Poor wifi connectivity - LG Optimus 4X HD

Hello
I bought the P880 about two weeks ago.
Unfortunately I notice a WiFi issue ; I don't know if this is affecting only my phone or if all p880 have this issue.
At low WiFi signal the download speed is very low compared with other LG phones.
Strange is that the upload speed is always better in the above conditions.
This issue is present only at low WiFi signal on good signal there is no problem.
I don't know if is a HW problem or a SW problem.
Maybe the WiFi chip is not as sensitive as the chips from previous LG phones.
Also is possible to be a SW issue (maybe is something wrong in the WiFi RF calibration)
Or maybe my phone has a fault.
Below is link from a video where I compared WiFi speeds between LGE730/LGP990black/LGP940/LGP880/LGP990white connected to the same network in poor signal conditions.
http://www.youtube.com/watch?v=afEKaHW7-pQ
If any of the users of the p880 notice this symptom please let me know.
Thank you

d0ct0ru said:
Hello
I bought the P880 about two weeks ago.
Unfortunately I notice a WiFi issue ; I don't know if this is affecting only my phone or if all p880 have this issue.
At low WiFi signal the download speed is very low compared with other LG phones.
Strange is that the upload speed is always better in the above conditions.
This issue is present only at low WiFi signal on good signal there is no problem.
I don't know if is a HW problem or a SW problem.
Maybe the WiFi chip is not as sensitive as the chips from previous LG phones.
Also is possible to be a SW issue (maybe is something wrong in the WiFi RF calibration)
Or maybe my phone has a fault.
Below is link from a video where I compared WiFi speeds between LGE730/LGP990black/LGP940/LGP880/LGP990white connected to the same network in poor signal conditions.
http://www.youtube.com/watch?v=afEKaHW7-pQ
If any of the users of the p880 notice this symptom please let me know.
Thank you
Click to expand...
Click to collapse
My phone works quite ok under poor Wi-Fi signal coverage, so I am pretty sure that ur phone has some problems, which ROM are u using?try to flash the ROM again, if you still having this issue, i would recommend you to send ur phone back to LG for repairing.

Go to wifi settings, en press the menu button click advanced and uncheck the box wich says: Avoid poor connections.

dontwan said:
Go to wifi settings, en press the menu button click advanced and uncheck the box wich says: Avoid poor connections.
Click to expand...
Click to collapse
I already tried that option.
Unfortunately no luck

d0ct0ru said:
I already tried that option.
Unfortunately no luck
Click to expand...
Click to collapse
I have the same issue. At the same place my previous Huawei Ideos X5 got stable connection although poor, but this Optimus 4x gets on and off connection.

This poor wifi connectivity is very annoying.
Unfortunately I do not have the possibility to exchange the phone because I don't have waranty.
Now after some good weeks spend with the P880 I also noticed the latency over wifi is high.
For example the ping on other phone was 12ms and on the P880 is always greater then 180ms.
I hope the optimus G will be released soon in Europe and hopefully then I will get rid of this wifi problem

I'm now with a ping of almost 1900ms, but I'm in a shopping centre almost without signal At home generally is around 12ms.
Sent from my LG-P880 using xda app-developers app

Related

Possible fix to reception issues (UPDATE SOON)

