Hi experts and xperia users.
I went thru this forum and looked for the same subjected question but had no luck.
Pls advise me how to resolve my wifi problem. I stood very close to a hotel access point and my m4 only discover 2 bars of signal,compare to my xi***I it got full bars. Wifi analyzer said 30db but m4 only 50 something
I tried move to another space in my home and school, restaurant with various AP brands my m4 still got bad signal,even the M4 placed very close with AP.
Pls don't tell me to make static IP, or change AP configuration.
Pls help.
Maybe your m4 has problem scanning wifi.
You really need expert to help you out.
Sent from my E2363 using Tapatalk
mfpss95134 said:
Maybe your m4 has problem scanning wifi.
You really need expert to help you out.
Sent from my E2363 using Tapatalk
Click to expand...
Click to collapse
I do need it but not sending my phone to sony service center local support, extremely worst suppot.
rest factory your phone, Go to Settings >WIFI >advanced wifi > set WIFI frequency band in 2.4 GHz only... or just 5GHz.
roxandn said:
rest factory your phone, Go to Settings >WIFI >advanced wifi > set WIFI frequency band in 2.4 GHz only... or just 5GHz.
Click to expand...
Click to collapse
I did, still persists.
Is it hardware issue?
xmbohx said:
I did, still persists.
Is it hardware issue?
Click to expand...
Click to collapse
Probably... I had exactly the same issue... veeeeery poor signal.
On rear(left-up side) are two plates, which conecting to wifi antena. I think that are disconnected. I resolve this by replacing rear cover.
//sorry for my eng.
outofmemory13 said:
Probably... I had exactly the same issue... veeeeery poor signal.
On rear(left-up side) are two plates, which conecting to wifi antena. I think that are disconnected. I resolve this by replacing rear cover.
//sorry for my eng.
Click to expand...
Click to collapse
Thanks for ur reply. I attach my m4 picture from back side.
CMMIW, where are two plates you mean, @outofmemory13 ?
And you did replaced the whole back side cover?
xmbohx said:
Thanks for ur reply. I attach my m4 picture from back side.
CMMIW, where are two plates you mean, @outofmemory13 ?
And you did replaced the whole back side cover?
Click to expand...
Click to collapse
I meant:
imgur.com/SQf4aYD
After replacing rear(back) cover Wifi works perfect. btw. I've bought black cover(my M4 is white) - looks awesome
imgur.com/VU6OHuT
I tried to repair this w/o replacing - Yeah, it worked, signal is better, but still poor. Cleaning the plates gives no results. Idk why.
It's not hard. After replace m4 is still waterproof (tested).
outofmemory13 said:
I meant:
imgur.com/SQf4aYD
After replacing rear(back) cover Wifi works perfect. btw. I've bought black cover(my M4 is white) - looks awesome
imgur.com/VU6OHuT
I tried to repair this w/o replacing - Yeah, it worked, signal is better, but still poor. Cleaning the plates gives no results. Idk why.
It's not hard. After replace m4 is still waterproof (tested).
Click to expand...
Click to collapse
I cant open your image, anyway i sent you PM.
Deleted
@outofmemory13 finally i am able to open ur image. However it is not clear enaugh for me,sorry. So:
1. Is it located at top left of the back side?
2. You replaced the back cover and wifi signal work better?
Exactly.
on the back cover there's black sticker - this is NFC antena shared with Wi-Fi.
w/o antena the wifi works... just like IrDa in old phone So... That's why I'm think, that is problem with connection between cover and main PCB.
The antena maybe is damaged by default. Also I forget to mention that the antena maybe doesn't adhere into cover(check this by pressing this place* with little pressure - if signal is better - let me know)
*top left > 1cm down.
It does not work for me, even I take off the rear case (without case) no improvement, still weak.
xmbohx said:
It does not work for me, even I take off the rear case (without case) no improvement, still weak.
Click to expand...
Click to collapse
Yeah, without the rear case it'll works like this.... even worse.
1. use a multimeter to check that two copper plates have around 0 resistance.
2. It can be weird, but try add some tinfoil(into the plates) to improve connection between cover and pcb. Carefully. And check again.
If doesn't work - it's a problem with Wi-Fi sensor. Unrepairable.
