[Q] Cannot connect to 2.4GHz WiFi - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hi,
I purchased a used S4 recently, when I first unboxed the phone it connected to my home network just fine and WiFi was working great. After running the OTA update (I know it was dumb, but I my mind was numbed by the shiny new phone), I could no longer connect to my home network, and could only see a few of the nearly 20 networks I could see before the update.
After a lot of experimenting, I finally figured out that I simply could not see any 2.4 GHz networks on my phone! I can connect fine to 5 GHz networks and they work well, but I can't even see the 2.4 GHz networks. Any ideas on how I can fix this? I've tried searching the XDA forums and Googling the issue without much luck. Here's the closest thing I've found.
I'm a software engineer with some background in hardware, so I don't have any problems doing any kind of software or possibly even hardware mods to get it working. For completeness, I've detailed all the steps I've taken so far:
0. (First unboxed the phone, WiFi worked normally I was happily connected to my network)
1. Ran OTA update
2. WiFi quit working (displayed above symptoms)
3. Rooted phone (towelroot) and installed safestrap (3.7.2) following the last section of this post. - Issue persisted
4. Installed SHOstock ROM - Issue persisted
5. Followed entire Odin/stock re-flash using the same link above - When the phone first turned on after the NB1 install, it picked up my network. I thought this was an indication that it was going to work so I continued following the guide
6. Updated to NC1 - issue returned
7. Used Odin to restore phone to NB1 again - same issue
8. Realized only 5 GHz networks show up
9. Ran through complete re-install and am currently rooted with safestrap running LightRom v13 with the NC1 modules installed
10. Installed this WiFi band switcher. Whenever I switch to 5 GHz or auto I can see and connect to 5 GHz networks. When I switch to 2.4 GHz nothing shows up and when I hit scan it acts like it's not doing anything.

Related

[Q] Get 3g working with A500

Hi there, I am trying to get my A500 working with a HUAWEI E173 usb 3g modem. I spent the whole day researching what is have to do. However i was not able to get it working and i don't know why.
Here is the steps i did:
1. First i tried this guide, but the update.zip sent me in a boot loop, so i looked for a ROM with integrated 3g support
2. I found and flashed Thor's rom (which is i think far the best)
3. In setting there is APN setup menu, however i did not find any save option, so i downloaded APN manager from market and was able to configure it through that
4. I resetted my usb modem following the bottom instructions on this guide again.
5. I downloaded a ril-daemon restarter,
6. I connected my modem to my device, used daemon restarter, activated apn
7. Nothing happens, no connection, nothing
What am I doing wrong, what have i missed?
Please help guys!
Well, i have probed several roms, and i think Taboonay 2.2 (look in developer thread) is best working with Huawei 3G usb stick.
Sorry my english.
Good luck
Hi, thanks for the reply. I think the problem is not with my ROM, i triple checked everything. I have ro.carrier set to 3g, so not wifi only. It should work, but still nothing
I'm also having problems getting my huawei E173 to work with my A500 running Taboonay 2.2.
I have enabled 3G in TabooTools and disabled zero cd on the E173 via putty but when I rebooted the A500 I get the message 'Please insert a SIM card' on the lock screen and the Mobile settings menu is missing. It seems like the usb dongle has not been recognised by the tablet but when I ran the USB Device Info app it does show up with all the device info with the path /dev/bus/usb/001/003. I have no idea why it is not working except may be the modem is not compatible but the huawei E173 is listed as working for others. Could the problem be the firmware? I think the firmware is up to date because the modem was manufactured only a few months ago.
Also, in the /dev directory, I don't have ttyUSB0, ttyUSB1, ttyUSB2.
Does anyone know what the following dmesg means?
usb_wwan: version magic '2.6.36.3-Trinity+ SMP....' should be '2.6.36.3HoneyVillian-3.7+ SMP....'
option: version magic '2.6.36.3-Trinity+ SMP....' should be '2.6.36.3HoneyVillian-3.7+ SMP....'
Gip23 said:
Hi there, I am trying to get my A500 working with a HUAWEI E173 usb 3g modem. I spent the whole day researching what is have to do. However i was not able to get it working and i don't know why.
Here is the steps i did:
1. First i tried this guide, but the update.zip sent me in a boot loop, so i looked for a ROM with integrated 3g support
2. I found and flashed Thor's rom (which is i think far the best)
3. In setting there is APN setup menu, however i did not find any save option, so i downloaded APN manager from market and was able to configure it through that
4. I resetted my usb modem following the bottom instructions on this guide again.
5. I downloaded a ril-daemon restarter,
6. I connected my modem to my device, used daemon restarter, activated apn
7. Nothing happens, no connection, nothing
What am I doing wrong, what have i missed?
Please help guys!
Click to expand...
Click to collapse
I now have the same problem as you. Setup APN but no connection and NO RECEPTION. Signal strength is 0 dBm 99 asu.
there's a signal but no internet, help?
hi,
I'have the same problem.
i've called to my mobile provider and they had told me
that their is a connection between the 3g modem and my provider.
But on the tablet, the dispaly give no indiction that there'sa connection.
So I'm not able togoon internet or on gooe apps with my 3g usb stick (Huwawei k3565)
Any help,,?
grtz

