Develop Bugs

[Q] Strange WiFi connection issue

This is a strange issue that I have not seen before. I was starting to have issues with my phone connecting to the wifi at the house. I decided to flash a clean rom today and hopefully that would fix the issue. I did a clean install and now my phone will only connect to the 5G band and not the 2.4GHz wifi band. I would like to connect to the 2.4ghz band but I get a message saying authentication error. I removed the connection and connected using the wps push button but when i do this it only sees the 5G. Any ideas what is going on and how I can correct it?

Do you see the same issue on the stock build ??
You are running what rom ??
Try the rooted stock build as a test. ..and if no change. ..reset the router and set up the connection on the device again. ..g

Have you tried turning off the power saver?
I suspect your router as the culprit but you can try going into the advance menu.
Hit *#0011#* hit menu then wifi menu.
I think you may even be able to choose the band? I think you can choose auto or manually pick 2.4 or 5ghz. Either way see if shutting off the power saver helps.
sent from my T.A.R.T.I.S
(Time And Relative Tarts In Space)

That is strange usally its the other way around...I have my dual band set up similar to yours..I named the 2.4 actually 2.4 and 5.0 same password..sometimes ill have to hit scan to show the 5ghz band...sounds stuiped..but make sure you click show password and make sure your entering rhe correct one..it may be so simple you may entered wrong password...or try changing the channel on the 2.4 ghz in rhe router setring to a different channel..mybe be a conflict..change it to channel 11..and reboot the router. ..

I have tried it on a stock rooted rom as well as CleanRom 3. Does the same. I have not tried a CM based rom to see if it only does it with the TW based rom's. I have checked the router and I don't see anything there that should cause the problem. I have 4 other android phones, and android tablet, and 1 iphone in the household and none of the others are having this issue. I have also noticed that it doesn't always say authentication error. Sometimes it says out of range even though I can be standing right beside the router. I am stumped.

ElAguila said:
I have tried it on a stock rooted rom as well as CleanRom 3. Does the same. I have not tried a CM based rom to see if it only does it with the TW based rom's. I have checked the router and I don't see anything there that should cause the problem. I have 4 other android phones, and android tablet, and 1 iphone in the household and none of the others are having this issue. I have also noticed that it doesn't always say authentication error. Sometimes it says out of range even though I can be standing right beside the router. I am stumped.
Click to expand...
Click to collapse
Did you ever solve this? I'm having similar problem with my Note 2. I have a strong wifi signal incoming to the phone, but the transmission signal is very weak (verified using dd-wrt on the router and looking at client signal strength). My Note 2 has extremely poor strength.. ~10% where every other device on my network is ~50%. I've tried factory reset, turning off wifi power save mode.. not sure what else to try.

I am having a similar problem for the past couple months. My Note2 (ATT) with custom ROM won't connect to a 2.4 GHz wifi. No problem connecting to 5GHz wifi.
I saw an answer to this for a Sony Experia that the problem is with 802.11 mode and to change a file option gDotMode from 3 to either 1 or 2, but I haven't found a file with that option in it yet.

Same problem here, no 2.4 authentication unless the phone is very close to 2.4GHz AP.
Same problem here, no 2.4 authentication unless the phone is very close to 2.4GHz AP.
I have noticed that in some public networks i can connect with no trouble, (I guess now that they're 5.8GHz)
but not at home
Any solution? I am using a note 2 i317m with stock rom 4.3 from TELCEL mexico carrier

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

Networking problems: WiFi, IPv6

Hi,
since abut 3 or 4 weeks I've more and more problems with my Z2. I'm on stock 8.0.0, not branded, pure Moto. My home network is dual stack IPv4/IPv6. IPv6 uses auto configuration and router advertisements, no DHCPv6. My problems are:
WiFi disconnects periodically. I notice this when I'm reading. Then I see WiFi turning off and on again. The next Problem is related to this.
Some times (I thinks with every other [re]connect) the phone does not have a IPv6 address.
Nothing I've found (reset play, clear cache, etc.) helped. Any suggestion?
TIA

Unfortunately, the Z2 does have issues with wifi. Stock or AOSP the heart of the problem is om Moto's side. The only thing that helped (for some) is to disable wifi location scanning in the location settings, setting a static ip addy, and again (for some) use the 2.4ghz network if you have a dual band router. This is by no means a fix, it more like salt in the wound lol. It has helped some, so you might give it a try.

Thanks. In the mean while I've tried some thing I've read in an other thread on XDA. I've split 2,4 and 5 GHz in two different SSIDs. This seems to help. In that thread I've read that this is an issue with the WiFi chip set.
If the problem comes back I will try what you've suggested and report back ...

