Wifi and Hotspot not working - Galaxy S3 Neo Q&A, Help & Troubleshooting

I flashed CM12 on my S3 Neo (I9300I) using CWM then after a few weeks, I decided to flash the Stock ROM (I9300IXWUBNL1_I9300IOXEBNL2_SER.zip) and then wiped data and cache. After flashed, Wi-Fi does not turn on. Even the Hotspot. When I slide the switch, it reverts back instantly to off. I flashed again another firmware, but of the same device model (I9300IUBUBNK2_I9300IZTOBNK2_ZTO.zip) and wiped data and cache again. Still no luck. Still dosen't turn on. What could have happened?

-AgentMinatoX14- said:
I flashed CM12 on my S3 Neo (I9300I) using CWM then after a few weeks, I decided to flash the Stock ROM (I9300IXWUBNL1_I9300IOXEBNL2_SER.zip) and then wiped data and cache. After flashed, Wi-Fi does not turn on. Even the Hotspot. When I slide the switch, it reverts back instantly to off. I flashed again another firmware, but of the same device model (I9300IUBUBNK2_I9300IZTOBNK2_ZTO.zip) and wiped data and cache again. Still no luck. Still dosen't turn on. What could have happened?
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Click to collapse
I'm in a similar boat. after flashing a full rom (roughly 980mb), I found that my wifi.kr files apparently need to be replaced. i'm using a I9300IXXUBNH3, and am having trouble finding the files without having to completely wipe and image the phone, root, grab the files, then install recovery and install the rom... it's a bit drawn out for my liking.

Have you got wipe dalvik cache and cache, and when the problem stays, have you got reflash the rom?
When the problem stays, try an diffrent rom. I didnĀ“t know, that your Device is rooted.

Related

HELP!

ok so i was trying to get LTE option back on my phone and flashed the stock rom twice. didnt work. thought it could need a factory reset. didnt fix it. tried flashing stock another 2 times. still no LTE.
flashed TWRP recovery did a wipe inc system, data and cache. flashed stock in odin.
now wont boot up. gets stuck at the S4 logo.
trying again to flash the stock rom in odin will post soon if it starts up. but if not what do I do?
also how come i couldnt get LTE back in mobile networks?
only had the phone for 2 days LOL
came from the s2 and s3 so have a fair bit of knowledge about these.
thanks
EDIT: NOPE still wont boot
have you tried to wipe data/factory reset after odin i suppose it won't if not also try a Rom with another build either a complete stock on odin or a pre rooted one
ok so after a hour of playing with it i fixed it. I used wipe data factory reset and it just booted up lol.
back on omega rom now

[Q] Phone restarting and can't connect

HELP! I've been using my LG G2 for around 3 months with mo problems at all. I'm rooted with Janjan's custom rom. This morning my phone froze, so i rebooted it. From then on i could not connect to my mobile network as well as Wifi networks. I can see the phone is also scanning the media files, and i cannot open any programs. The phone then restarts itself after about 20 seconds. If i turn the screen off, i cannot turn it back on.
I have already tried restoring to a backup i had on CWM, but the same thing happens.
Has anybody experienced this before? Any suggestions on what to do????
Thanks!
**Edit.
Was able to snap this pic before it rebooted on me again. The "Error" message, stays on even if i exit Settings.
Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.
MalignantQuechnitlan said:
Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.
Click to expand...
Click to collapse
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.
djlpio said:
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.
Click to expand...
Click to collapse
Hmm, that is odd. Do you have a back up of the phone before you changed anything? i.e. a stock backup?
because it seem you may have wiped your EFS partition by accident.
No i don't have any backups, The only back up i had was a stable version of the ROM i was using. And it seems like when i reverted back to stock, all the files in the internal memory is erased as well.

