[Help] No Wi-Fi Signal - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I have an official firmware 4.3 Galaxy S3 UK Variant with no modifications. For about the past week the phone has decided to drop the connection to my Wi-Fi network if I got more than 3 steps away from the router. My router doesn't seem to be the problem since I have no such problems with any other devices like my laptop and the Galaxy Tab. Seems a strange problem since I have no idea why it has surfaced.
Any help will be helpful.

Reset router, factory reset phone, reflash latest firmware in that order.
After that it's hardware.

boomboomer said:
Reset router, factory reset phone, reflash latest firmware in that order.
After that it's hardware.
Click to expand...
Click to collapse
Thanks for the reply. Done a factory reset which may or may not have fixed the problem, will have to run with it for a while to see the effect. Did have a look around this forum and others for a solution but couldn't find anything apart from disabling wi-fi power save.

Related

Bug: When 3G is enabled, Wi-Fi fails

I have noticed that all of a sudden in the past few hours my device has started to get very hot and when 3G is enabled the device suggests that all Wi-Fi connections are not in range, but when I dsable the mobile data, Wi-Fi connects fine, I was running the official LPM rom, and I decided to update to the latest release to see if there was a problem with the modem files, but the problem is still there on the latest rom.
Is this a known problem with the S2, or have I just got a faulty device?.
*UPDATE*
For anyone who may come across this problem, I have managed to fix it by doing a factory data reset.
If you want to try this yourself, then goto: Settings > Back up and reset > Factory data reset, then click reset device, (I didn't need to format if you are wondering)

[Q] Samsung Galaxy SIII (GT-I9300) International Crashing And Rebooting

Hi, I'm having a curious problem with my S3 and I've been unable to solve it. I watched the "noob" video and tried searching these forums as well as a google search with various combinations of the wording for my problem. Nothing matching my issue turned up, I hope I didn't miss anything.
I recently bought a S3 second hand (yes, i know, i should have known better). It was rooted and running some kind of custom ROM when I first turned it on, but I was willing to deal with it until I double checked the procedure for getting it back to stock and starting again myself (nothing against the original rooting and flashing, just like to know exactly what I'm running).
When I purchased the phone I obviously checked that all of the main things worked - calling, texts, mobile data, wi-fi etc. I get home and connect to my home wi-fi and start checking things out and setting stuff up. The phone randomly rebooted. I carry on after the reboot and about 10 mins later, another restart.
To cut a long story short, there is something wrong with the wi-fi. If I turn off wi-fi in the settings menu and reboot, everything works great. No crashes, no reboots. If however I enable the wi-fi about 50% of the time it will crash while wi-fi is activating. The other 50% of the time, it will crash as it goes into the screen lock (either via timeout or pressing the button).
I've re-flashed to it's stock version of Android (using the 'Samsung GS3 Toolkit and Odin), same problem. Anyone got any ideas?
Thanks in advance
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
boomboomer said:
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
Click to expand...
Click to collapse
After much experimentation and flashing of various files to my phone I have further narrowed the problem. I've still not solved it, but getting closer I feel.
After a clean ROM flash it works like a charm regardless of how much i use the wifi etc. It's only after the first reboot that the trouble starts. It will begin randomly restarting. If I perform a factory reset from recovery mode, it works again, but starts resetting again after a reboot.
Any ideas?

[Q] 4.3 disrupted wifi, now can't fix

Hi all,
I've been happily following the progression of ROM developments, since I got my P7510 (P4WIFI) and sampling a variety of ROM's up through the versions of Android. I recently upgraded to a 4.3 ROM and developed a problem...I could connect to wifi as always, but could not get internet access (wifi connected, but no browsing, play store, weather apps, etc.).
I worked my way back through a number of recovery backups, knowing that in all of them I didn't have this problem, but it remained.
In desperation, I unrooted and returned to stock and the problem was still there! I found a .pit file for the 7510, re-partitioned, formatted the partitions and reloaded the stock ROM...still no change.
Can anyone point me to a solution? I've googled myself stoopid on this one...
Cheers,
PF.
phantomfisho said:
Hi all,
I've been happily following the progression of ROM developments, since I got my P7510 (P4WIFI) and sampling a variety of ROM's up through the versions of Android. I recently upgraded to a 4.3 ROM and developed a problem...I could connect to wifi as always, but could not get internet access (wifi connected, but no browsing, play store, weather apps, etc.).
I worked my way back through a number of recovery backups, knowing that in all of them I didn't have this problem, but it remained.
In desperation, I unrooted and returned to stock and the problem was still there! I found a .pit file for the 7510, re-partitioned, formatted the partitions and reloaded the stock ROM...still no change.
Can anyone point me to a solution? I've googled myself stoopid on this one...
Cheers,
PF.
Click to expand...
Click to collapse
Try to toggle airplane mode on then off..not sure if it will work on our tabs...but it works on my epic 4g touch..this is just a work around though.
What stock did you return to...
I'll look around and see what I can find...
My first thought was it's a router issue. I've had the same thing happen to me and in the end all that was needed was a router reboot.
Gil81 said:
Try to toggle airplane mode on then off..not sure if it will work on our tabs...but it works on my epic 4g touch..this is just a work around though.
What stock did you return to...
I'll look around and see what I can find...
Click to expand...
Click to collapse
Thanks for the suggestion. I tried the airplane mode on/off, but it didn't help.
The stock version I'm on is Build number IMM76D.XWMPF (P7510XWMPF_P7510XSAMP1_HOME.tar.md5)... I believe the correct one for my country...? Not sure if that's a red herring, though. The problem occurred going from 4.2 to 4.3 and has stuck with every restore and rebuild I've tried since.
Benzoman said:
My first thought was it's a router issue. I've had the same thing happen to me and in the end all that was needed was a router reboot.
Click to expand...
Click to collapse
Thanks B-man.
Tried the router reboot, no dice. Also tried connecting to different WAPs and the problem remains. I tried connecting to my SGS4 as a portable hotspot, which was working fine previously...identical problem...