Hey guys, I just increased my overall signal for my htc incredible S to 79dBm.
Now i have 4 bars instead of 2 .
Fix is easy:
You need a strip of foil, scissors and tape.
Now my palm doesn't decrease signal anymore.
I'm just wondering what i can use instead of foil, which one has less resistance.
I know gold and silver does, but hey those are way too expensive .
After getting enough responses, i will rewrite this and add [TUTORIAL] line.
E: Image resized
UPDATED:
I'm using latest radio now, signal still low without attached cover modification, but with it I get significant signal increase.
I post step by step tutorial later! Stay tuned guys.
Is it possible to use this solution for WiFi problems as well?
If you could elaborate on what you actually did?
And what was the problem you had that prompted this?
i don't seem to be having any problem with reception atm...
Since the GB update, which I installed yesterday, I keep loosing my WiFi signal. Before the update I had a good reception. But when I hold the mobile now, the signal drops and then the icon of WiFi disappears.
Also the gsm reception seems to be worse then before.
I'm going to try the solution above and see if it helps.
_Flea_ said:
Is it possible to use this solution for WiFi problems as well?
Click to expand...
Click to collapse
Yes, Wi-Fi antenna is upper.
letmedanz said:
If you could elaborate on what you actually did?
And what was the problem you had that prompted this?
i don't seem to be having any problem with reception atm...
Click to expand...
Click to collapse
I brought antenna up from palm location (Otherwise signal decreased dramatically), I'm just thinking what material have better +dBm, Getting +10dBm would be awesome .
Why i made this topic was comparison with my and my friend's phone. He have Nokia Xpressmusic, i have Inc S, and he had 5 of 5, i had 1 out of 4 atm. I try to find out material resistances. Copper wire or alu must be OK.
Gotta go to football match, See ya later!
henrylife said:
Yes, Wi-Fi antenna is upper.
Click to expand...
Click to collapse
Going to try it now!
FIX for wifi problems
_Flea_ said:
Since the GB update, which I installed yesterday, I keep loosing my WiFi signal. Before the update I had a good reception. But when I hold the mobile now, the signal drops and then the icon of WiFi disappears.
Also the gsm reception seems to be worse then before.
I'm going to try the solution above and see if it helps.
Click to expand...
Click to collapse
For WIFI problems go to
Settings> Wireless & networks > Wi-Fi Settings> Press the menu button > Advanced and then select Best Wi-Fi performance.
Enes_81 said:
For WIFI problems go to
Settings> Wireless & networks > Wi-Fi Settings> Press the menu button > Advanced and then select Best Wi-Fi performance.
Click to expand...
Click to collapse
Already tried that. Very bad reception. Keep losing signal. Doesn't reconnect
Looks like it has some kind of deathgrip.
_Flea_ said:
Already tried that. Very bad reception. Keep losing signal. Doesn't reconnect
Looks like it has some kind of deathgrip.
Click to expand...
Click to collapse
Try without holding your palm on cover, still poor signal?
And how many metres is your router away, is this forced with 100% output power?`
Try with other devices, if still persists then this may be caused from corrupted Radio.
Hope I helped.
henrylife said:
Try without holding your palm on cover, still poor signal?
And how many metres is your router away, is this forced with 100% output power?`
Try with other devices, if still persists then this may be caused from corrupted Radio.
Hope I helped.
Click to expand...
Click to collapse
It's quite a distances to the router.
Is there a possibility to reflash the phone?
Death grip here too. Would appreciate a solution.
Select settings: wireless & networks: mobile networks: gsm and wcdma.
Next select settings: about phone: network.
Hold in hand and see connection drop to 0asu eventually.
incredible s
_Flea_ said:
Since the GB update, which I installed yesterday, I keep loosing my WiFi signal. Before the update I had a good reception. But when I hold the mobile now, the signal drops and then the icon of WiFi disappears.
Also the gsm reception seems to be worse then before.
I'm going to try the solution above and see if it helps.
Click to expand...
Click to collapse
The GB update seems to have raised the "signal strength minimum value", so that it shuts down wi-fi at a higher signal strength than on 2.2.
it seems to be part of android 2.3
This should explain why when I tested Incredible S (with 2.2) and the Desire S (with 2.3) side by side, the Desire S dropped the wifi connection while the incredible S held the connection. (I was testing on a network with very poor signal)
Now, as it too got 2.3 - it seems the Incredible S has gotten as "bad" as the desire s.......
I hope many people report this to HTC. I did.
_Flea_ said:
Since the GB update, which I installed yesterday, I keep loosing my WiFi signal. Before the update I had a good reception. But when I hold the mobile now, the signal drops and then the icon of WiFi disappears.
Also the gsm reception seems to be worse then before.
I'm going to try the solution above and see if it helps.
Click to expand...
Click to collapse
PLease tell me if it helped.
It looks like the reception is better in the house. So yes it works.
In my bedroom I went from 2 bars to 3 bars.
Could any of you who have the wi-fi issue try this with a different router?
It is possible the router may be faulty, or as already pointed out, the distance may be over what the router covers.
if not, this seems to be quite an issue which will need to be looked into
Ok, I´ve done a hard reset and it seems to be improved.
WiFi signal switches from fair to good and back. So I´m fine with it.
letmedanz said:
Could any of you who have the wi-fi issue try this with a different router?
It is possible the router may be faulty, or as already pointed out, the distance may be over what the router covers.
if not, this seems to be quite an issue which will need to be looked into
Click to expand...
Click to collapse
No no, before the update, I had connection in my bed. After update - same location - wifi disconnects. Signal strenght seems the same.
It's not the router.....
Guys, we have the same problem with the Desire S (chech the forums) after the 2.3.3 update. It's very likely software related (phone dropping the connect after it's under certain signal value ... viva la HTC update).
Check http://forum.xda-developers.com/showthread.php?t=1061502&page=3
I tried it but it doesn't seem to affect my signal strengt. Signal still changes between 51 dBm and 88 dBm.
better conductor
henrylife said:
Hey guys, I just increased my overall signal for my htc incredible S to 79dBm.
Now i have 4 bars instead of 2 .
Fix is easy:
You need a strip of foil, scissors and tape.
Now my palm doesn't decrease signal anymore.
I'm just wondering what i can use instead of foil, which one has less resistance.
I know gold and silver does, but hey those are way too expensive .
After getting enough responses, i will rewrite this and add [TUTORIAL] line.
E: Image resized
Click to expand...
Click to collapse
i Believe copper will work much better but its much harder to find in a thin "foil" form
btw i havnt found a design that increases reception yet but if you hold the phone upside down it helps

