Develop Bugs

[Q] can not connect to 5GHz band WiFi

Since a few days in can not connect to my 5GHz band WiFi anymore. Connection to 2,4 GHz band networks works fine.
I'm running Stock ICS 4.0.2 (rooted) with baseband XXKL1. Does anyone else have this issue? My router is a AVM FRITZ!Box 7390 but I don't thinks it is related to it because my both notebooks work properly with 5GHz.

may be a stupid question ,have you checked the phones wifi setting.

Which settings do you mean exactly? Frequency ist set to auto and when I scan for networks the 5GHz WiFi shows up but I can't connect.

would it be the baseband that you flashed affected it.

kms108 said:
would it be the baseband that you flashed affected it.
Click to expand...
Click to collapse
EDIT:
I was mistaken XXKK6 came with 4.0.2 will revert when I am home.

Please check http://code.google.com/p/android/issues/detail?id=22474 and star it if it applies.

zapek666 said:
Please check http://code.google.com/p/android/issues/detail?id=22474 and star it if it applies.
Click to expand...
Click to collapse
Thanks that is exactly what I am talking about.

[Q] Wifi doesn't work

Hi there,
Today I recognized that my wifi doesn't work. I can switch it on an there is also a massage that there is a wifi network available in the notification center. But if i open settings/wifi the phone writes no wifi networkes available.
My Z1c is rooted (KK .757) and locked bootloader.
Has anybody a idea how I can solve this problem?

mikk_11 said:
Hi there,
Today I recognized that my wifi doesn't work. I can switch it on an there is also a massage that there is a wifi network available in the notification center. But if i open settings/wifi the phone writes no wifi networkes available.
My Z1c is rooted (KK .757) and locked bootloader.
Has anybody a idea how I can solve this problem?
Click to expand...
Click to collapse
This happens to me sometimes, after a restart works for me. May be next update may solve this problem

I've already restarted 3 times but doesn't help.

You can try: 1. restart your router
and 2. delete the settings for your network in your Z1C and make a new registration.
Is the problem solved?
I think no.1 will solve the problem. What a router do you? Many routers can do a automatic restart after flashing DD-WRT or Open WRT. These firmwares are available for the most routers.
greetings

What do you mean with 2.??
I've already tried to restart my router. But I'm pretty sure that the problem isn't the router because I can connect with other devices to the router.

go to settings - WLan and tap long time on your network and delete it.
It does not matter, that other devices can connect to your router.
I had the same problem with a TP-Link router after few days running. A restart helps only.

Delete the network doesn't help too.
It does not matter, that other devices can connect to your router.
I had the same problem with a TP-Link router after few days running. A restart helps only.
Click to expand...
Click to collapse
Usually I find also the wifi networks of my neighbours. But now I don't find any wifi network.

mikk_11 said:
Delete the network doesn't help too.
Usually I find also the wifi networks of my neighbours. But now I don't find any wifi network.
Click to expand...
Click to collapse
For sure you have problem with your router since low cost routers is nothing than an s***t ! I had the same trouble with an low cost router until I come back with an good Dlink DSL2740B router 5 years ago, everything working flawlesly constantly ~5 years, no wifi isues! My sugestion to you is to buy an good home router! I have plan to bye this one http://www.dlink.com/us/en/home-solutions/connect/routers/dir-880l-ac1900-wifi-router which will work for sure perfectly next 5 years (probably more)!

I've solved the problem already. The problem wasn't the router.
I had to wipe DATA and then my WIFI worked again.
Then I tried to restore a backup what I've made befor but then wifi doesn't work any more.
So there was something buggy with my DATA..

Oneplus 3 - Issues with 5GHz WiFi?

