sagemcom fast 5688w internet going out or losing connection

I was able to fix all the restarts on the new routers (sagemcom) by performing a FACTORY RESET!

Just sharing my experience.

My router was set up at the store and when I returned home, I changed the SSID and PW to match my existing home internet.  I  was experiencing numerous restarts and lost connections daily.  I was close to returning the whole thing but really wanted this to work since I get 5G UC at 4 bars on all the phones.

I decided to perform the Factory reset done thru the bottom of the router.  Hooked it up to my existing router so I did not rename the SSID on the TM gateway.  Has been working 3 straight days without any restarts or lost connection. 

Hope this helps.

Great news. I just talked to a advanced tech support 100 miles up the road.

Yes the 192.168.12.1 has lost its functionality.

But I was missing the “MORE” on the bottom right corner of the TMobile iPhone app. It has both LTE and 5G metrics.

Given those numbers I can try and fine tune my location.

Simke wrote:

 

• After four days, new 5688 connection dropped each day for the first two (Dec 11, 12) and four times on Dec 13. Only remedy was a restart each time. After the second drop, called customer support, no solution to address the issue. After third drop, took gateway to local store. Rep swapped the SIM card. Back at home, no issues until the fourth drop. Called customer support, was instructed to confirm the SIM and IMEI numbers, unplug and leave the 5688 off while she performed a signal refresh, and turn it back on. She created a ticket for T-M engineers to address. No issues <24 hours since speaking with her and posting this.

 

I also confirmed the SIM and IMEI number for mine and they did a "signal refresh" still the same issue. The only thing I didn't do was get a new SIM card. Maybe I will mention that to them. Did they supply it or did you have to pay for it?

T-Mobile supplied the new SIM card. I took the 5688 to the store, explained the issue, and the rep swapped it out at no cost. Note that about four hours after I returned home and started the gateway (with the new SIM card installed), the connection dropped. This suggests a SIM card swap isn't a remedy, but perhaps it will work for you. During my call with customer support (after the drop), the rep confirmed my account was in order (correct SIM card and IMEI numbers) and performed the signal refresh.

Simke wrote:

T-Mobile supplied the new SIM card. I took the 5688 to the store, explained the issue, and the rep swapped it out at no cost. Note that about four hours after I returned home and started the gateway (with the new SIM card installed), the connection dropped. This suggests a SIM card swap isn't a remedy, but perhaps it will work for you. During my call with customer support (after the drop), the rep confirmed my account was in order (correct SIM card and IMEI numbers) and performed the signal refresh.

The last rep i talked to did the signal refresh after she confirmed my information was correct. I'll call them and mention getting a new SIM and trying a signal refresh again. thank you for your help

Mine went down as well after another signal refresh yesterday, but we also had bad weather so I'm going to give it another day and see how it does.

Hi, I see drops in the connection few times a day and perform a reset 1 time a day. what is the fix for this issue? is using our Router with sagemcom 5688w gateway resolve the issue? I've this device since 2 days. trial ends in 15days. any suggestions -should i call the helpdesk? thank you.

Mine (sagemcom) drops a few times a day because it's "powering up".  I don't think it's losing the connection and then rebooting, I think it's just rebooting.  As soon as my conference call drops I go look at the device and it says "powering up".  I'm getting a 4th device (1 arcadian, rest sagemcom) sent to me in as many weeks.

I've read other threads about the rebooting issue described by KimoWrex. It's unclear if this problem and connection drops occur mostly with the Sagemcom Fast 5688W, but I experienced drops with the Nokia. Update from my last post:

• Three 5688 drops yesterday (Dec 15), bringing the total to 11 this week (1 Dec 11, 1 Dec 12, 4 Dec 13, 2 Dec 14, 3 Dec 15).
• Called customer support immediately after the second drop and asked the rep to check diagnostics while the connection was down. Also noted the LTE signal was returning values while the 5G was dashed out (in the app, More > Advanced Cellular Metrics). She suggested the drop was due to "tower maintenance", a reason given during previous calls to support. She could not explain why said maintenance was causing the drop.
• She suggested 1) moving the gateway to a new location and 2) separating the bands on the gateway, implying that a 2.4 GHz network connection could tap into the LTE signal since it was still active (during the period when the 5G signal was down). Ended call.
• Moved the gateway to a new location despite the app’s placement assistant indicating the previous position was optimal.
• Separated the frequency bands by creating a second network. In the app, Network > select current network > change frequency band from Automatic to 5 GHz and follow the provided restart steps > once restarted, select Network again > select the purple and white plus sign > create a network name and password > change frequency band from Automatic to 2.4 GHz and follow provided restart steps.
• Immediately after the third drop, selected the newly-created 2.4 GHz network on a laptop, hoping it would pick up the LTE signal during the 5G drop (as explained in the second point above). Nothing. Zero connection. Profanity. Frustration.

I have now exhausted all remedies after three gateways, 11 connection drops in five days, colourful language, SIM and IMEI confirmations, signal refreshes, expletives, gateway repositioning, frequency band separation, irritation and profanity, and imagined NASA-approved protocols. The only reason for the drops I've received is tower maintenance, and when I asked the rep for a completion date of said maintenance, she didn't know. Tremendous. While I can't verify this, I've read other threads that, when combined with statements by the reps I've spoken to this week, suggest that network congestion is the issue. When this occurs, phone connections are prioritized over home internet bandwidth. Again, I can't verify this, but it seems logical.

Conclusion in my case: T-Mobile 5G Home Internet is outstanding… when it works. 300+ Mbps download… when it works. Convenience and ease of use… when it works. When it doesn't, you're on your own. I will now look for a new provider and hope that anyone reading my posts has a better outcome than I have. Happy Holidays.

same issue for me drops ...