Terrible Wifi performance/jitter compared to other phones

ZinuristZinurist Level 1
edited September 2021 in ZenFone 8

The Wifi connection seems to be really unstable with the Zenfone 8. Sometimes it hangs for minutes, and in general it seems to be too slow.

I tested it with other phones, they have no problems and are much faster. That's why I think this a problem with the Zenfone specifically.

I made a simple speed test (with the ookla app), here are the results (all using the same Wifi network):


Phone | Download in Mbps | Upload in Mbps | Jitter in ms


Zenfone 8 | 18 | 36 | 90

Samsung Galaxy S8 | 83 | 42 | 36

iPhone 12 | 82 | 42 | 0.4


On some runs, the Zenfone would even only manage a speed of 0.2-0.3 Mbps (which is I guess when it "hangs").

I think the cause is Jitter. I tried disconnecting most other devices in the Wifi network, and I did manage a better run with 27 Mbps, but only once.

I really don't get why the Zenfone is consistently worse than even a 4 year old phone.



  • So I haven't experienced issues with WiFi,and I just ran side by side test with Samsung A71

    Zenfone 8 manages to get 8.55Mbps download while having slightly worse upload compared to the Samsung device

  • @Elmir I think there is an issue indicated in your screenshot linked to Zenfone 8 - down speed is the only indicator where Z8 is better...but it's not the most relevant in my view (whether you have 100Mbps or 20Mbps download speed...your browsing experience is pretty much the same however worse ping/jitter/packet loss will have much bigger impact on the browsing experience in general)

  • I should clarify, I don't mind if the download speeds aren't that great (even though it's weird that I rarely get more than 30 Mbps with the Z8). My real problem is that the connection sometimes drops out or gets too slow to even load websites. This happens regularily when I browse reddit. I ran the speed test multiple times again, and I still usually get anything from 0.2 to 25 Mbps, and I also had some of the tests just fail.

  • Uhm, mine looks fine :

  • Mine is fine all the time!

  • no problems here

  • It's fine for me also. I have got (down/up) 80/93mbps, jitter 1ms in speed test.

    Rooter is a TPlink archer ax20.

    I had bad connection experience before, and the solution was replacing the router.

  • Hi, I think it would be helpful if you mention what router you are using. It seems at times some devices don't behave well with some routers.

    I have a laptop which had a very similar issue with a relatively new router and the problem seems to be packet drop which used to vary in a way. The "hanging" part where things don't load is when the packet drop is very high.

    A driver update for the wifi card improved the issue but then changing the wifi card on the laptop to a newer one seemed to have solved it almost completely.


    1. As for testing packet drop try pinging the router gateway (generally something like 192.168.x.1 or anything else that you might have changed it to).
    2. Try connecting to a different router if possible and see if the problem persists.
    3. Take a note of the signal strength on the device. Some devices can connect and maintain connection to the router better than some others (not sure why)(my op3t says no internet on 5ghz when the connection on a pixel 4a on same 5ghz stays strong I'd have to guess weak transmitter or some prob coz of the aluminium body in the op3t).

  • me.0mby8me.0mby8 Level 1
    edited July 2021

    Forgot to mention. Do also check the negotiated link speed might be a issue there too. As for where you can check this go to the wifi settings and click on the network it's connected to and generally you'll find it under advanced.

    I'd advice you to run some download or load a huge site or file that it has the chance to negotiate to the higher speed if it is able to (ie. to see the maximum the device can negotiate with the router) this generally varies with signal strength to the router too (affected by distance, metal surfaces in between, walls, other em interferences and so on) (note: the devices/routers software itself can affect this). So try updating your router too if any update if available if not then no issues. (No issues as in oh well we can't do much about the router lets see if asus can do something about it or if asus can get the router company to make the changes needed or if they'll provide us with diagnostics which we can forward to the company or any other solution)

  • @me.0mby8 thanks, it does seem to not like the specific wifi AP I was using, it's a Fritz WLAN Repeater (negotiated speed of 144Mbps). I connected the phone to my main fritz box directly now (negotiated speed: 192Mbps), and it manages 20-40 Mbps (usually 20 when there's high jitter, else 40), roughly half of the other phones, but it looks much more stable at least.

    I'll have to see if I still have browsing problems.

    If anyone's curious, the specific models are Fritz WLAN Repeater 450E, and Fritz!Box 7590.

  • Do check if the repeater has any update available. Let's see if asus team will be able to do something about it or if you are feeling like you'd like to tinker then give openwrt a spin (https://openwrt.org/toh/avm/avm_fritz_wlan_repeater_450e) (you will be losing the fritz interface on the repeater and so if it has like some one click mesh function then that too but you'll probably be able to configure it manually on openwrt)

    Or maybe even try contacting the repeater company about it but I really have no idea how they respond for things such as this.

  • So as I said it was a bad signal area, Samsung was a few cm closer to the router. I also ran the tests sequentially so there might have been some interference when I was running it on the Zenfone 8. I have rerun the test multiple times and had no issues. I also have not experienced any wifi issues so far.

  • Hi @Zinurist,

    I just wanted to check if everything is working fine still since your latest post?

  • Hi I'm on an area with (very) good coverage and for me it works well, first screenshot is 4G, second is WiFi very close to the router (which then has fiber optics), and third same router but from another room.

  • Hi, it's a lot better since I switched to the other router instead of the Wifi repeater, no more connection problems anymore, and the speeds are also good when I'm close to the router. The repeater seems to have been the problem. You can close the issue if you want.

This discussion has been closed.