Hello,
I seem to be having an issue with connecting to my 802.11ac router (Apple's Time Capsule). In "Automatic" mode, it connects to my SSID via 2.4GHz only. When I go to Settings > Wi-Fi > Advanced and choose Wi-Fi Frequency band as 5Ghz it finds 0 networks in the area.
FYI - I'm on 3.1.3 OxygenOS.
Is anyone experiencing similar issues?
Best,
Mash
Edit: To be clear, I have several devices including my laptop that are connected to the 5Ghz band. I've also used a WiFi scanner in my old S6 Edge to verify that there are SSIDs broadcasting in the 5Ghz band.

I use 5 GHz network at home and it works fine with my op3.
Wysłane ze zmywarki

using 5Ghz on Fritzbox, i also use diffrent ssid names for 2,4 and 5ghz and also different passwords

Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...

mash2u said:
Hello,
I seem to be having an issue with connecting to my 802.11ac router (Apple's Time Capsule). In "Automatic" mode, it connects to my SSID via 2.4GHz only. When I go to Settings > Wi-Fi > Advanced and choose Wi-Fi Frequency band as 5Ghz it finds 0 networks in the area.
FYI - I'm on 3.1.3 OxygenOS.
Is anyone experiencing similar issues?
Best,
Mash
Edit: To be clear, I have several devices including my laptop that are connected to the 5Ghz band. I've also used a WiFi scanner in my old S6 Edge to verify that there are SSIDs broadcasting in the 5Ghz band.
Click to expand...
Click to collapse
Got a 3TB time capsule here. OOS 3.1.3 - on automatic, it only connects to 2G despite having full 5G signal, however if i switch it to 5G only, it finds both main and guest networks in that band and connects fine Try re-flashing stock rom

Thanks - I'll try and do a nandroid backup and reflash to see if that fixes the issue.

mash2u said:
Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...
Click to expand...
Click to collapse
3.1.3 stock, not rooted

Check what frequency and channel width your 5ghz band is set to, one time I changed my 2.4ghz and my ps4 couldn't detect it til I changed back.

Just tried 5Ghz without issue using channel widths 20Mhz, 40Mhz, and 80Mhz.

TritonB7 said:
Just tried 5Ghz without issue using channel widths 20Mhz, 40Mhz, and 80Mhz.
Click to expand...
Click to collapse
Thanks guys. I wonder if I've got a lemon.
I've just reflashed 3.1.3 and even then can't find or detect ANY 5GHz SSIDs. This is so frustrating.
I guess a call to support is the way forward.

mash2u said:
Thanks guys. I wonder if I've got a lemon.
I've just reflashed 3.1.3 and even then can't find or detect ANY 5GHz SSIDs. This is so frustrating.
I guess a call to support is the way forward.
Click to expand...
Click to collapse
Check if you are able to connect to a different 5GHz Network. It _might_ be an issue with the router itself.
Mine OP3 connects to 2.4 and 5 without any problems (TP-Link Archer C7).

mash2u said:
Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...
Click to expand...
Click to collapse
I'm on non rooted 3.1.2.

It works fine for me on 3.1.2 and 3.1.3
Wysłane ze zmywarki

Just wanted to report - no issues with 5GHz networks whatsoever, used 3.2.0 and 3.2.1 now.

Try to change channel to 40 and try had this issue whit some phone
From North Pole

I am facing the same issue my phone can scan 5GHz wifi but it does not connect and error shows wifi connection failure.
I am on 3.2.1 and my router is ASUS WRT68u
Please do share if any solution is found!

m_usmanayub said:
I am facing the same issue my phone can scan 5GHz wifi but it does not connect and error shows wifi connection failure.
I am on 3.2.1 and my router is ASUS WRT68u
Please do share if any solution is found!
Click to expand...
Click to collapse
Channel 36 for 5ghz is confirmed working for me on latest update, rooted etc

for me connect to 5 ghz but in seconds turn automatically to 2.4 ghz
update to 3.2.1 and the problem still there

ALUCARD4DEAD said:
for me connect to 5 ghz but in seconds turn automatically to 2.4 ghz
update to 3.2.1 and the problem still there
Click to expand...
Click to collapse
Try going into advanced wifi settings and setting your network mode to 5ghz only. Inconvenient but will do the job.

manor7777 said:
Channel 36 for 5ghz is confirmed working for me on latest update, rooted etc
Click to expand...
Click to collapse
does not work here.... tested on both rooted and unrooted

5ghz wifi connection?