[Q] Poor wifi connectivity. Wireless Antenna problems?

Hi, i'm the owner of an "unlucky" lg optimus 2x
I've got a lot of problems with the wifi connectivity which is always really bad (i can use it only when i'm at max 30-50m far away from my router) so i guess this phone can have some problems with the wifi antenna.
I already tried to use it also with some free city hotspot, but the connectivity is always poor.
Anyone know where is located or how to change it ?
Does the 2x wifi antenna is the one located at the bottom of the phone (or that is the gsm one, or they both use the same) ?
In fact i already changed the touchscreen and the lcd pad so i think this is a faulty phone, but i'm not the first owner of this unit so i can't send it back to lg in warranty.
I already tried changing the baseband and the rom (i tried a cyanogen 7).
Now i'm using a stock v20q rom plus 1120 baseband.
Thanks in advance for any help and sorry for my poor english
Well, I have to say I dont think that 30 - 50 metres is low radius. The signal mostly depends on router and the surroinding area of router. Of course, the antenna of the phone is weaker then NTB for example.
In my opinion, the antenna is just right
Sent from my Optimus 2X using Tapatalk 2
Well, depending on the location, 30-50m can be quite far for wifi if you have walls in betwenn
Do you have a laptop?
If yes, can you try comparing the dBm readings from a scanner program like NetStumbler with those from your phone (use an app like Wifi Analyzer)?
For experimenting:
If your router has more than 1 antenna, try to have them in 90° angles to each other
Try other settings: b/g/n(20MHz)/n(40MHz) ot other channels: take the one that no one else has (see the output of the wifi scanner) and the standard ones (1,6,12)
Hi guys and thanks for your kind replies
Well i wrote 30-50m but in fact i was thinking at 3-5 m !!! (i can use the wifi connection only when i'm in the room where i got my router and the connection is still weak).
I also have a optimus one and with that phone i never had such problems
The gsm and bluetooth connection seems ok. I gonna try with netstumbler and wifi analyzer anyway
Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A

Improve WiFi Reception

My GT-I9070P seems to have weak wifi reception. Next to a laptop receiving 5 bars from a hotspot, my phone is only getting one or two bars from the same hotspot. In addition, many other SSIDs that my laptop see my phone does not. Is there any way to improve the wifi reception?
Well , I have no problems here , perhaps your WiFi hardware is defective ?
Might also be a software issue .
I'm the only guy b*tch you'll ever find in XDA.
MrTooPhone said:
My GT-I9070P seems to have weak wifi reception. Next to a laptop receiving 5 bars from a hotspot, my phone is only getting one or two bars from the same hotspot. In addition, many other SSIDs that my laptop see my phone does not. Is there any way to improve the wifi reception?
Click to expand...
Click to collapse
Your phone receiver is smaller than the one your notebook, so seeing difference in reception isn't a fair comparison because your notebook will always win.
The same about not seeing all ssids.
Nothing much to do about reception, but there are a couple of tweaks for networking posted on the forums.
Sent from my GT-I9070 using Tapatalk 2
Mine has issues too. I noticed it improved a little with custom rom JetMod But then I upgraded to JB stock with latest CoCore kernel and its back again to where it started.
I once found a website where it said that of you enter maintenance mode you can adjust the power saving mode of the wifi But when I tried That stock ROM wouldnt let me change the setting. I hope my experience is of any help.
Sent from my GT-I9070 using xda app-developers app

WiFi Fix (Maybe) What do you think?

