S20FE 5GHz WiFi speed issues

Search This thread

srikrishna.cj

New member
May 26, 2019
3
1
Hi guys. I am also facing the same utterly slow wifi issue. I noticed this issue when I was watching Netflix, it was buffing a lot. I thought it's a poor internet connection at first. Then I downloaded the torrent to my NAS and tried to copy the movie to my phone. That's when I confirmed the wifi issue. S20 FE 5g is downloading only at 10 to 20 Mbps speed where my k20 pro downloading at 300 to 400 Mbps speed. S20 FE speed is really slow here. For the first few Mins, it is downloading at full speed, after that wifi drops to a max of 20 Mbps. Today I tried to do a deep benchmark. I thought it was due to thermal throttling. I installed the iperf server in my ubuntu-desktop, iperf client in my S20 FE. I ran the bandwidth test for about 20 mins. Where my phone reached 60c within 10 mins. But surprisingly through the test wifi speed was mostly at 650mbps. Few times it dropped to 300mbps. I immediately tried to copy files from NAS to S20 20, again speed was very slow, maxing at 20 Mbps. Once I restart the phone, it is again coping very fast for few mins. So I think it is related to a software issue may be like prioritising and de-prioritising background and foreground apps. I have attached the screenshots. I will do even more testing and keep you guys posted.

Update 1: After tried to copy the files from local NAS to phone speed was dropped to 20 Mbps. out of curiosity I tired to run the same IPerf Test one more time now Iperf speed is also drop to 50 Mbps.
Screenshot_20211007-112445_Video Player.jpg
Screenshot_20211007-113148_Solid Explorer.jpg
 
Last edited:
  • Like
Reactions: Sushubh

chromaniac

Member
Oct 2, 2021
24
4
Gurgaon, India
I am due to get my replacement unit sometime today. I am keeping expectations low because this issue is more or less confirmed to be present in this particular batch/software iteration.

I am more concerned about what to do after getting the unit. Live with it hoping that a future software update might fix this throttling? Or get back to dealing with Amazon support to get a refund.

I really like the phone otherwise and there is no other model currently that I am interested in. S21 FE might arrive in arrive in January based on the rumors and Samsung would have absurd pricing at launch if it does launch and come to India. I suppose I can manage with S10 Lite for another 5-6 months. But this might truly be the last Snapdragon FE phone to come to the market.
 

chromaniac

Member
Oct 2, 2021
24
4
Gurgaon, India
Got the replacement unit. Took less than 10 minutes to see that wifi behavior is same on it. Amazon is again asking me to go through tech visit process before refund can be considered. Next couple of days are again going to be annoying. Factory fitted screen guard has two visible bubbles so that does not help as well. They really need to improve the quality checks on these units being assembled in India.
 

Tejas tedi

Senior Member
Feb 22, 2014
304
167
Bangalore
Amazon Fire TV
Xiaomi Mi Pad
Got the replacement unit. Took less than 10 minutes to see that wifi behavior is same on it. Amazon is again asking me to go through tech visit process before refund can be considered. Next couple of days are again going to be annoying. Factory fitted screen guard has two visible bubbles so that does not help as well. They really need to improve the quality checks on these units being assembled in India.
Same here got replacement unit and after 5 mins only when ps download apps it goes down from 100mbps to 10mbps, Maybe it's a software bug I think, Shud wait for Oct patch and decide to refund or not.
 

chromaniac

Member
Oct 2, 2021
24
4
Gurgaon, India
with a short seven day window, amazon does not give you much time. i have applied for a refund. would see if another fe model arrives on the scene in near future. hard to rely on samsung to fix this issue if fixable through a software update without any clarification from their end for this massive issue on the Sep 21 batch. they could have posted a message on their own support forum. instead, they are copy pasting same message everywhere asking users to reset network settings.
 

Arun A V

New member
Dec 3, 2017
2
1
heh. phone support guy said that since i already have a tech visit scheduled on 6th, he cannot do anything right now. but he assured me that if that visit does not create a replacement request, i should contact phone support again and they would it from their end. this whole thing is turning into a joke though.

i would do a reset tonight. and test the phone thoroughly through tomorrow. i was just hoping to find someone here who bought the phone during the current sale and got a unit that seems to have stable wi-fi on their phone. because that would indicate hardware fault and not something samsung messed up in their firmware update.

would keep you posted. and please you also update when you get your replacement unit and if it has the same issue or not! cheers.
I didn't face this issue . I had around 3GB data in whatsapp backup and when I got the phone it was able to restore it quickly connected with my wifi . Also in seedtest I'm getting 230 MBPS reading.

S20 FE 5G
Bought on - 4th OCT 21 Sale
September 202q Mfd
 

Attachments

  • Screenshot_20211008-074244_Speedtest.jpg
    Screenshot_20211008-074244_Speedtest.jpg
    286.2 KB · Views: 20
  • Like
Reactions: chromaniac

chromaniac

Member
Oct 2, 2021
24
4
Gurgaon, India
That's good. I really have no simple way to test this issue except for installing an app like WiFiMan from Ubiquiti. On the second tab, it shows connection speed to your wireless network. On my S10 Lite, this speed remains stable. On my units, these speeds fluctuated way too much even dropping down to 6mbps at times. All this within 4-5 feet of my router. If you do want to check, try this out and compare the stability of Wi-Fi connection with another device at your home! Thanks.
 

chromaniac

Member
Oct 2, 2021
24
4
Gurgaon, India
I had an offtopic question about the s20 fe 5g here. both units i received had damaged screenguard out of the box. amazon listing also has a few comments that talk about damaged screenguard. mine had bubbles which were visible when the display was off and even when display was on over white backgrounds.