Hi all, I can only connect to 2ghz wifi, 5ghz wifi does not appear at wifi settings. I remember when unbox the phone I connected to 5ghz wifi, but now no. I'm dreaming or anything goes wrong?
Edit: done a reset in recovery mode and 5ghz wifi appear in settings. I will not restore a previous backup
Edit2: I finally found what happens, if you untick the 5g in SIM settings the 5ghz wifi band stops working. And if I active the VolteHD I can't identify the contact.
Edit3: No working 5ghz wifi after 10 minutos standby.
Best regards.

Ill tried this but didn't work more than 10 min.
Any idea why this happens?

Adrian120 said:
Ill tried this but didn't work more than 10 min.
Any idea why this happens?
Click to expand...
Click to collapse
Same as you, no idea. Sorry. Only 2.4ghz connection.

neo9596 said:
Same as you, no idea. Sorry. Only 2.4ghz connection.
Click to expand...
Click to collapse
Yesterday, I did a safe reboot to the phone and I got some hours of 5GHz band connection without issues.
Today, I turned on the WiFi on the phone (I sleep without it activated), and connected automatically to the 5GHz band.
But after 30 minutes has passed, the problem showed again (no 5GHz band, no 5GHz neighborhood bands).
My old phone still reach them and can connect to the 5GHz networks.
Really annoying bug. Also, it seems it's nothing related to the 5g button / mobile network settings

I'm connected to 5ghz just fine, however personal hotspot only works on 2.5ghz.

Hi, global or CN rom? mine is global 8g128gb

I don't have any problem with the 5ghz wifi. Mine os global rom 12/256

China here

Tjnr said:
I don't have any problem with the 5ghz wifi. Mine os global rom 12/256
Click to expand...
Click to collapse
you are the only man in the world! check in properties of the wifi the speed and you will see that is connected to 2.4ghz. Only one question more, do your wifi have two ssid, XXXX and XXXX5g? or the ssid is the same for the two bands?

neo9596 said:
you are the only man in the world! check in properties of the wifi the speed and you will see that is connected to 2.4ghz. Only one question more, do your wifi have two ssid, XXXX and XXXX5g? or the ssid is the same for the two bands?
Click to expand...
Click to collapse
I have two ssid, and i have two passwords for each ssid. In my home only works WiFi 5ghz and i have the mobile data off. If i'm the One i don't no, but is true for me the WiFi network os perfect for now.

Guys I'm on North America version 3.08 and I have no 5ghz Wi-Fi issues at home. I have 5G enabled and my VoLTE / caller ID is working perfectly on T-Mobile as well. My Wi-Fi has two ssid, XXXX and XXXX5g with the same password.

mhajii210 said:
Guys I'm on North America version 3.08 and I have no 5ghz Wi-Fi issues at home. I have 5G enabled and my VoLTE / caller ID is working perfectly on T-Mobile as well. My Wi-Fi has two ssid, XXXX and XXXX5g with the same password.
Click to expand...
Click to collapse
Enabling 5g removes the volte option so you can't have both

ctakah27 said:
Enabling 5g removes the volte option so you can't have both
Click to expand...
Click to collapse
I realize that but I was just saying that my data is working perfectly on 5ghz Wi-Fi and T-Mobile.