One guy on Sony forum post this fix
i fix wifi with solution
Please root your phone before edit
Open the file /system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini in text editor
Change ConnectivityThresholdDBM=-87 to ConnectivityThresholdDBM=-100
reboot
no problem about battery drain.
my fw is 2.254
Click to expand...
Click to collapse
I dont know if it works or not. Im testing it now and i post it to allow you try it.
This has been posted before in general section and some report it works some not.
Sent from my C5303 using xda premium
It helps I think.
My understanding is that this is the level when the phone decides that wifi is too weak and it should switch to a data signal.
I don’t suffer from range issues – the SP has as good, if not better range than all the other wireless devices in my house. However connecting in the first place can be a right pain.
I had an xperia ray before and it also did what I’m about to describe (but connected more reliably) – in essence when wifi is ‘connecting’ the signal strength will go from excellent/good/fair to poor or even nothing. It fails to connect and I’m told there’s an authentication issue.
This tells me that either my router reduces its wifi signal, or my phone is less able to receive the signal during this stage. As my router is old (6/7 years), I’m inclined to think it’s the router – Sony probably test their devices on more recent hardware.
With these things in mind what this tweak does, is hold on to the wifi signal for longer before switching to a data connection, making connecting to wifi more likely.
In my case after applying this hack the signal still drops whilst ‘connecting/authenticating’ but connects more frequently, and the signal goes back up again once connection is made.
I must also say that wifi problems are not unique to Sony devices and having had a look elsewhere for a solution I discovered that many other phones, from a variety of manufacturers, have similar issues. One of the big US Universities even wrote reports about how the Android OS was at fault for overloading their wireless network with repeated DHCP requests.
Anyway before you apply the tweak try enabling ‘auto IP support’ in advanced wireless settings. Similarly it doesn’t make sense to have ‘avoid poor connections’ enabled.
It does work for me
juansuperuser said:
One guy on Sony forum post this fix
I dont know if it works or not. Im testing it now and i post it to allow you try it.
Click to expand...
Click to collapse
I changed the file as well. It worked for me, now it doesn't disconnect randomly on weak signals..couple of inches range increased.
Didnt work for me.
Deathless93 said:
Didnt work for me.
Click to expand...
Click to collapse
Thanks for the answers. I have been testing this fix and i can say it works for me. Where i had 1 weak signal now i have 2 or 1 but a steady one. Now i can move in my house without losing WiFi.
Remember that you can change -100 and test it with more (-300) but I supouse the battery will last less. Otherwise you can change to -90 or -95 if you think WiFi its enough good.
Very good. Saw significant improvement in the areas of the house that I had a problem with the connection before. C5303 on 12.0.A.1.257.
Thanks

Wifi performance

I'm curious how your wifi is performing because i'm getting pretty bad wifi reception and starting to think it's maybe a hardware fault.
On my old phone (One X) i'm getting full bars and a link speed of 72Mbps allmost everywhere in my livingroom.
On the One mini i have never had 72Mbps (max 54 and mostly 26 or lower) and frequently loose wifi connection in my house where the One X easally maintains a strong connection.
The same is with the bleutooth connection. When streaming music I only have to touch the top of the right corner and things start to stutter.
What is your experience? Please let me know so I know if i have to send it for repair.
Carlovn said:
I'm curious how your wifi is performing because i'm getting pretty bad wifi reception and starting to think it's maybe a hardware fault.
On my old phone (One X) i'm getting full bars and a link speed of 72Mbps allmost everywhere in my livingroom.
On the One mini i have never had 72Mbps (max 54 and mostly 26 or lower) and frequently loose wifi connection in my house where the One X easally maintains a strong connection.
The same is with the bleutooth connection. When streaming music I only have to touch the top of the right corner and things start to stutter.
What is your experience? Please let me know so I know if i have to send it for repair.
Click to expand...
Click to collapse
It does sound bit strange. have you tried going into advance setting and put wifi optimization on?
kativiti said:
It does sound bit strange. have you tried going into advance setting and put wifi optimization on?
Click to expand...
Click to collapse
Thanks for responding. I have tried that and it didn't seem te make a differnce.
What kind of link speeds are you getting?
You can check that by tapping on your wifi SSID when you are connected.
Thanks!
According to my phone, 65Mbps
Sent from my HTC One mini 2 using XDA Free mobile app
I have sent my device in for repair. I received a new phone and all problems are solved I have steady connection now

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