[Q] i9100 wifi very short range

Hi all, my eldest kid's having a problem with the wifi on his S2 i9100 - the wifi used to work fine but has developed a fault.
The phone needs to be very close to a wifi beacon, ie within about 3 metres! So he needs to sit beside the modem to use it. I've searched but not found any solutions other than fitting a new motherboard, for now I've set up an old modem in his room as a network hub and wifi beacon, but any hints would be appreciated.
The phone is stock kernel, I had to fit a new screen some time ago but I've stripped it back down and double checked ariel connections.
Apparantly it was giving problems before the new screen was fitted - during the warranty period - but he didn't bother to tell me then!!
Re-flash the modem ODIN again
mole62 said:
Hi all, my eldest kid's having a problem with the wifi on his S2 i9100 - the wifi used to work fine but has developed a fault.
The phone needs to be very close to a wifi beacon, ie within about 3 metres! So he needs to sit beside the modem to use it. I've searched but not found any solutions other than fitting a new motherboard, for now I've set up an old modem in his room as a network hub and wifi beacon, but any hints would be appreciated.
The phone is stock kernel, I had to fit a new screen some time ago but I've stripped it back down and double checked ariel connections.
Apparantly it was giving problems before the new screen was fitted - during the warranty period - but he didn't bother to tell me then!!
Click to expand...
Click to collapse
If no help, try to format every storage and flash back to the stock ROM.
If still no luck, get back to the SAMSUNG stock ROM it might help!
After all the try outs, if it still doesn't work, maybe the problem is with the Wi-Fi Antenna. You may need to replace it.
Just try to solve through flashing first!
GodShot said:
If no help, try to format every storage and flash back to the stock ROM.
If still no luck, get back to the SAMSUNG stock ROM it might help!
After all the try outs, if it still doesn't work, maybe the problem is with the Wi-Fi Antenna. You may need to replace it.
Just try to solve through flashing first!
Click to expand...
Click to collapse
It's not been modded, sorry I said stock kernel but should have said stock ROM (he won't let me root the phone!), have done factory reset and checked the Wifi antenna connection, the wire itself is unmarked with no sign of being trapped
TRY use ODIN to flash the stock rom again
mole62 said:
It's not been modded, sorry I said stock kernel but should have said stock ROM (he won't let me root the phone!), have done factory reset and checked the Wifi antenna connection, the wire itself is unmarked with no sign of being trapped
Click to expand...
Click to collapse
back up first, and format everything (ROOT is recommended, full wipes are followed)
Try to use ODIN flash tool to install the original ROM, wish you all the best!

Question Pixel 6 wifi bug

I got pixel 6 2 months ago .. when I unboxed I couldn't connect to wifi cause it couldn't find any wifi network ... After February update the problem still remains even after March update... I can connect by putting my device in airplanemode then reboot the device and my device can connect to any wifi without any problem and I can switch airplamode off and still connected ... Who has this bug too van we find a fix for it .. and thanx..
I just got my Pixel 6 about a week ago and don't have this issue. The phone came with the Jan update and I updated to the March update (skipped Feb update because of its issues). Since this is likely a software issue, I'm thinking a factory reset (without restoring from backup) may help you?
K3n0.87 said:
I couldn't connect to wifi cause it couldn't find any wifi network
Click to expand...
Click to collapse
Before the big hassle of resetting the phone, maybe try a smaller hassle first. When a network device has trouble looking up names it could be time to flush the router's DNS cache. For home routers this usually means a factory reset if the firmware doesn't have the option.
have you tried a network reset back to default values?
i cant remember where i saw it, but its a feature
Ive tried every method from network reset to factory reset to full flash firmware .... Nothing happened ... Same problem still there
Is this only happening with one access point? If yes, maybe the AP has a configuration which is not suitable for ur phone.
I personally never experienced any WiFi issues since I have the mobile.
Cheers
Tom
I was going to say much the same - find a friend/family AP to test with to compare.
I tried another 5 ap...still problem

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