Working REAL(!) 3g / 4g USB Modem-Sticks on PX5/PX3 Units

UPDATE 17th sep 2019: PROJECT CLOSED, see post #147 .
Okay,
we´ve got many threads about "3g/4g" USB-sticks für Car Androids powerd by PX3/PX5.
BUT: most posts describe WiFi-Sticks and Sticks recognized as ethernet connection or ´WiFi-Hotspot Crap´ devices.....
i think we need a thread for WORKING REAL MODEMS (detected as mobil-connection) on this devices.....
----------------------------------------------------------------------------------------------------------------------------------------------------------------
so! here the first modem i found that 100% worked as a MODEM:
as 3G:
Huawei E173u-1 (fully working w/o loosing connection, be sure to run Firmware 11.126.85.00.209; up- or downgrade!!!)
Huawei E173u-2 (fully working w/o loosing connection, be sure to run Firmware 11.126.85.00.209; up- or downgrade!!!)
(Huawei E173S-1 WILL NOT WORKING!)
tested on PX5 with Malaysk 3.2 (oreo)
Firmware 11.126.85.00.209 for E173:
https://download.myusbmodem.com/home/Huawei Firmwares/E173/E173Update_11.126.85.00.209_B427.zip
flash code generator:
https://huaweiunlockcalculator.com/huawei-flash-code
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today (14th March 19) i can confirm:
also working with 3g:
HUAWEI K3772 - HSPA USB Stick
note:
- working with ALL PX5 Android Systems (Stock Marshmallow, Malaysk Marshmallow, Stock Oreo, Malaysk Oreo, hal9k Oreo)
- no problems with handover or switching between 3g/2g
- perfect working surf-stick
Pictures of the Stick (wtf... IMG bbcode doesn´t work )
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190314_2.jpg
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190314_1.jpg
----------------------------------------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------------------------------------
today (15th March 19) i can confirm:
also working with 3g:
HUAWEI E3131s-1 3G Surfstick in ´Modem-Mode´ <recommended Device for ´Oreo´
note:
- working with ALL PX5 Oreo Android Systems (Stock Oreo, Malaysk Oreo, hal9k Oreo) > NOT working on any Marshmallow (only signal strength shown, no 3G connection)
- no problems with handover or switching between 3g/2g
- perfect working surf-stick
- has the BEST RADIO LINK with PERFECT SPEED-RATE of all tested devices (til today; 15th March ´19)
- has connection for an external antenna (CRC-9 jack) > great
Pictures of the Stick (wtf... IMG bbcode doesn´t work )
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190315_1.jpg
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190315_2.jpg
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190315_3.jpg
pictures.net-freaks.com:1073/user112718ef/2019/xda/20190315_4.jpg
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/chris

Hi Chris
I can confirm on Hal9k Rom
Vodafone K5150 LTE, same as Huawei K5150 is working 100%
Only issue you don t see the connection in the Status bar.

redmkiv said:
Hi Chris
I can confirm on Hal9k Rom
Vodafone K5150 LTE, same as Huawei K5150 is working 100%
Only issue you don t see the connection in the Status bar.
Click to expand...
Click to collapse
but detected as mobile-connection???

Yes detected as mobile connection

redmkiv said:
Yes detected as mobile connection
Click to expand...
Click to collapse
EDIT:
the K5150 is NOT working stable. the connection will crash when driving (handover problems) and switching from 4g to 3g and back. tested for 10 days.
/chris

do they configure the APN automatically?
do you see mobile data settings in android settings by default or only after connecting the USB LTE stick?
does it power up when unit turns on?
how long till connection is established after boot?
i'm also looking for a working LTE stick for a Xtrons PX5 octacore 4/32GB with 8.0....even their own Xtrons accesory is used as hotspot, not mobile data mode.

zerozoneice said:
do they configure the APN automatically?
do you see mobile data settings in android settings by default or only after connecting the USB LTE stick?
does it power up when unit turns on?
how long till connection is established after boot?
i'm also looking for a working LTE stick for a Xtrons PX5 octacore 4/32GB with 8.0....even their own Xtrons accesory is used as hotspot, not mobile data mode.
Click to expand...
Click to collapse
hi,
unfortunately NO LTE stick is working native at this moment. only 3g/2g sticks are working. the best working device is the Huawei E173u-1 and E173u-2 AS NATIVE MOBILE CONNECTION (be sure you run Firmware 11.126.85.00.209 on E173; link in post 1). the connection established after ´wake up´ in 20 sec and shown in the status bar. pls. do not use usb extention-cables to connect the stick. the surfstick use up to 300mA und will crash when the USB cable is over 1m.
at this moment (mar2019) i´m working on a custom firmware for Huawei E398 LTE stick for native working on PX5 devices based on malaysk rom oreo. Hal9k ROM Oreo and mobile connection is NOT WORKING STABLE.
regards
/chris