Global 8GB/128. No issues with 5ghz bands.

ctakah27 said:
Enabling 5g removes the volte option so you can't have both
Click to expand...
Click to collapse
The option disappears, but volte still works.

neo9596 said:
Hi all, I can only connect to 2ghz wifi, 5ghz wifi does not appear at wifi settings. I remember when unbox the phone I connected to 5ghz wifi, but now no. I'm dreaming or anything goes wrong?
Edit: done a reset in recovery mode and 5ghz wifi appear in settings. I will not restore a previous backup
Edit2: I finally found what happens, if you untick the 5g in SIM settings the 5ghz wifi band stops working. And if I active the VolteHD I can't identify the contact.
Edit3: No working 5ghz wifi after 10 minutos standby.
Best regards.
Click to expand...
Click to collapse
I have the same problem with 5ghz wifi. It happened randomly from time to time in not able to find and 5ghz ssid. The only way to make it work again is to restart the phone and my phone will be able to see and connect 5ghz wifi.

I also have no problem with 5Ghz WiFi issues. Mine is NA/Asia version 3.13 8/128 variant.

Similar issue 5ghz hotspot
I did not have problem connecting to 5gh wifi, but i had another issue where my other devices supporting 5ghz band could not detect my 5ghz RM5G hotspot. I found a solution in this website for another problem but it solved this issue. Just switch the sim from slot 1 to slot 2 and restart the phone. This fixed the problem for me and all my devices detected and connected to the RM 5ghz hotspot without problems. Maybe this would work to make the RM detect the 5ghz wifi.

Question 5ghz WiFi Issue

I bought a Poco F4 (global version, xiaomi.eu 14.0.5.0) about one month ago, I haven't had any issues with it whatsoever, save for the fact that it suddenly won't detect my 5ghz WiFi networks (my main router + a repeater) - and I'm not even sure if this is an issue with the phone itself.
I'm coming from a Samsung Galaxy S20 FE, which was known to have this issue, but to have this happen on 2 different phones is really weird. If I recall correctly this issue started to affect me after I changed my ISP.
The only ways I have to detect the networks again is to go the debug mode and use the WiFi Sniffer Test Tool or reboot the phone, which was more or less the same thing I had to do on the S20 FE (I had to go turn on airplane mode try updating the firmware via debug mode).
What I've tried so far to solve this issue:
1. Changing the channel of the 5ghz WiFi
2. Changing the bandwith from 20/40/80 to 20/40
3. Setting "Use Device Mac" on the phone's network settings.
4. Turning off WiFi Scan Throttle
5. Changing the bandwith to 20
All of the above methods, save for the last one, did not work. And while it does work, it limits the speed of my internet to bellow 100mbps.
The issue is not related to the WiFi coverage as well since it only happened when I'm on my own room, which is where my router is located.
I don't know if I can detect other networks apart from my own since even when they 5ghz detection is working I can't find any of my neighbors' networks. I'm unable to create a 5ghz hotspot on my S20 FE or on my old Redmi Note 9S for some reason.
I'm at a loss on what to do, it happens on both stock and xiaomi.eu, at least and at most once per day.
If anyone else is facing the same issue or has any suggestion on what I should try next please let me know.
Thanks in advance.

I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router

This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.

0kti said:
I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router
Click to expand...
Click to collapse
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
TheMystic said:
This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.
Click to expand...
Click to collapse
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.

mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.

furquim97 said:
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.
Click to expand...
Click to collapse
The problem is indeed with your router + repeater setup. Your phones are fine.

0kti said:
mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.
Click to expand...
Click to collapse
Thank you! I'm almost certain that the issue is that the bandwith isn't fixed at 80mhz, it's 20/40/80mhz, and when I had the bandwith set to 20mhz I didn't had the issue.
TheMystic said:
The problem is indeed with your router + repeater setup. Your phones are fine.
Click to expand...
Click to collapse
Thank you! It's probably related to the bandwith. I was able to turn on an old router and my phone was able to detect the 5ghz network after the bug happened and my router + repeater signal was missing.

Have you tried resetting your router to the default settings? Or maybe set a specific IP address on your phone in your home network? As said above, it is a setup issue of your network most probably..