1 Message
Low Upload Speeds
Hello,
I am using an Arris S33 modem capable of achieving 2.5gbps symmetrical speeds, and approved for Xfinity higher than 40mbps upload speeds
I have called and used chat room multiple times and been told over and over that there is a problem on Xfinity's end and they will fix the issue.
Obviously, the issue has never been fixed. I am on the 2GB/300MB plan, and I am capped at 40.
I had a similar issue when they did the upgrade in my area where my plan was 2GB and I was still capped at 1.2GB - a few weeks later they removed my plan from being purchased and kept me at the same speed [contract].
What do I need to do to get the upload speeds I am paying for? Can Xfinity not just reprovision my modem to send the higher upload speeds?
BruceW
Gold Problem Solver
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26K Messages
2 months ago
The S33 is a "Recommended" device, but is not compatible with the new higher upload speeds. Only a few retail devices are. See the "Next Gen" list at the top of the "All Compatible Devices" link near the bottom of https://www.xfinity.com/support/devices (at the moment it points to https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2024.08.14%20Full%20List%20of%20Compatible%20Devices.pdf, but this changes from time to time).
Also see:
You need one of Comcast's newer rental gateways (XB6, XB7, XB8) or one of the few retail devices shown in the "Next Gen Speed Tier" group with an upload speed rating in the "All Compatible Devices" PDF:
The Reddit link lists the approved devices (although that list is out of date) as well as other requirements for faster upload speeds.
Realize that although Comcast calls some devices "Compatible" and some "Recommended", for all but a few devices those designations only mean "compatible/recommended for use with their Internet service", and not necessarily approved for the new upload speeds.
Comcast could make all of this much simpler and clearer, but they have chosen not to do so.
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XfinityRichard
Official Employee
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1.3K Messages
2 months ago
Hi there, @user_yp5bqe Thank you so much for reaching out regarding your speed concerns, since it's been a few days since you last posted, are you still in need of assistance? Please don't hesitate to reach out if you need further assistance.-Richard
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EG
Expert
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106.9K Messages
2 months ago
@user_tabee8
What is the exact make and model number of your modem ?
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