i spent 2 hours with a guy selling USB modems and we tested over 30 models
i am running dec '18 official FW on an Xtrons PB88UNVP and i can confirm also no LTE stick working.
Couple of 3G/H+ sticks working perfectly: Huawei E173, E1750, E3131, K3770, K3772 and ZTE MF190
No other ZTE modems worked.
The Xtrons is totally missing mobile data connection settings in the network menu, don't know about other boxes.
Some sticks do get signal icon but no negotiated 3G network (guess due to auto APN missing), others appear as ethernet-over-usb i think, there's an icon like <...> appearing (instead of signal strength & 3G), but no working internet connection.
I am using a E3131 (21.6mbps) stick now, works just fine, it's a visible improvement over "older" E173 sticks with 7.2mbps rates.

i also tested many of the models you tested... many of them are functionality...BUT: when driving, the handover will NOT WORK with the most surftsicks.... it´s not a problem of the host (android headunit), it´s a problem of the sticks: they don´t support roaming/handover..... you can see this by driving around in your car; the 3G symbol is lost, but the carrier of the mobil-signal is good. after reconnecting the surfstick you get a 3G sginal again> that´s bull**** :crying:
only the (good old) E173 will do the handover/roaming perfectly. i think it it does not matter a high transfer rate in a car android system. you do not use youtube, etc.... you need the mobil connecting for ex.: navigating, ´blitzer.de´, traffic announcement. but in germany we will lost die 3G/2G support in 2 years. SO we have to find an LTE solution... and i´m working on it.....
/chris
edit: you have to install ´malaysk ROM´ on your headunit. the stock rom is crap... so many missing functions (like mobile support,vpn, ROOT(!!!) ) i can confirm, the custom rom works 100% stable (version 3.2 from malaysk). also you have so many extra features: a PERFECT sleep mode after ACC off with full control of the sleep-mode (an extra menu for stop and restart apps on wakeup; like an ´autostart´), and,and,and....

hmm, i just realized that if you use the Agama launcher, you can set it to show the mobile connection icon (top left).
Then if you click on it, you access the mobile data connection settings of Android...LOL?! You can see/configure the link speed, APN details, etc....
That's not accessible from the default launcher or normal android settings (on the official 8.0 FW)
Can anyone test this?
And what do you mean by handover? Between carriers? Networks speeds? Cell towers?

zerozoneice said:
hmm, i just realized that if you use the Agama launcher, you can set it to show the mobile connection icon (top left).
Then if you click on it, you access the mobile data connection settings of Android...LOL?! You can see/configure the link speed, APN details, etc....
That's not accessible from the default launcher or normal android settings (on the official 8.0 FW)
Can anyone test this?
And what do you mean by handover? Between carriers? Networks speeds? Cell towers?
Click to expand...
Click to collapse
this is not a "problem" of the launcher... the mobil-settings only shown, when a mobile-device is connected....
the setting are in the regular "connections-menu".....
for handover (hard/soft) read: https://en.wikipedia.org/wiki/Handover
regards

snakedoc73 said:
this is not a "problem" of the launcher... the mobil-settings only shown, when a mobile-device is connected....
the setting are in the regular "connections-menu".....
for handover (hard/soft) read: https://en.wikipedia.org/wiki/Handover
regards
Click to expand...
Click to collapse
no, they're not in the regular connections menu, either with or without a mobile device connected, at least not on my unit. I only have Wifi/VPN/etc....nothing on mobile connection. Furthermore, the whole system menu theme is black with white text, but accessing the mobile settings via Agama as you can see is black text on white background. So i think on the official ROM the settings are not "call-able" from default menu, they're hidden and somehow Agama opens them.
and so far, the E3131 works perfectly, starts in 10-15 sec after ignition, the box gets connected automatically to 3G, works nice. No 3G icon dropouts or connection interruptions.

so, can anyone with a PB88UNVP box (or any xtrons android 8/8.1) confirm this behavior?
this could open possibilities of other modem sticks (i had a few with this behavior) that were recognized by the unit (signal strength bar appears) but no auto-APN settings created (no 3G/LTE icon besides the signal bar, therefore no active connection)...

today confirm: HUAWEI K3772 - HSPA USB Stick...
see post #1
/chris

i solved this problem otherwise.
i bought a mifi, like https://www.mifi-hotspot.nl/huawei-e5785Lh-22c-lte-advanced-mifi-router-300-mbps-var
i put a simcard in this and made a always power on connection to it, so its always recharging.
then i just use wifi to connect
i have 4g everywhere now.

cuprafanatic said:
i solved this problem otherwise.
i bought a mifi, like https://www.mifi-hotspot.nl/huawei-e5785Lh-22c-lte-advanced-mifi-router-300-mbps-var
i put a simcard in this and made a always power on connection to it, so its always recharging.
then i just use wifi to connect
i have 4g everywhere now.
Click to expand...
Click to collapse
PLS. SEE 1. POST!!!!!
This thread discussed MODEM´s ONLY and NO wifi-hotspot crap. thx.