[Q] i9505 LTE modem flash issue

Hi all,
I've had my phone locked on Tele2 (CRO) network which I needed to unlock to be able to use T-mobile SIM. I've used Odin 3.04 and followed the instructions to update modem to I9505XXUFNB9. I've managed to unlock the network this way and use my new SIM but the connection (both phone and mobile data) kept switching on and off constantly.
After that I've tried another firmware, namely I9505XXUFNDG for T-mobile but the problem now is that mobile is almost always off with no possiblity to connect and WiFi is blocked completely (security notification "Your device's security has blocked an action").
Basebands registered properly after every flash.
Phone is not rooted and me not being a power user would just love it to work as it was intended to
Followed the guide, all firmwares downloaded from here
Appreciate any help.
Might be onto something. After reading through this post seems I need to apply WiFi fix but I cannot tell which one to use for my phone (I9505XXUFNDG) as it's not posted. Kernel version 3.4.0-481100.
I've tried I9505_WiFi_FIX_MDM.tar and I9505_WiFi_FIX_MDF.tar but they just messed up the phone completely.
Thx a lot.
impaelas said:
Might be onto something. After reading through this post seems I need to apply WiFi fix but I cannot tell which one to use for my phone (I9505XXUFNDG) as it's not posted. Kernel version 3.4.0-481100.
I've tried I9505_WiFi_FIX_MDM.tar and I9505_WiFi_FIX_MDF.tar but they just messed up the phone completely.
Thx a lot.
Click to expand...
Click to collapse
Hi ,
you should flash the fix for the modem you have installed , try following:
Flash another modem from the list there
Now flash the modem wifi fix for that modem
If still in trouble re flash stock and start all over again.....
MAX 404 said:
Hi ,
you should flash the fix for the modem you have installed , try following:
Flash another modem from the list there
Now flash the modem wifi fix for that modem
If still in trouble re flash stock and start all over again.....
Click to expand...
Click to collapse
Thx, did just that and now it works properly.
Much obliged.
a problem started to show recently; when i select LTE/WCDMA/GSM for auto connect network mode when the mode switches due to signal availability it doesn't get reconnected. i.e. while under LTE it works fine but if i move and get out of reach it should automatically switch to slower network which it doesn't. this works fine if i select WCDMA/GSM then the switches are fine but LTE is not available under this.
one more thing i noticed since i'+ve flashed the phone is that the upper part of the phone gets very very hot (a lot more than before). since the flash i've also had to replace a microSD card which died within weeks (not necessarily connected but worth noting).
any suggestions welcome.
Android: 4.4.2
Baseband: I9505XXUFNB9
Kernel: 3.4.0-481100