I've fixed 3 M4 with the same problem so far. Can't belive, that in this case all my instructions aren't working, maybe there's another issue, I guess... Anyway, check it and show the result.
#I don't like English... case, case... the same words and another meaning...
I have no luck on this and plan so sell the phone thank you all for the advices.
Related
Hello,
I have bought an used xperia ultra off the internet.
The problem is that outdoor I have no issue with my signal. But when I go inside the signal drops and it shows me NO NETWORK.
Is there any solution for this ?
Thank you in advance !
I have tried software update and hard reset with no luck ...
Depends on the type of house you're living in and the general coverage in your area. I live in a concrete apartment and i have excellent coverage, so it might be the coverage in your area? How many lines do you have when you're outside?
Now I am using my sim card in a nexus 4 and i get full signal in the same place where my xperia doesn't.
The cell tower is not very far away ...
So, the house is not a problem ...
P.s : nexus 4 has full signal on wcdma but xperia has no signal/poor signal even on edge/gprs ...
As you can see in the picture, every phone tested with that sim has full signal in the same place. But not the xperia ... I think it's "blessed" ...
Sent from my Nexus 4 using Tapatalk 2
Weird. I get better signal than ever with my Z Ultra. Inside on the countryside right now where my signal always was 1-2 bars with most of my other Androids and i often lost the signal temporarily. I'm sitting on full 4 bars now with my Z. Amazing!
Sent from my Z Ultra
Well you are a lucky man, congratulations. My problem is that I bought the phone in a different country and I'm pretty sure that the folks here in my country will deny the warranty ... And going back in the country of purchase is not an option.
Does anyone have a Modem/Baseband that could be flashed to see if the problem still persists?
Thank you !
Sent from my Nexus 4 using Tapatalk 2
Problem solved ...
For all of you that experience the same problem, take a hot air gun, heat up the back of the phone, and slowly take it off with a suction cup.
After doing that, check the cable that comes from the antenna to the motherboard. Mine was loose, and I hat to fit it back in it's correct place.
After powering on the phone, the signal is OK !
Attached a photo below:
And a video with disassembly instructions.
Hope that helps you.
Hi there - by antenna, do you mean the whitish cable on the right-most section of your picture?
Another thing, did the back cover stay attached perfectly after you've re-assembled it? I mean using the heat gun on it didn't make it permanently loose?
What about water-proofing?
Thanks!
Al3xxxinho said:
Problem solved ...
For all of you that experience the same problem, take a hot air gun, heat up the back of the phone, and slowly take it off with a suction cup.
After doing that, check the cable that comes from the antenna to the motherboard. Mine was loose, and I hat to fit it back in it's correct place.
After powering on the phone, the signal is OK !
Attached a photo below:
View attachment 2552387
And a video with disassembly instructions.
Hope that helps you.
Click to expand...
Click to collapse
Same here. Will this solution not affect the waterproof of the phone? Anyone has any other solutions?
Sent from my C6833 using xda app-developers app
Wouldn't it be easier if you just send it in to Sony?
It would be, but I bought it on ebay and I don't have receipt for it. The other thing is I noticed when the phone is in standby it has full signal when i start using it the signal bars are going down.
Sent from my C6833 using xda app-developers app
neverborn said:
Hi there - by antenna, do you mean the whitish cable on the right-most section of your picture?
Another thing, did the back cover stay attached perfectly after you've re-assembled it? I mean using the heat gun on it didn't make it permanently loose?
What about water-proofing?
Thanks!
Click to expand...
Click to collapse
Hi. Finally it's working and yes the cable was loose. It's really easy to open the phone. It's the cable on right it's grey and silver ( like on picture) You can buy new original adhesive tape on ebay for £5. I don't know about waterproofness after. I will try when I will get new phone. Hopefully ultra2
Sent from my C6833 using xda app-developers app
I'm surprised you'd even want a new one after dealing with that. Hopefully I don't need the original receipt to get warranty service. I hate the idea of opening up a new phone to solve a problem with a home remedy. As you can tell I am suffering from the same issue.
3G and 4G can have poor reception indoors. See if switching to 2G only helps, even if you don't have mobile data enabled.
