[Q] i9100 wifi very short range - Galaxy S II Q&A, Help & Troubleshooting

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!

Related

[Q] WiFi Error, not allowing connection after Litening Rom installation

Hi guys
I recently put Litening Rom 1.5 on my SGS 2.
Prior to this the WiFi was working fine and I believe shortly thereafter (can't be sure). Now though the phone defaults to 3G. Under Settings > Wireless and Network > Wi-Fi settings the Wi-Fi box is unchecked with the word "error" underneath "WiFi". Whenever you try checking it, it says "turning on" for about 10seconds before returning to "error".
Anyone else experienced this or any suggestions, all pointers very much appreciated?
Thank you
flash back your CF-Root and your wifi should be working again...
Will try that when I get back home.
Does this mean though that I can't have Litening 1.5? I've not heard of other people experiencing this. The file I oriinally downloaded had 4 parts. Three were pretty obvious in terms of where to sync with Odin i.e. had CSC in the title, TAR file and one called PIT. However, I presumed I should insert all 4 in the relevant boxes of Odin. Was this wrong?
Thaks for the advise so far.
no you can use litening....your step is correct...just try to flash back your cf-root if u using for rooting.....
btw couple of user have same problem in which after flashing modified rom sometimes the wifi not working....so when they flash back cf-root kernel, wifi works again
gchildz said:
... couple of user have same problem in which after flashing modified rom sometimes the wifi not working....so when they flash back cf-root kernel, wifi works again
Click to expand...
Click to collapse
+1 for me. reflashing kernel worked fine
Hmmm!
Well the good news is that reflashing the CF Root worked and I got the WiFi back again. The bad news is, that when I put the phone down and picked it up again 20 mins later, it had gone back to it's old bad habits.
Tried reflashing CF Root again but this time no result.
Looking through the phone I'm wondering if it could be either a confliction between system operations or a dodgy app (less likely this one).
The reason I say this is because at present I have to ways of quickly turning Wi-Fi on and off. 1 is the swipe down action from the top of the home screen, which gives the Litening Blue toggling buttons and the other is residing on my 2nd home screen which are the green toggling buttons which were their before Litening. I could be wrong but both with the problem occurring are not illuminated. Attempting turn WiFi on only illuminates one of these temporarily. Therefore just wondering if on is cancelling out the other?
What would you suggest trying next, perhaps Villian Rom incase it's a Litening thing? If not, any other setting I should try adjusting both on the SGS2 or in Odin etc
i believe your issue is down to installing a corrupt rom...why i say corrupt coz you didnt clear the calvik cache, wipe data when flashing the room etc...well my advise is to start everything from fresh..root your phone with CF-Root and boot in CWM mode..follow the basic step
start clearing cache, wipe data etc and install back the custom rom. or you may try back with official rom see if u face similiar issue...
another option is to upgrade / downgrade your baseband modem....i'm using XXKF2 which is the best in my setup in my country, signal more stable and good connectivity compare to KE7...some user in different country prefer KE7.......coz they got issue with KF2
Thanks Gchildz for your continued assistance.
Ref stable baseband modem what would you suggest in my case: I live in the UK but spend much of my working time in Europe, Middle East and former Soviet Republics? I appreciate that residing in one country would be much easier to determine the baseband but as a frequent traveller, is there a baseband that is all things to most of the places mentioned? To be fair, most of the accommodation is in the middle to upper end of the spectrum and therefore they WiFi I'd be using would usually be setup by an independant company with a reasonable budget, rather than a flee pit hotel with a cheap and nasty router.
Follow-up
Further to last, it would seem that I'm really not having much luck with this.....
I reinstalled CF-Root, then flashed to Villain 1.4 and still the Wi-Fi is not working. I even put on top the optional Modem file and again nothing but this darn "Error".
If I could, I would change the original thread title to "Error msg when trying to turn on WiFi" as it would appear to not be peculiar only to Litening now.
BTW Regarding the corrupted ROM I did clear the cache, factory reset etc 100% this time around. I thought I had last time but could be 100% posititve. I'm using Odin v.183, that shouldn't make a difference should it?

[Q] Wifi not working

Hi all thanks for your help,
Australian user here on virgin.
Basically when I first got the handset I flashed and used villain rom... everything worked fine for a week or two.
Then the wifi just stopped working.. it wouldn't turn on. I would enable it.. it would scan.. scan wouldn't work and the icon would turn off.
and I can't wifi hotspot my 3g connection it just says error.
The problem seemingly went away at random :S:S:S and now has arisen again.
I've tried using batista rom and that didn't help.
Tried searching couldn't find any solutions ((
ok i happen to have this issue last month and i spent 2 damn days to check everything.. but end up it's hardware problem.. you turn on your wifi it will scan a while but then shut off by itself right? if that so i really confirm you need to send back to retail shop.. before that you need to do a nandroid backup and flash back to original rom ( unroot )
trust me man it's the motherboard problem.. check this link for how to unroot..
http://www.jayceooi.com/2011/08/14/how-to-restore-stock-firmware-on-samsung-galaxy-s2-video/
p.s. you need to buy a usb jig to clear the binary.
hope this help

