved-t-mobile-home-internet-vpn-issue-2f5ca594c23eAnd, lastly, I use a TP-Link Wireless router. This link is for TP-Link device owners and shows you how to change the MTU Size. There's no way I can find links to all the different types out there. However every brand's settings are easily searched on Google, so good hunting to you and good luck: https://www.tp-link.com/us/support/faq/1134/I hope this helps some people. My issue is (self)resolved.

This exact same thing happened to me out of nowhere today; I've had everything working flawlessly since I switched to tmobile over a month ago from xfinity and now it will not accept my work's vpn. I will cancel my service immediately if this cannot be fixed; this can cost me my job.

This is insanely frustrating. I can't do half my job unless I sit in a cafe with broadband access or work from a friend's house. But the part that is infuriating is every time I call T-Mobile, I get different answers from different people. Call 1: "Can't do anything for ya. Sorry." Call 2: "We can get you to a higher tier of support who will be able to help if you can get us your VPN Settings from your IT Department." Call 3: "None of what call 2 is true. Sorry to say it, but they lied to you. There is no higher tier of support."I bet if I called a 4th time, I'd get another completely different answer. I had this totally fixed by changing the MTU size on my router and now, even changing it directly on my laptop makes NO difference. There really needs to be a fix for this. If I had access to any other ISP that wasn't worse than this, I'd drop this service instantly. Unfortunately, I'm stuck since I live in a rural area. I'll stop complaining now.

I can't believe T-Mobile support just flat out told me that their internet service is incompatible with a VPN! How can they advertise that I can use this for work at home with multiple high speed streams, but just conveniently neglect to let me know I can't use a VPN! No suggestions for solutions, he just offered to cancel my service immediately!

My company uses Cisco AnyConnect VPN. I've been having all the same issues mentioned in this thread and gone down the IT rabbit hole trying to remedy this issue. Finally found a knowledgeable T-Mobile technician that explained if personal or work VPN or systems are operating on IPv4 then you need to go into your T-Mobile home internet app > select network > click "+" to add network > name network > create password > select 2.4 GHz band > select WPA/WPA2 > WPA "TKIP & AES" > then save the new network and connect. Worked out my VPN issues and my security cameras are working now.

Unable to use T-Mobile Home Internet with work VPN, any suggestions?

mrmuffy
Newbie Caller
Hace 9 meses
2024-02-28: After working with my work IT folks for a month, finding out about this known issue with T-mobile/Global Protect and reading this thread, I called T-Mobile to report the problem and potentially threaten to leave the service. Service rep Keisha found some information and said it had been fixed two days ago. She had me unplug the combination modem/router from the wall, wait a couple of minutes while she did something, then plug it back in. Once it was up, she had me try the VPN again, and IT WORKED. So I recommend calling T-Mobile and telling them what you read here.
Rogueplayer
Transmission Trainee
Hace 9 meses
mrmuffy wrote:

2024-02-28: After working with my work IT folks for a month, finding out about this known issue with T-mobile/Global Protect and reading this thread, I called T-Mobile to report the problem and potentially threaten to leave the service. Service rep Keisha found some information and said it had been fixed two days ago. She had me unplug the combination modem/router from the wall, wait a couple of minutes while she did something, then plug it back in. Once it was up, she had me try the VPN again, and IT WORKED. So I recommend calling T-Mobile and telling them what you read here.

Thank you for posting on here today. I just got off the phone with a repair rep and he supposedly did the same for me. We are connected, but I'll reserve judgment for the next few days. I've got a Verizon gateway on the way and after all this, if it's working correctly, I won't have to take it out of the box.

Thanks again.
sterlinglp
Newbie Caller
Hace 9 meses
I'm glad I found this thread. As of the same date everyone here is having issues, I am as well.

I use these under a business account for multiple locations and I currently have 3 deployed.
As of the same date of you issues, end of January 2024, two of the lines started having problems. VPN does not work to connect to critical cable systems I need to maintain, and one line is throttled to 0.01mbps with low usage, and I've tried the SIM in enterprise cell modems and other tmo boxes, same throttling.