It was the only way to normally use the phone. It took 5-10 min and now it's working perfect. Try with Sony service centre, I hope they will do it for you. It's best phone ever, I hope they will make ultra 2.
Sent from my C6833 using XDA Free mobile app
I have the same issue
Al3xxxinho said:
Now I am using my sim card in a nexus 4 and i get full signal in the same place where my xperia doesn't.
The cell tower is not very far away ...
So, the house is not a problem ...
P.s : nexus 4 has full signal on wcdma but xperia has no signal/poor signal even on edge/gprs ...
As you can see in the picture, every phone tested with that sim has full signal in the same place. But not the xperia ... I think it's "blessed" ...
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I have exactly the same issue
aaand now I have the same issue. ****ING hell...*****phone ...eh gonna send it in someday next week. I don't have the receipt here so got to go to my other apartment first
a weird solution that worked for me
Hi guys I had the same issue and solved it finally
First I tried your method and checked the antenna cable mine was already in place and fine so I was depressed and closed the phone back.I tried every thing else rebooting,repairing through companion,updating the rom, changing sim, changing network and every thing else. Finally I took phone into service they returned it without the issue and I was pleased too much, but same issue returned after 2 weeks
So I tried a stupid thing that worked like a charm I put 2 pieces of paper under the sim and above the sim metal holder and inserted the sim back then the issue was solved and network is like any other phone finally
It worked for me and I think it may worse a try
Mindgasm
I Just bought my New Z ultra Last month. At beginning i thought that my Z ultra poor signal were normal (90-110 dbm) until I compare to my friend's Z ultra. I realized there's something wrong! I was hopeless till I found this thread. Thanks to Al3xxxinho it worked! The antennA were loose also. Easy to open and I didnt see it Will break the warranty seal if you open, and the back cover still fit perfectly. Now I enjoy full signal bar. :laugh::laugh::laugh:
What I did was chanel the preferred network type to wcdma
Al3xxxinho said:
Hello,
I have bought an used xperia ultra off the internet.
The problem is that outdoor I have no issue with my signal. But when I go inside the signal drops and it shows me NO NETWORK.
Is there any solution for this ?
Thank you in advance !
I have tried software update and hard reset with no luck ...
Click to expand...
Click to collapse
I was getting poor signal too but when I went into settings-->more-->mobile networks-->preferred network type and change from LTE(preferred) to wcdma(preferred) and my signal went way up
Hello,
i just got my Z2 and well i have drm fix xposed and some mods installed and one time i just held device and violaa no signal on it, on lockscreen it shows No Service and there empty signal bar, but there`s IMEI present and untouched so no IMEI problem...
i tried Reflash stock rom LP and KK too with flashtools but still no success... so what a heck to do?
P.S of course i searched everything in Google but i got nothing, still could not find any solution
Prerevision said:
Hello,
i just got my Z2 and well i have drm fix xposed and some mods installed and one time i just held device and violaa no signal on it, on lockscreen it shows No Service and there empty signal bar, but there`s IMEI present and untouched so no IMEI problem...
i tried Reflash stock rom LP and KK too with flashtools but still no success... so what a heck to do?
P.S of course i searched everything in Google but i got nothing, still could not find any solution
Click to expand...
Click to collapse
Strange issue... Does your Z2 ask you for a PIN code when you turn it on or not?
Bruce666 said:
Strange issue... Does your Z2 ask you for a PIN code when you turn it on or not?
Click to expand...
Click to collapse
no, by they way its 03 LTE version bought in store so it cant be simlocked, also in some locations it has signal but manly it don`t
heyy anyone pleasee?
Prerevision said:
no, by they way its 03 LTE version bought in store so it cant be simlocked, also in some locations it has signal but manly it don`t
Click to expand...
Click to collapse
"also in some locations it has signal but manly it don`t" --> unfortunately this feels like an hardware problem, defective or disconnected antenna or something like that.
If it was software related flashing the stock rom should have fixed it...
Have you tried another sim card on your phone? maybe a defective sim card could be the cause too and you can test that easily. if it's also not sim card related i would send it to sony if i still had warranty.
