Looking for assistance with Ubiquiti Nano HD?
Looking for assistance with Ubiquiti Nano HD?
Hopefully someone here is familiar with the Ubnt Unifi stuff, as I am tearing my hair out over this one. I have a very simple home setup, just one access point, the nano HD. I have one SSID that is on both 2.4 GHz and 5 GHz. 5 GHz speeds are amazing, I can completely saturate my internet connection, which right now is 100 megabit. Using WiFiman for speed tests from iPhone 13 Pro as a test device and I get just 100 megabits per second both up and down. On 2.4 GHz though, we have some serious problems — with download speeds only. Uploads are fine, averaging around 40 megabit, but downloads are around 10 megabits per second! The other problem is that even with band steering turned on, my iPhone 13 Pro will be on the 5Ghz radio… and then if I set it down for 10 minutes, screen locked and not being used, and then unlock it and pick it back up and start to use it again, it will be on the 2.4 GHz radio…! I totally wouldn’t even care about this issue though, if the 2.4 GHz download speeds weren’t so god awful. I’ve tried changing the channel, I’ve tried making other setting adjustments, changing from 20 to 40 MHz spectrums, and nothing really changes. I’ve tried running the scan, even tried running the optimize thing, I’ve tried setting everything to auto, and there’s no difference. I see that the maximum PHY speed for the 2.4 GHz radio on the nano HD is 300 megabits per second, which is fine…but I’m getting nowhere near, like 1/5 of that that — even within 10 feet of the AP! I’ve tried switching to a MBP as a test device, since with that I can at least get more info about the wifi adapter (iOS really doesn’t expose anything at all in the way of information), and it says that in system profiler that the “transmit rate” for the wifi adapter is 58 megabits, even directly in front of the damned AP, within ten feet of it! I have around 15 2.4 GHz IOT devices that need internet, so I can’t just turn off / disable the 2.4 GHz radio either…I don’t care about their download speeds, I mean a washer and dryer doesn’t need to stream 4K Netflix, but yeah when my phones and laptop etc are using the 2.4 GHz radio, it’s absolutely horrid. I’m using all the latest firmwares and I did open a ticket with Ubnt, but they’re off on the weekends. If anyone can suggest anything I would really appreciate it, thank you.
How is it positioned? Is it installed on the ceiling at a central spot in the home? Are there other gadgets nearby that might be using the 2.4GHz band? Are there any barriers affecting the signal? Some devices struggle with frequency steering—turning it off might help. I recommend using separate SSIDs for 2.4GHz and 5GHz transmissions. This can prevent connection problems for certain IoT devices. Make sure your security settings are WPA2-PSK with AES encryption. As suggested by a spectrum analyzer, I hope this helps. Open WiFiman, take a screenshot of the 2.4GHz spectrum in your area, and keep the channel width at 40MHz unless space allows. Adjust the 5GHz power to high and 2.4GHz to medium manually.
The analyzer suggests this channel works best for 2.4 Ghz based on the graphs. However, I’ve tested all channels manually and seen no changes. My IoT devices function perfectly and stay connected without any problems. I’m sure there are no other interfering devices, as the mount is on a ceiling in the living room—a very small space.
From the client's point of view, run WiFiman on your phone or use WiFi Analyzer on your PC to get the analysis. Also, check whether you're using the global AP settings in UniFi or the AP-specific settings. Feel free to share a screenshot of those settings.
WiFiman appears to be limited to certain platforms, not working on iOS or Macs. However, it offers a speed test feature. There’s no radio scanning capability since I don’t have a PC or an Android phone for testing. Currently, I only have one AP active, with mesh disabled and AP-specific settings applied. Adjusting transmit power didn’t help, and I’ve tried everything.
Before moving forward, let’s check how the UniFi Controller is set up. If it’s always-on or hosted in the cloud, you can schedule optimizations. I’m uncertain about the process if you’re running it on a computer. As I’ve advised before, keep the 40MHz channel width to 20MHz on the 2.4GHz band. For the 2.4GHz frequency, choose “auto” for channel selection. Since you lack a client device capable of spectrum analysis, let UniFi handle it, though this may require some time. Once scans complete, the antenna might be offline—activate “channel optimization,” which performs scans late at night when activity is minimal.
Next, navigate to the main UniFi Network settings and select WiFi > Your-SSID. In the Advanced Configuration area, disable “band steering” and “UAPSD.” Turn off “BSS transition” and “fast roaming” if you only have one UniFi access point. Under Security, ensure WPA-2 is enabled and PMF is turned off. After applying these changes, re-provision the AP to confirm all settings are active. You can also perform a power cycle through UniFi.
Additionally, consider clearing the wireless network on your iPhone and reconnecting. Some devices may still hold remnants of previous WiFi profiles, so this will refresh the connection details.
I've already adjusted all previous settings without success. The 20Mhz channels on the 2Ghz radio remain unchanged, and transmit power isn't helping either. I'm currently using a Generation 1 cloud key, and I'm planning to upgrade to a dedicated server soon. I filed a support ticket with Ubiquiti, but I'm not very sure about their response. Instead, I've created a new SSID for 5Ghz only, which is performing well on my high-end Apple devices. However, the range in my backyard isn't great, and I suspect winter might reduce its impact. I won’t be spending much time outdoors in November or December here in New York. My main concern is that this particular nanoHD seems to behave poorly on the 2.4Ghz band—despite minimal interference in AP scans and consistently slower download speeds (about 10 Mbps) compared to 5GHz. I've reset it, re-provisioned, and even tried standalone mode without Unifi, but nothing changes. The 5GHz offers much faster speeds, especially for higher ping times. I'm considering swapping it for a newer 6E AP, though it's costly and I don't own any 6E devices right now. For now, I'll keep using this setup and hope Ubiquiti can provide more guidance.
Ubiquiti usually doesn’t provide direct assistance to customers. Sharing your thoughts on the Community Forum can connect you with others who’ve used similar products. For clarity: the UniFi Controller and nanoHD firmware are currently up to date? You might consider resetting the nanoHD, reconfiguring it, updating settings, and restarting it as a last resort. I’ve previously used the UAP-AC-Pro and UAP-AC-LR (released around the time of the nanoHD) without issues. I believed the nanoHD would perform better because it’s marketed as a WiFi 5 (Wi-Fi 2) device compared to the other UAP-AC models.