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Forum Discussion
CAX80-100NAS with Xfinity wifi texting failing
We have Xifinity internet and Xfinity mobile. The AX6000 was purchased by us and then connected to Xfinity.
Starting in December, both my wife and my Samsun Galaxy S21 phones started having issues with texting when on our home wifi.. Text messages won't send, They sit at queued or sending and won't receive we see them stuck at downloading. If we turn off the wifi and are just on the Xfinity mobile, the messages immediately go through.
The phones work just fine on any other wifi network.
Here are the details of the AX6000:
Hardware Version 1.01
Firmware Version V2.1.5.2
Cable Firmware Version V1.02.08
We have worked with Xfinity on the phones by resetting the network and even replacing the SIM cards.
The issue still persists.
Thinking it has to be something in the AX6000 since it seems to only be when we are connected to it via wifi.
Any one have any ideas?
38 Replies
The CAX80 gateway modem doesn't or shouldn't be filtering or blocking MMS or text messages. I've not seen this on mine ever.
Be sure to disable any MAC Address randomizers on phones and pads while at home:
https://community.netgear.com/t5/Nighthawk-App/NETGEAR-Mobile-Applications-and-Apple-Devices-FAQ/td-p/2220015/jump-to/first-unread-messageTry disabling the following and see:
Armor, Smart Parental Controls or Circle, Traffic Meter.What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and 40 to 48 channel on 5Ghz.
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-routerevent log and connection diagnostics attached.
event log attached
Changing phone to not random didn't work.
Ok, power levels are ok.
We see correctables and un-correctables that should be zeros here.
A couple of Criticals in the events log. Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/Try disabling the following and see:
Armor, Smart Parental Controls or Circle, Traffic Meter.What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and 40 to 48 channel on 5Ghz.
Has a factory reset and setup from scratch been performed yet with a wired PC and web browser?
https://kb.netgear.com/22697/How-do-I-install-my-NETGEAR-router-using-the-router-web-interface
Recommend setting the default DHCP IP address pool range to the following after applying and a factory reset: 192.168.#.100 to 192.168.#.200.
https://kb.netgear.com/24089/How-do-I-specify-the-pool-of-IP-addresses-assigned-by-my-Nighthawk-router
I'm 100% with you in the same boat... I have Xfinity Mobile for a carrier and I'm using a Samsung S23. I just recently got a Netgear CAX80 and I have it up and running with Comcast home internet. Works great and is 3 times faster than my old modem and router... but also cannot send or receive MMS picture text messages while connected to home WIFI. The minute I switch over to Cellular data it works and starts sending and receiving.
I've spent over 12 hours the last several days trouble shooting this. I've had a senior Comcast rep out to my home to trouble shoot signal and line quality and nothing could be found... I've had the modem provisioned and removed from my account and reconnected through Comcast. Nothing fixes it.
I currently have a Tier 2 escalation with Xfinity mobile involved and a Comcast corporate resolution specialist involved. Would LOVE to connect with to hopefully get this resolved for us and others. I've also completely reset my S23 phone to factory settings and wiped all data from my phone (hard reset), didn't fix the problem. I have tried literally everything and everyone at Comcast and Xfinity mobile has as well, although everyone is still working on the issue.
(I"m in Martinsburg, WV)
Any chance either of you two or anyone else on this ISP happen to try one of there gateway routers or a different Wi-Fi router?
The reason is that sending text messages in Wi-Fi on Android requires Wi-Fi calling enabled. And Wi-Fi calling depends on how the carrier handles the traffic. Sending text message with photo will be more challenge as it's size is larger. So it may be related to the Xfinity mobile.
All this looks to be something lots of others are experiencing as well with this ISP and this ISPs particular service:
I have another older Netgear router and I have a much older Arris modem and when those 2 are hooked up there is no issue with my Samsung S23 sending out MMS/photo text messages. Also the photos that I'm sending out are very small screenshots that are way less than 1mb in size.
Checking with the both of you to see if the following on the CAX80 has been checked?
Disable IPSec ALG from GUI (ADVANCED->WAN Setup-> Click "Disable IPSec ALG" checkbox) and give it a try.
Thank you.
I have made this change and will test for a few days. So far it looks good after 2 hours.