If i was out of warranty i would open the phone (buy new adhesives before you do this, i don't think you can reuse the original) and check the coax antenna cable. I never opened my z2 but it doesn't look that hard.
https://www.ifixit.com/Guide/Sony+Xperia+Z2+Logic+Board+Replacement/34646
on step 6 you can see the coaxial antenna highlighted in the blue circle, it looks like a pigtail connects it to the motherboard i would check that first.
ptmaniac said:
"also in some locations it has signal but manly it don`t" --> unfortunately this feels like an hardware problem, defective or disconnected antenna or something like that.
If it was software related flashing the stock rom should have fixed it...
Have you tried another sim card on your phone? maybe a defective sim card could be the cause too and you can test that easily. if it's also not sim card related i would send it to sony if i still had warranty.
If i was out of warranty i would open the phone (buy new adhesives before you do this, i don't think you can reuse the original) and check the coax antenna cable. I never opened my z2 but it doesn't look that hard.
https://www.ifixit.com/Guide/Sony+Xperia+Z2+Logic+Board+Replacement/34646
on step 6 you can see the coaxial antenna highlighted in the blue circle, it looks like a pigtail connects it to the motherboard i would check that first.
Click to expand...
Click to collapse
tried another sim, it`s same but hardware? it worked just fine but once.... ehm well it`s already open iv got water damage while put it in water but one who fixed it said there was no damage but only screen led lights also it just got wrong while i was HOLDING device in hands there was no drop or something
Prerevision said:
tried another sim, it`s same but hardware? it worked just fine but once.... ehm well it`s already open iv got water damage while put it in water but one who fixed it said there was no damage but only screen led lights also it just got wrong while i was HOLDING device in hands there was no drop or something
Click to expand...
Click to collapse
I'm not an hardware expert but if it's not the sim and you're seeing some water damage inside the phone that's probably the cause. you might have water residue or oxidation on the antenna connectors which will make your signal weak. you can buy a new antenna online cheap and replacing it looks very easy. after a quick search i found this: http://www.witrigs.com/antenna-rf-cable-for-sony-xperia-z2
I really like my z2 and i would try everything that was not too expensive/hard to fix it
ptmaniac said:
I'm not an hardware expert but if it's not the sim and you're seeing some water damage inside the phone that's probably the cause. you might have water residue or oxidation on the antenna connectors which will make your signal weak. you can buy a new antenna online cheap and replacing it looks very easy. after a quick search i found this: http://www.witrigs.com/antenna-rf-cable-for-sony-xperia-z2
I really like my z2 and i would try everything that was not too expensive/hard to fix it
Click to expand...
Click to collapse
man i`ll learn a lesson and never will buy Sony anymore or any "water resistant" phone
by the way after water damage fix it worked fine about 2 week then got signal issue
The wifi signal strength is normal and good before, and it becomes worse about one month before, the wifi signal strength becomes weak, I have tested with other phones. At the beginning, I think it is the problem of the MIUI, then I flash Cm14.1 to see, but the wifi signal strength still the same. Can anyone suggest any method?
how exactly did you measure wifi strength?
and what can possibly go wrong with weaken wifi signal?
care to explain?????
Simoom Sadik said:
how exactly did you measure wifi strength?
and what can possibly go wrong with weaken wifi signal?
care to explain?????
Click to expand...
Click to collapse
I have already fixed the wifi problem with opening the case of the phone and put a soft metal clip between the two wifi contacting points and the antenna.
I think it is the problem of the aging of the the two wifi contacting points .
imyesbest1 said:
I have already fixed the wifi problem with opening the case of the phone and put a soft metal clip between the two wifi contacting points and the antenna.
I think it is the problem of the aging of the the two wifi contacting points .
Click to expand...
Click to collapse
Can you elaborate more about fixing the wifi? I'm facing the same problem with weaken WiFi strength. Maybe you can provide pics for the fix? Thanks in advance
irul.monster said:
Can you elaborate more about fixing the wifi? I'm facing the same problem with weaken WiFi strength. Maybe you can provide pics for the fix? Thanks in advance
Click to expand...
Click to collapse
I did some search on the internet first, finding out that many ppl having the same problems due to the reasons of falling down the phone on ground.
It is easy, First open the case, then open the upper part which is with 4 screws. then remove it and you can see there is two contacting point on the upper right side.
They are are the contacting point for wifi.