Unable to use as a phone after reflashing

Ugh, I've been flashing since the HTC Touch Elf but I'm finally stuck.
I was using Bobcat, but it wasn't keeping the 3g when the screen turned off, post v13. So I flashed Phoenix which had a troubleshoot for that - which I followed and it worked. Flash the new modem zip using Odin. Thing is, without realising I didn't allow it to finish. I booted up and 3g remained connected fine, so "obviously" it worked, though I never tried to call in or out last night.
I got a voice mail this morning and found I couldn't hear anything during a call - which took forever to connect. Figuring a slow rom, I downloaded and flashed Foxhound - still no calls. So I try the modems again, letting it sit for a few extra minutes until Odor says Pass. But it still doesn't work... It's also quite slow, as Phoenix was.
Any help?
Flash the stock rom again via odin.
Get the stock rom from sammobile
Sent from my GT-I9500 using XDA Premium 4 mobile app
Not what I'd like to do, but I'll give it a try. Downloading now.
I've done it and it still doesn't work. And the camera also doesn't work... Although the camera thing only started after I flashed the I9505XXUFNC9_GSM_LTE_Modems. Not sure that would be the reason for it to work or not, but that's what happened.
I've tried the above modems and I9505XXUFNB9_GSM_LTE_Modems, flashing other firmware in recovery and reflashing the original firmware using Odin.
Have I completely naffed my phone?
Oh, and also the wifi doesn't work since returning it to EE's latest firmware...
Nobody have any ideas?
I had a similair problem. I assume you are still on the old bootloader?
This is what I did:
1. Full wipe in cwm
2. Advanced wipe > wipe /system (this will wipe everything, so it also wipes your sd card).
3. Flash the phoenix rom
4. Flash the modem (I use MJ5)
5. Make sure the modem actually flashed. Check it in settings > general > phone information.
That did the trick for me. Make sure you have proper backups and also a good backup of your efs.
As I didn't have Wifi I had to install Clockworkmod Recovery via Odin. So I wiped everything, but the option was to wipe Cache, wipe System and wipe data. There was also wipe data and data/ (SD card), but I didn't do that one as I don't think the problem was down to the memory card. I flashed Foxhound, as that's what was on my memory card already, put the XXUFNC9 modem on using Odin and booted up. It now connects to 3G and wifi.
However, I tried to call my house and it took about 30 seconds to connect, then when my wife picked up neither of us could hear each other. So it still doesn't work...
When going into download mode, it doesn't say anything about Knox, so yes I'm on the old bootloader still. I don't have a backup of my efs, but I have a complete backup of everything from using Titanium Backup before I tried flashing away from Bobcat.
I noticed something very strange. When I go to About and Phone Information, the phone number shown isn't my number. The number that showed up on the house phone was my correct phone number. Is this related?
Acelister said:
As I didn't have Wifi I had to install Clockworkmod Recovery via Odin. So I wiped everything, but the option was to wipe Cache, wipe System and wipe data. There was also wipe data and data/ (SD card), but I didn't do that one as I don't think the problem was down to the memory card. I flashed Foxhound, as that's what was on my memory card already, put the XXUFNC9 modem on using Odin and booted up. It now connects to 3G and wifi.
However, I tried to call my house and it took about 30 seconds to connect, then when my wife picked up neither of us could hear each other. So it still doesn't work...
When going into download mode, it doesn't say anything about Knox, so yes I'm on the old bootloader still. I don't have a backup of my efs, but I have a complete backup of everything from using Titanium Backup before I tried flashing away from Bobcat.
I noticed something very strange. When I go to About and Phone Information, the phone number shown isn't my number. The number that showed up on the house phone was my correct phone number. Is this related?
Click to expand...
Click to collapse
I had the same problem as you had. The procedure that I descriped fixed them for me. My guess is there are some files on your sd card that somehow interfere.
I will try doing the same again, but with a different formatted memory card.
Flashed the new bootloader, problem solved.

Stuck in recovery mode loop

Hi guys
i have a custom rom, nougat 7.1 installed and its been working fine. last night i installed an aftermarket battery replacement as the other wasnt holding a charge. after turning on by simply pressing the power switch it went straight to twrp recovery and kept doing so. this morning i cleared the cache and data to start again which was a bit of hassle and it then booted fine. however, i just restarted again and its in the same loop.
i have checked for any obvious obstruction under the rear case that could be pressing against the volume keys but there isnt anything.
any ideas?
cheers
Did you try to reflash everything, e.g. also the ROM?
AndDiSa said:
Did you try to reflash everything, e.g. also the ROM?
Click to expand...
Click to collapse
i didnt really want to do that unless i really had to. as i say, before the battery swap it was fine
But if you cleared already cache *and* data all your data is already lost, e.g. it's like a factory reset. So flashing a new ROM will not worse the situation ...
AndDiSa said:
But if you cleared already cache *and* data all your data is already lost, e.g. it's like a factory reset. So flashing a new ROM will not worse the situation ...
Click to expand...
Click to collapse
well, i just went to restart and was going to reinstall but it booted properly. i then did a restart and again it booted fine. i dont get it.

volume and sound issue

Ever since I got this phone even on stock firmware, if I turn the phone off and then turn back on my volume and sound go away. This is not including reboots. phone works fine after a normal reboot. It is just when I turn it off to charge and then turn back on. So I decided to go ahead and flash havoc ROM and I'm still having the same issues. Anyone else experiencing this?
In order for me to fix this I have to dirty flash the zip again.
Sometimes just accessing twrp I get this issue.
Edit... This is happening on every rom I flash
2 edit... sometimes clearing dalvik and cache brings back sound (while rooted running any ROM) and even on stock firmwares , turning off phone I will eventually have to reboot recovery(stock) and wipe data, dalvik and or cache. Weird issue! Anyone?

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