Bell SGS2 3G Data Connectivity Issues

Ok so I've been reading around in a few threads about this but haven't quite found a solution in my case and I think I need a second opinion. I've also posted in other on going threads but it just gets lost in the rabble so.... it now gets it's own thread.
Bought a brand new Bell SGS2 from a dude on Kijiji. It was brand new, still in the box with the plastic all on it. I SIM unlocked it (which required rooting it) and dropped my Rogers SIM chip in.
I can send/receive txt's but 3G data drops frequently and usually happens once I initiate a data session. My test case uses SpeedTest. I've only seen it complete a full test cycle twice... most of the time, it will get the ping, start the download test and 10% in, the data connection drops and 3G/H+ icon disappears. It takes about 1-2 mins for the data connection to return. I've tried market access or web browsing and same thing happens once a data session initiates.
I've installed a slew of modem/ROM combinations via Odin from XXKH3 to XXKI4... nothing... same issue. Seemed worse with KI4 too!
I've tried different APN settings, disabling fast dormancy and specifically trying to enable only HSPA bands. Nothing. Same problem.
I've since reverted back to stock BELL firmware and tried a friends Bell SIM chip and noticed THE SAME thing happening! So this would definitely tell me it's a hardware problem. It's been more than 15 days so Bell won't even talk to me as the return period has passed and I'm not a bell user so screw them.
I guess at this point, I should test my luck with Samsung but it's been rooted and even though I've un-rooted the binary counter shows 2 which means.... I'm screwed for warranty right?
U can reset the binary counter after flashing back to it original state by using jig. Google for galaxy s2 jig
Btw, why dont u just flash original samsung I9100XXKI3 rom? Which provide good modem. Check my signature, 'boot loop', theres a link lead u to installation guide with download link provided. All is there.
Sent from my GT-I9100 using xda premium
I personally found XXKI3 Modem to be best for Bell's SGS2 (currently using it on Telus).
Tried all the modems' including KI3... didn't work.
In recovery mode, fix permission, reboot and check the 3g again.
Try another method, flash cm7 nightly latest version #16. If the problem still exist, thats mean its related to phone's hardware.
Sent from my GT-I9100 using xda premium
neobirdrio said:
In recovery mode, fix permission, reboot and check the 3g again.
Try another method, flash cm7 nightly latest version #16. If the problem still exist, thats mean its related to phone's hardware.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Well I got it new out of the box but I had to SIM unlock it which required rooting and etc....
I did power-volume up-home... got into recovery mode and... there is no option to fix permissions. Keep in mind this is the stock ROM I put back on.
CM7 is another idea.... not against that.
Well. Maybe some failure occured during rooting your phone before. Install rommanager app from the market, open then select flash recovery mode, then select your phone model.. This will give u recovery v4 which will give u more option on recovery mode. This is the easiest way to get more option cwm. U will have fix permission option when u done.
Sent from my GT-I9100 using xda premium
i have the same problem i.e data loses connection. after a fresh flash of stock rom and factory reset , it starts working fine for a week or so and then the shyt happens again . i can tell u , its not a hardware issue, it more like a software issue.
i m not good at android but wen i used to run squid on a linux machine as a proxy server , i recall i had to clear a log file to make data flow possible every few days. i think android has a similar issues some logs files build up or some **** like that.

GS3 Freezes after disconnecting from WiFi

I recently flashed CWM onto my uncles GS3 and rooted his current rom. I made a backup and then tried out a new AOSP rom, which we decided not to keep because my uncle did not like it. But now, returning to the old rooted stock rom, every time the phone disconnects from wifi, it completely freezes up on the lock screen. Pressing the lock button does not shut off the screen and instead just locks it. You are unable to unlock it as the phone completely freezes up. The only way to get into the phone is to double tap home to get into the voice commands, and then go to home from there.
But even after that the phone continues to freeze. I tried another ROM on his phone today, but the problem still persisted a while later. It all happens when the phone is connected to wifi, and you walk out of range. After which the phone starts to freeze up.
I'm totally unsure whats going on. I just flashed the rom again, and we are trying a clean slate with no restoring of any data. It may have started to happen after we installed root browser (just as a guess), but we could be completely wrong.
If this continues again on this rom as well (which is Revolution HD) Im going to go back to completely stock (rom & recovery), and hope it still doesn't persist there. If not then I am out of options, and I have no clue what to do.
Any help would be GREATLY appreciated. We spent so many hours today trying to resolve this.
Thanks!
Usualy WiFi problems are kernel related. Have you tried Siyah or another custom kernel?
If this will not help than returning to stock with all wipes is the best idea, this should resolve your problem. If not, than you can try to reset router or set static IP for s3. Also try to remove WiFi setting for your home network in the phone and set it again manualy or via WPS mode.
i9.0.1.3k galaxy imperator
SirKunon said:
Usualy WiFi problems are kernel related. Have you tried Siyah or another custom kernel?
If this will not help than returning to stock with all wipes is the best idea, this should resolve your problem. If not, than you can try to reset router or set static IP for s3. Also try to remove WiFi setting for your home network in the phone and set it again manualy or via WPS mode.
i9.0.1.3k galaxy imperator
Click to expand...
Click to collapse
Thanks for the reply. This issue has been occurring between two different roms, so can the kernal still be an issue? Its happened with the absolute stock rom (w/ root) and Android HD Revolution.
My uncle said he would play around with the phone and let me know if it freezes again by tomorrow. If it does im going to wipe and stock.
Can anyone show me where to get the stock roms for the i9300?
I've downloaded and tried 3 different ones, but the phone never manages to boot up!
JitinDhillon said:
Can anyone show me where to get the stock roms for the i9300?
I've downloaded and tried 3 different ones, but the phone never manages to boot up!
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1671969
Sent from my GT-I9300 using xda app-developers app
JitinDhillon said:
Can anyone show me where to get the stock roms for the i9300?
I've downloaded and tried 3 different ones, but the phone never manages to boot up!
Click to expand...
Click to collapse
Same problem on Galaxy Note N7000, did your problem resolve by reverting back to stock because I've tried every possible option, to no avail?
juliobahar said:
Same problem on Galaxy Note N7000, did your problem resolve by reverting back to stock because I've tried every possible option, to no avail?
Click to expand...
Click to collapse
Go into recovery and wipe the cache, I believe that was my problem.

[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...

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