Just use some soft clip to increase the contact area and install back the upper part. that's all
irul.monster said:
Can you elaborate more about fixing the wifi? I'm facing the same problem with weaken WiFi strength. Maybe you can provide pics for the fix? Thanks in advance
Click to expand...
Click to collapse
i hope you already solved the problem, but if not, try this out, it work for me at least now my redmi note 3 wifi keep connect and the signal increase, first open your phone back cover (you can use thick material such as guitar pick) then at the top remove 4 screws (one screw is hidden in the back of small mi sticker) then remove the black small cover, there at two contact point put something (for me i use aluminium foil, i take it from coaxial antena cable, cut small square or so put in there) that's it put it back, try to test it first before you put the cover back because a little bit hard to open the cover though. goodluck....
bar4 said:
i hope you already solved the problem, but if not, try this out, it work for me at least now my redmi note 3 wifi keep connect and the signal increase, first open your phone back cover (you can use thick material such as guitar pick) then at the top remove 4 screws (one screw is hidden in the back of small mi sticker) then remove the black small cover, there at two contact point put something (for me i use aluminium foil, i take it from coaxial antena cable, cut small square or so put in there) that's it put it back, try to test it first before you put the cover back because a little bit hard to open the cover though. goodluck....
Click to expand...
Click to collapse
This works in Xiaomi Redmi 3S? I am with the same problem, but i am not sure how to open it and where are the part that i must put something in that two contact point.
This is a very weird issue. I had very good wifi strength before and with the miui updates the signal is very weak now. Redmi 2 and any other phone has better signal.
I have the same router than before.
But its strange that other ROM also has weak signal... Because redmi note 3 pro used to be considered a phone with wifi signal strength
I have my phone suddenly got low wifi signal. I try your suggestion, and it works. Wifi signal is as good as new phone.
I do both put paper under the pin to leverage the connection point, AND put aluminum foil to the contact point in the small black cover to increase the contact area. Not sure which action do the magic
bar4 said:
i hope you already solved the problem, but if not, try this out, it work for me at least now my redmi note 3 wifi keep connect and the signal increase, first open your phone back cover (you can use thick material such as guitar pick) then at the top remove 4 screws (one screw is hidden in the back of small mi sticker) then remove the black small cover, there at two contact point put something (for me i use aluminium foil, i take it from coaxial antena cable, cut small square or so put in there) that's it put it back, try to test it first before you put the cover back because a little bit hard to open the cover though. goodluck....
Click to expand...
Click to collapse
Can you upload a video for this steps
giangnvh said:
I have my phone suddenly got low wifi signal. I try your suggestion, and it works. Wifi signal is as good as new phone.
I do both put paper under the pin to leverage the connection point, AND put aluminum foil to the contact point in the small black cover to increase the contact area. Not sure which action do the magic
Click to expand...
Click to collapse
Can you upload video explain the situation or put pictures how can i do that?
does it harm if i put aluminum foil in between contact point
Help
giangnvh said:
I have my phone suddenly got low wifi signal. I try your suggestion, and it works. Wifi signal is as good as new phone.
I do both put paper under the pin to leverage the connection point, AND put aluminum foil to the contact point in the small black cover to increase the contact area. Not sure which action do the magic
Click to expand...
Click to collapse
can you help me in steps?
imyesbest1 said:
The wifi signal strength is normal and good before, and it becomes worse about one month before, the wifi signal strength becomes weak, I have tested with other phones. At the beginning, I think it is the problem of the MIUI, then I flash Cm14.1 to see, but the wifi signal strength still the same. Can anyone suggest any method?
Click to expand...
Click to collapse
https://forum.xda-developers.com/re...l-en-redmi-t3750278/post75582409#post75582409
i need to try
The new touchscreen works well without a simcard, but when i put the simcard on the socket it simply become unresponsive! any help on this? Please give guidelines to resolve this issue
Model Moto e 2 gen
vickywiki said:
The new touchscreen works well without a simcard, but when i put the simcard on the socket it simply become unresponsive! any help on this? Please give guidelines to resolve this issue
Model Moto e 2 gen
Click to expand...
Click to collapse
Is there any chance of a short circuit, loose screw or loose connection, any source electrical interference?
unclesado said:
Is there any chance of a short circuit, loose screw or loose connection, any source electrical interference?