@snakedoc73
Sorry for late reply my K5150 is working normally with D1 no probs driving around, spotify is working without stops.
WA and Mail is working normally, for me is it a working solution.

today confirm: HUAWEI E3131 (E3131s-1) 3G Stick...
see post #1
/chris

snakedoc73 said:
today confirm: HUAWEI E3131 (E3131s-1) 3G Stick...
see post #1
/chris
Click to expand...
Click to collapse
i confirmed already in post #8 a whole list of modems that are working.
did you check if the factory 8.0 ROM on the PX5 shows the mobile data network settings?

Have you tried to enable Voice on 3131?
I use extended dashboard from http://huawei.mobzon.ru/ and also being able to disable dashboard showing (eg. CD Rom Driver disable which speed up connection time on HU) things I tested is that can easily receive/send SMS any have full access to phonebook.
Too keep on topic. You can easily access Modem menu by entering "4G" in search help and it will be started if Modem is detected as available.

Question Pixel 6 Pro keeps losing 5ghz WIFI connection

My wife's pixel 6 pro keeps losing the ability to connect to 5ghz WIFI. When this happens the phone will not even see the SSID's of those networks. The only fix for this is to reset all network connections. This will happen several times a day. When it does the phone will fall back to the 2.4ghz network and no 5ghz networks will be listed. Is anyone else having this issue or know of a permanent fix? I don't have any battery saver options enabled and adaptive connectivity is turned off. This started on the November update and has persisted through the January update. Her phone is non rooted stock. I probably should have RMA'd it sooner but I was hoping the January update would fix the issue but no dice.

This may be a possible solution, if you have access to the configuration settings for your wireless router. In some cases, certain WiFi chipsets have issues with certain channels. I had this issue with my Pixel 5 when I had the 5GHz network set to use channel 149, but when I changed to another channel

craigacgomez said:
This may be a possible solution, if you have access to the configuration settings for your wireless router. In some cases, certain WiFi chipsets have issues with certain channels. I had this issue with my Pixel 5 when I had the 5GHz network set to use channel 149, but when I changed to another channel
Click to expand...
Click to collapse
I haven't thought about that because my 6pro isn't having the issue. It's just doing it on my wife's. I'll give it a try though. Thanks for the suggestion.

I have the same problem! It also catches very poorly ..

Since the February update, my WiFi turns itself off constantly. Almost every time phone is off for more than 5 mins. I didn't have any issues prior to Feb update, so it's been a major annoyance to deal with. Yesterday I worked with TMobile to convert my physical SIM to eSIM, and I haven't had the issues since. Which is odd, but something I wanted to rule out after trying every adjustment. I have the unlocked P6P and if anyone is experiencing this issue, then maybe converting to eSIM will help you too!
My home network is WiFi6 and I'm connecting to the 5GHz signal. Though connecting to the 2.4GHz made no difference to the issue overall when it was happening.

murphyjasonc said:
My wife's pixel 6 pro keeps losing the ability to connect to 5ghz WIFI. When this happens the phone will not even see the SSID's of those networks. The only fix for this is to reset all network connections. This will happen several times a day. When it does the phone will fall back to the 2.4ghz network and no 5ghz networks will be listed. Is anyone else having this issue or know of a permanent fix? I don't have any battery saver options enabled and adaptive connectivity is turned off. This started on the November update and has persisted through the January update. Her phone is non rooted stock. I probably should have RMA'd it sooner but I was hoping the January update would fix the issue but no dice.
Click to expand...
Click to collapse
Its a bug. Don't RMA until you've re-flashed using the Flash Tool. I know it sucks having to do this, but you'll have to do it anyway if you get it replaced *and you'll be without a phone etc. backup your data (settings, system, backup) and files, and use the Flash Tool to "wipe and force flash partitions, along with re-lock bootloader"
here's the link:
Android Flash Tool
flash.android.com
There's also 12L which is much more stable then regular 12 version, link to flash that is here:
Android Flash Tool
flash.android.com