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WiFi is extremely slow

JorgeMoreno92
Visitor
June 2016
June 2016

WiFi is extremely slow

I have an Xperia Z5 Premium and I am having a terrible experience with the wifi connection. Able to connect with no problems and it stays connected but the speed is ridiculously slow. I have a 10mb connection and if I run a speed test I get .01mb of speed, have tried different tools to measure and all show similar results while I can test with a PC, iPad and a Samsung S7 and I get a normal speed result on those of 10-11 mbps. This is really annoying because it obviously doesn't let me use Remote Play because of the speed and when it connects it is impossible to play.

I have already rest the device to factory settings and it didn't help, also tried the Software Repair from PC Companion and it didn't help either.

Something to note, I once got an error saying that the wifi couldn't start while it was already started andnI had to restart to get it on again.

What can I do about this?
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22 REPLIES 22
Jonaper
Visitor
May 2017
May 2017

Hi. Hope somebody can help me. I am experiencing very slow internernet connection when connected via WIFI. This goes for any network I am connected to - and for any app. When I turn off WIFI, the speed increases to normal. 

Of course I have cleared cache, and I have scanned for malware. 

Any tips?

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JorgeMoreno92
Visitor
May 2017
May 2017

Yeah a couple of tips.

  • Don't ever buy from SONY anymore.
  • Try a 5Ghz router man, my Z5 won't work properly on any 2.4Ghz router no matter what, it is partially true that some people mention that if you pair your phone to a bluetooth device, it fixes the problem, since this is going to work just for some time(not even hours) and you will be back at square 1.

That is the advise I can give you, or take it back if you are lucky enough to be under warranty.

I purchased this to use PS4 remotely but even in my local network it **bleep**, so I just learned to leave with this **bleep**ty(most expensive I've ever had) phone!

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Javierdsv
Visitor
May 2018
May 2018

@Yarko4wrote:

I FOUND THE ANSWER!!!

I was having the same problem. Very slow loading videos on Facebook App, and Youtube App. Chrome navigation was slow but not that bad as Youtube and Facebook. 

What I found is that my router was transmitting in CHANEL 11 which apparently doesn´t go well with the phone because other devices and PC´s were completely fine, just this little expensive and not so good phone had problems with that. Even a Samsung cheap smartphone loaded videos with no problem. 

So back to the solution, I tried looking for the option of GHz to switch between 2.4 to  5 GHz on the options of my modem but couldn´t find it so reading an article I decided to try the channel. I switch from eleven to 6 and nothing really change, but at the beginning, it seemed to improve just a bit. Still looking for some real change I went and try channel 1. Omg, as soon as that modem restarted, all the apps and videos were flying as they should, no stop, just loading way way faster, you didn´t even wait for anything in none of the apps mentioned before.

So apparently this phone can´t handle interference very well, and it works better on some channels.

I'm sorry for bringing this old post up, but I want to add that this is still relevant.

I was experiencing serious slow Wi-Fi on my Xperia X Compact. All my other devices were working just fine except my phone. Followed the advice from Yarko4 about switching the Wi-Fi channel from 11 to 1, and the problem is solved. I guess this is related to old router configurations. 

Hope this can help more people later. 

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