Click to expand...
Click to collapse
No loose connection there is one strap which is connect display to board it is perfect. If it is loose connection mean it should also not work at without sim but it works fine
vickywiki said:
No loose connection there is one strap which is connect display to board it is perfect. If it is loose connection mean it should also not work at without sim but it works fine
Click to expand...
Click to collapse
Assuming, everything is ok with the screen, Sim card is still partially conductor. If something misplaced, it can interfere easily.
unclesado said:
Assuming, everything is ok with the screen, Sim card is still partially conductor. If something misplaced, it can interfere easily.
Click to expand...
Click to collapse
How to solve this issue
vickywiki said:
How to solve this issue
Click to expand...
Click to collapse
I checked a screen replacement guide, screen and touch digitizer plug and play, so they supposed to work when it's replaced properly.
Things you can do without opening the device that I found on internet,
- There is a suggestion to remove if case or a screen protector and I don't think it's relevant.
- Any other suggestion on the internet is knocking the corners of the screen.
- Getting kernel log and android log is another option. There might be something crashing.
- If you didn't reset the device already, you could try to reset it to see if it works.
Then there is no easy fix. You need to disassemble the device, check if there is wrong connection, dust, anything shouldn't be there. If you can find you can try spare screen. If there is no problem you should check components for faulty responses, voltage levels, etc.
Hey Folks
So I replaced my screen in order to fix those ghost touches. I ordered a screen from aliexpress and its totally fine.
But since the replacement my cellular network connectiom goes crazy.
1. I wasnt able to register the phone in the providers network, so I double checked the antenna and now am able to connect. (antenna wasnt correctly in place)
2. I only get Internet Connection for some time, then I have to reboot the phone to get internet back. That sounds for me just like a Software Issue so I reflashed everything. But I still got that problem.
Has anyone got an Idea?
I now ordered an antenna Cable and a daugther Board, but Im not sure about that board. What about frequencies? Do I need to get an eu Board or smt for switzerland?
Greetings
Smouker
I think that wifi sigaunal is joined to the daughter board. The cellular signal is handled by the plastic cover on top of camera lens. See if it is intact or have you played around or damaged it
i have almost the same problem.
Sim gets recognized but no network service.
Plastic cover looks undamaged...
wamy007 said:
i have almost the same problem.
Sim gets recognized but no network service.
Plastic cover looks undamaged...
Click to expand...
Click to collapse
Seems like exactly the same for me.
Plastic cover isn't damaged
i fixed it.
Antenna cable was broken.
Replaced it and everything is just fine now.
wamy007 said:
i fixed it.
Antenna cable was broken.
Replaced it and everything is just fine now.
Click to expand...
Click to collapse
smouker said:
Hey Folks
So I replaced my screen in order to fix those ghost touches. I ordered a screen from aliexpress and its totally fine.
But since the replacement my cellular network connectiom goes crazy.
1. I wasnt able to register the phone in the providers network, so I double checked the antenna and now am able to connect. (antenna wasnt correctly in place)
2. I only get Internet Connection for some time, then I have to reboot the phone to get internet back. That sounds for me just like a Software Issue so I reflashed everything. But I still got that problem.
Has anyone got an Idea?
I now ordered an antenna Cable and a daugther Board, but Im not sure about that board. What about frequencies? Do I need to get an eu Board or smt for switzerland?
Greetings
Smouker
Click to expand...
Click to collapse
Did your ghost touch issue disappeared as well....
My screen is rubbish. Doesn't recognise touches on the edges...and tiping is a nightmare. I ordered new screen from ali as well.... But i wonder did it do the trick? Did it help?
I hope yous can respond.
Thanks
Hunteres said:
Did your ghost touch issue disappeared as well....
My screen is rubbish. Doesn't recognise touches on the edges...and tiping is a nightmare. I ordered new screen from ali as well.... But i wonder did it do the trick? Did it help?
I hope yous can respond.
Thanks
Click to expand...
Click to collapse
Yep the screen fixed the touch Issue completly.
only the led light is waaay to bright lol. I guess they missed something there haha
wamy007 said:
i fixed it.
Antenna cable was broken.
Replaced it and everything is just fine now.
Click to expand...
Click to collapse
What a antenna cable? Please photo...