HELP I broke my LTE

First off I'm using an unlocked S5 on straight talk's LTE network, have been for about 9 months with no problems. I've talked to support twice and they reactivated networks and all that good stuff, and when none of that worked sent me a new sim, which I have just activated and it still didn't fix my problem - so I'm finally bringing my issue here.
Last week I decided to update from phoenix rom oc4 (I think it was oc4) to optimal rom og5 (15-5). Anyway I was hasty in flashing and messed up, so just went back to stock ncg > root > full wipe > flash firmware, rom, kernel, firmware again just to be safe. The rom works fine except I seem to have lost my data connection. The 4G icon still shows, but it's not filled in - as you can see in the screenshots. To make it even more strange, when I check the network and sim card in apps like Advance Signal Status and Sim Manager, I still seem to be getting a connection to 4G but there is just no data flowing. The only error I can see is in phone info, when I run a ping test, I get PingIpAddr: Fail: IP addr not reachable which you can also see in the screenshots. It would appear this is my problem but I don't know where to go from here. I'm going to start flashing different versions of modems, starting with oc4 to see if that helps. Then I'll probably try different roms, but I've flashed other roms trying to fix this and even restored the backup to when it worked and it still didn't fix my problem. Did I wipe my IP address or something maybe? I am in CDMA/LTE mode, and the vzwinternet apn is selected.

Any custom rom has wifi problems.

Hi guys,
I've got a Samsung Galaxy S4 with this custom rom.
Unfortunately, the wifi connection drops or doesn't even work at all. I downloaded another custom rom, Cyanogenmod 11. For me, this rom also has the same wifi issues. So I followed this tutorial here on XDA to update my modem and bootloader to XXUHOF2. (I also flashed the wifi fix for that bootloader in pda/ap).
The modem and bootloader update worked, according to these screenshots: (See attachments)
But the wifi connection still drops or doesn't even work at all.
Also, the mobile connection and wifi indicator have sometimes got an exclamation mark next to them. (See attachments)
When I go back to stock, the wifi works perfectly. (But I don't want stock because I hate touchwiz).
By the way the mobile data, texting and calling also works fine.
What do I need to do to get the wifi working?
Thanks in advance,
Twitmuck.