So since late Jan 2024, lines are being throttled with low usage for no reason and OVPN, Wireguard, and oither VPNs no longer work.

Also issues with streaming services for no reason.

I guess I'm switching away. I wondered if $55/month unlimited on a cell network was too good to be true. I liked how it was impervious to utility and power failures with a battery backup but I'll have to use other carriers with an enterprise modem instead.
RemoteAwesomene
Newbie Caller
Hace 9 meses
I just spoke with Louis at support - there seems to have been an update pushed out on 2/27/2024 (he couldn't confirm), and all I had to do is reset my modem/router and I am able to use my VPN again. I have AT&T Global Network Client VPN and the Sagemcom model modem/router.
Hopefully this saves others some agravation.
ccc1138
Newbie Caller
Hace 9 meses
I got the the white device, the
https://www.t-mobile.com/support/home-internet/5g-gateway-g4ar
That didn’t solve my VPN Issue. My work uses Cisco-Meraki
¿Tienes alguna idea?
4TheMiddle
Newbie Caller
Hace 3 meses
If you like the Inseego FX3100, here is a wall mount 3D print you might find handy.

https://www.printables.com/model/819909-cradle-for-inseego-fx2000-and-fx3100
Elmojomo
Newbie Caller
Hace 3 meses
IDR wrote:

Elmojomo wrote:

I have the InseeGo FX3100 gateway/router.

Oh no! I wish I saw this comment before calling up support. They are sending me this device. Has there been any improvements since you last post?

Actually, yes!
I was able to get pretty much all my issues resolved. I now have a solid 'VPN' connection to my office, and I'm a fairly happy customer. I didn't report back my results here, since my setup and situation is so niche, I was afraid that my solution would just end up confusing the issue for those who are having other problems.
In my case, the resolution was related to how Tailscale was communicating between its nodes, and the fact that my pfsense firewall/gateway was not properly configured to allow direct connections. Once I got that sorted out (using this link, in case anyone is in this same boat), I now have a pretty fast, stable connection to my office server. I don't have any way to perform actual speed tests to see if it's quite as fast as theoretically possible, but all my files transfer just fine, so I'm done digging.
I hope your experience with the FX3100 goes well. I'm pretty happy with the device. I like that I have full admin access, and can enable IP passthrough very easily, while maintaining GUI access. This allows me to use the FX3100 as a simple modem, and connect it to my firewall/gateway for all other network and security tasks within my facility.
jomegatau
Newbie Caller
Hace 2 años
Try tailscale as your VPN. I have a TM Nokia modem in from of a linksys EA8300 router running openwrt which is running tailscale. Openwrt takes a little learning curve but tailscale is dead easy to create your own VPN without any monthly fee. The t - mobile model does not have an IPV4 address and with tailscale subnet routing your don't need one to browse your home network or remotely view your cameras.
https://openwrt.org/docs/guide-user/services/vpn/tailscale/start

Works like a champ.
AJ1234
Newbie Caller
Hace 10 meses
@jsteele-az my issue started as soon as I switched ISP to T-Mobile. I have noticed there are still some little quirks when connected to my company VPN. Sometimes I have to log off the internet then re-establish the connection for it to work. So far it's still working good. The T-Mobile rep said if your distance isn't too far that you could also try the 5 GHz network but range is limited, so the closer the better.
SmellyPillow
Roaming Rookie
Hace 10 meses
Rmk wrote:

Same.

Ive called in twice trying to get some kind of resolution and in both cases were told I should try contacting my works help desk.…

Will be spending my weekend shopping new ISPs I guess.

when I called she said the engineers were working on it. gave me a ticket number for this problem, larger issue not just my call was my impression. it was 76229955. I guess I'll give it the weekend, everything but VPN works. New ISP if not fixed by Monday I guess.

If you have t-mobile for your phone you can turn it into a hotspot if you have unlimited data. Ive been working like that, ironically the hotspot works just fine and is faster. kind of amazing.