I am still using the factory screenguard on my S10 Lite. There are a few scratches here and there but it still has been pretty great not to deal with a third party tempered glass protector. It was flawless out of the box.

Both S10L and S20FE have optical fingerprint sensor so tempered should work with it. From what I have read, ultrasonic fps on the higher end models have issues with glass.

How many of you faced this issue on the units delivered to you.
 

illusionip

Member
Oct 5, 2021
8
1
I had an offtopic question about the s20 fe 5g here. both units i received had damaged screenguard out of the box. amazon listing also has a few comments that talk about damaged screenguard. mine had bubbles which were visible when the display was off and even when display was on over white backgrounds.

I am still using the factory screenguard on my S10 Lite. There are a few scratches here and there but it still has been pretty great not to deal with a third party tempered glass protector. It was flawless out of the box.

Both S10L and S20FE have optical fingerprint sensor so tempered should work with it. From what I have read, ultrasonic fps on the higher end models have issues with glass.

How many of you faced this issue on the units delivered to you.
The screen protector bundled with the device is just to avoid the scratches(during shipments) on display temporarily. Its Better to change it. There were no bubbles with my unit. I changed it with tempered glass(since plastic based protector tend to scratch quickly).
 

march9

Member
Feb 10, 2018
23
0
I've also ordered from Amazon, yet to be delivered. Should I cancel it? Have the touchscreen issues posted in this forum & elsewhere have been resolved?
 

Top Liked Posts

  • There are no posts matching your filters.
  • 2
    Hi,

    I'm trying to resolve my WiFi problems on Samsung S20 FE 5G. When I download large files (games, updates, big apps) WiFi speed drops from 300 Mbps (that's my provider speed) to < 10 Mbps or even completely stops. It happens after a few minutes of download (sometimes less) - the estimated download time goes from few minutes to few hours. If I continue to download speed usually goes up again after another few minutes. Or I can restart wifi/put phone in airplane mode/restart it - it restores normal WiFi speed.
    What I've already tried but didn't help:
    - reset phone network settings
    - reset router to factory settings and tried changing some of its options
    - changed WiFi channel
    - checked in safe mode of the phone
    - tried without my silicone case on the back of the phone (as it might be some overheating issue)
    - set my WiFi network as unmeasured in the phone settings (don't know really if that's the correct name of this setting in English)
    - set WiFi connection to use phone MAC address instead of random one
    - disabled automatic switching to mobile data when wifi connection quality is poor
    - update the phone to latest August version (Android 11)
    - wipe cache partition
    - turned on enchanced processing

    On other devices in my network connection is stable with 300 Mbps - checked with Speedtest.net. On 2.4 GHz WiFi problem also occur but only sometimes - on 5 GHz it happens every time. I also didn't notice it on LTE.

    It seems that it might be some overheating issue so I've installed CPU monitor to check it - during download temperature went up from 30 Celsius degrees to over 50, then the connection speed dropped, temperature went down to about 40 degrees Celsius and after some time the speed increased again.

    Is there any thing I can also do before returning phone to Samsung service?
    2
    He claims to not have such issues. He's running the latest update as well, so I'm leaning towards believing that this is not a software issue. Anyways, I got a direct replacement booked by calling Amazon (thanks for the heads up, I'd have had to deal with the technician if done through app)

    Hoping this doesn't occur on the replacement unit. Other than this issue I've really come to like the phone. Fingers crossed!
    1
    Would do in a couple of hours. It's just annoying that Amazon would not offer a replacement for manufacturing fault within the first week of purchase as per their own policy. And is forcing me to deal with third party outlets who are not going to understand the wi-fi stability issue on this device. They have a stupid app that tests phone and of course, it found my phone properly functional.
    Dude call them don't use that ****ty app to find the issue request a call directly rn!
    1
    when the device gets a little warm.
    yup. this is exactly what happened during the restore process. phone was on charge and it was restoring and updating around 100 apps. internet was extremely slow at the time.

    i have a feeling that this is a software issue. samsung is throttling wifi to save on battery or something. BUT. they have had almost a year to optimize wi-fi on this phone.

    october update might have a fix assuming they know about this issue. but it is currently available only in europe. it's unlikely india is getting it this week. would have been nice to test out wifi after installing it.
    1
    It's been very long since I logged into XDA, and probably too late for Amazon replacement. 😢

    This is my 1st affordable flagship phone and sad to see so many people facing this issue.

    I bought it in the same sale, 2 October midnight, delivered 5 October morning. It had August patch on it.

    BUT I just saw this thread only this morning.

    I don't use Wi-Fi internet, but I did order a TP-Link archer C60 AC1350 router for high-speed data transfer/offline streaming from my PC. It's not even shipped yet😬.

    Whenever I do get this router, I could check the issue for you guys.

    I did do a few file transfers over Wi-Fi with a different phone and my PC using hotspot, but honestly it neither took long enough, nor would it have been revealing even if it did (The PC adapter is bottlenecked by 150 mbps Wi-Fi n).

    If I may make a suggestion here, I'd say this: since all of you are saying this issue looks like throttling (initially speed is great, later it stumbles to a crawl, Temps get high), might it be a good idea to turn on "enhanced processing" option,and run the tests again? It's found in more battery settings (or you can search for those 2 words. I'll be attaching a screenshot anyway.)

    Perhaps that'd ignore artificial thermal limits imposed on wifi.

    Or maybe those of you willing to do it, could downgrade to One UI 2.5 and check it there as well?
    It's the same for me with enchanced processing and without it.