Oneplus 5 does not connect to wifi networks

Hello!
My Oneplus 5 does not connect to any wifi networks. It is able to see all wifi networks in the range, and is also able to save the network if the password entered is correct, however, it won't actually connect to any network that is saved. I have tried using advanced options while connecting to a network to change from DHCP to Static settings, but it still won't connect to any network. I have also tried changing the wifi band frequencies (2.4 and 5 Ghz individually) to connect to a network but that too does not help. Mobile Data and carrier signal on the other hand work flawlessly, and so does bluetooth connectivity, NFC and personal hotspot (which is why I am very confused). I should also mention that when it fails to connect to a saved wifi network, it occassionally displays "Disabled" under the network SSID (replacing "Saved").
I have changed 3 different ROMs (LOS, stock OOS and No Limits ROM, even replaced the stock kernel with blu_spark r69 when I tried using No Limits and stock OOS to try and see if that fixed the problem), but the phone just won't connect to any detected/saved network using any of those ROMs. I have reverted it fully back to stock now (OOS 4.5.14 and stock kernel and stock recovery) and am still having the same problem.
Sorry if this issue has been solved before and if I am reposting something, but I really need this fixed ASAP and am not able to find a working solution after searching the forums and googling the whole day. Please help me! Thanks!
Edit: finally fixed the problem thanks to Ivints and PeterGuru. Check out the post that Ivints linked below (especially the comments in page 2 of the same)
BigTurboSkipper said:
Hello!
My Oneplus 5 does not connect to any wifi networks. It is able to see all wifi networks in the range, and is also able to save the network if the password entered is correct, however, it won't actually connect to any network that is saved. I have tried using advanced options while connecting to a network to change from DHCP to Static settings, but it still won't connect to any network. I have also tried changing the wifi band frequencies (2.4 and 5 Ghz individually) to connect to a network but that too does not help. Mobile Data and carrier signal on the other hand work flawlessly, and so does bluetooth connectivity, NFC and personal hotspot (which is why I am very confused). I should also mention that when it fails to connect to a saved wifi network, it occassionally displays "Disabled" under the network SSID (replacing "Saved").
I have changed 3 different ROMs (LOS, stock OOS and No Limits ROM, even replaced the stock kernel with blu_spark r69 when I tried using No Limits and stock OOS to try and see if that fixed the problem), but the phone just won't connect to any detected/saved network using any of those ROMs. I have reverted it fully back to stock now (OOS 4.5.14 and stock kernel and stock recovery) and am still having the same problem.
Sorry if this issue has been solved before and if I am reposting something, but I really need this fixed ASAP and am not able to find a working solution after searching the forums and googling the whole day. Please help me! Thanks!
Click to expand...
Click to collapse
Take a look at this topic, I solved my problem with the wifi on it : https://forum.xda-developers.com/oneplus-5/help/wifi-completely-broken-t3721004
lvints said:
Take a look at this topic, I solved my problem with the wifi on it : https://forum.xda-developers.com/oneplus-5/help/wifi-completely-broken-t3721004
Click to expand...
Click to collapse
Thank you so much Ivints! I'm trying to fix it right now with the solutions I got from the post.
I'm having exactly the same problem that the guy who started that post had. I'll let you know when I fix it and everything goes well again! Thanks again, bud!
if you want to stay on Nougat look for the O2N revert flash file it's in the Oxygen 5 beta threads that will let you get back to a nougat based rom.
The Oreo update touched other partitions outside of /system so those wifi drivers don't work with Nougat anymore
BigTurboSkipper said:
Hello!
My Oneplus 5 does not connect to any wifi networks. It is able to see all wifi networks in the range, and is also able to save the network if the password entered is correct, however, it won't actually connect to any network that is saved. I have tried using advanced options while connecting to a network to change from DHCP to Static settings, but it still won't connect to any network. I have also tried changing the wifi band frequencies (2.4 and 5 Ghz individually) to connect to a network but that too does not help. Mobile Data and carrier signal on the other hand work flawlessly, and so does bluetooth connectivity, NFC and personal hotspot (which is why I am very confused). I should also mention that when it fails to connect to a saved wifi network, it occassionally displays "Disabled" under the network SSID (replacing "Saved").
I have changed 3 different ROMs (LOS, stock OOS and No Limits ROM, even replaced the stock kernel with blu_spark r69 when I tried using No Limits and stock OOS to try and see if that fixed the problem), but the phone just won't connect to any detected/saved network using any of those ROMs. I have reverted it fully back to stock now (OOS 4.5.14 and stock kernel and stock recovery) and am still having the same problem.
Sorry if this issue has been solved before and if I am reposting something, but I really need this fixed ASAP and am not able to find a working solution after searching the forums and googling the whole day. Please help me! Thanks!
Edit: finally fixed the problem thanks to Ivints and PeterGuru. Check out the post that Ivints linked below (especially the comments in page 2 of the same)
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=75084870&postcount=108
Eagle-no1 said:
https://forum.xda-developers.com/showpost.php?p=75084870&postcount=108
Click to expand...
Click to collapse
aww you should have totally read this post and the one that Ivints linked to fix your problem, i.e. if you had a similar problem.
Glad that everything is working out for you properly now.
vortex-5 said:
if you want to stay on Nougat look for the O2N revert flash file it's in the Oxygen 5 beta threads that will let you get back to a nougat based rom.
The Oreo update touched other partitions outside of /system so those wifi drivers don't work with Nougat anymore
Click to expand...
Click to collapse
I see... I'll look for that thread and get the flash file! thanks! I'm currently using xXx's No Limits 9.2 OB03 ROM with bluspark 3.2.1 recovery and bluspark r77 (Oneplus 5). The only reason that I feel like reverting back to Nougat is that I want to be able to use Xposed again. So i guess I have that option in hand not too! Thanks, bud!
Hello there my friends, i have a problem with my op5
its about wifi: it doesn t see my wifi anymore. idk why
it s been connected to this wifi 2 years ,even after switching roms kernels, firmwares
and now , it doesnt see the wifi no more, actually it sees it, in `Saved` section, but when i press on it to connect
it says ` not in the area` but my other op6 its connected no problem
and i even tried through qr code, it says ` check ur connection and try again`
Just one add-on cause I was just a few minutes away from formatting my data. My OP5 unlocked rooted, rest stock, wasnt connecting to my home wifis (2,4ghz and 5ghz). I flashed a full ota zip. I deleted wifi bluetooth via backups settings.
But I found out that connecting to an iphone hotspot worked. So I entered manually the network SSID + password although the same network name was already in my wifi list (with marking: "saved"). I then clicked on the second "new" same wifi and it directly connected to my home wifi. Same happened to the 5ghz network. I then deleted the old 2 ones.
I have no idea why this happened, I only tried to get VoLTE/Wifi Call running with the magisk module. This might changed sth but I dont get the connection here since there should be no interference...

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