[Q] Signal strength is poor or none - Samsung Galaxy Nexus

Hi guys. I've got a problem with signal on my phone after I've opened it to change charger port(wasnt working so I bought one on ebay).
As I remember I didnt touch much but it seems that I did, because I've tried to flash new radios and then entire factory image.
Do you have any Ideas what I did wrong and how to check what kind of problem is that? I mean the signal is always there but at -113 dmb for hspa and -85 for gsm. I can access network only when near base station.

IDK but you can try flash a new baseband, as basebands control the signal strength in a phone

the cable for the radio is unplugged or damaged.

Zepius said:
the cable for the radio is unplugged or damaged.
Click to expand...
Click to collapse
you mean that long black cable on the right side(on a picture). It could be damaged, yeah, because sometimes few bars appear and then again nothing. But I don't understand why it shows signal strength -75dmb (and as I read on wiki it is normal value), but bars are not appearing

Related

Desire POOR RECEPTION

I have had my new Desire for 2 days now. It is the telstra version (australia) (which also has the non working GPS).
I am using my postpaid telstra sim in it which was previously in my blackberry 9700 which is NEXTG capable.
I have found the reception to be noticeably poorer. My BB would show full 5 bars and would never drop a call or have any issues with calls breaking up and being unable to hear the other person. The actual 'bars' was about 2 out of 4 for the android. it is 5/5 for the BB. The android signal strength meter shows anywhere from -90 dBm to -105 dBm in the same spot. My BB9700 shows -70 dBm !!! in the same spot with the same sim!!! -70 is as good as it gets.
for example today, i had trouble maintaining a conversation for more than a few minutes without it breaking up and having to repeat myself a few times. This happened at least on 2 separate phone calls with the desire. Granted, it never cut the connection completely.
i got sick of it because i was on call and had to be able to be contactable 100% so I swapped the sim in to the BB and continued on my conversation – 30 minute conversation without a hint of an issue.
I have always found the BB to be the ultimate in the phone department – but i was seduced by the pretty screen and graphics of the Desire and also the integration with google apps – which i use a lot of.
I also note that people have been complainng about the nexus one over in the US of A regarding the reception quality too. I bet it is the same thing.
The call quality is quite good though. The speakerphone is crap though.
The other bits of the phone are great – screen, speed, apps, and everything else everyone said was good... though i havent heard anyone complaining about the reception
Just want to know if anyone else is having similar experiences and if it is just me. Can ppl with phones that can show signal strength objectively (i.e. dBm measurements) look into a comparison? and also state what network you are on?
Im now thinking it is too unreliable to use as my primary phone... which is too bad. I hope it is a matter of a software update or somesuch to fix this. The price one pays to be an early adopter.
I suspect this applies to your Desire?
bloody hell... same thing happened when i tried what that dude did... pick up the damn thing and the signal goes to hell
devastating.... this is sad.
It's because the antenna is at the bottom, and you're most likely covering it with your hand when you pick it up.
It's quite worrying this sort of hardware design flaw wasn't spotted by HTC. I too can confirm it happens on mind has well....at least I know how to hold it now!
This thing really is a nexus one+sense huh? It even copies the 3g coverage issue.
I just tried that and found the same problem...that is really a big problem.
hi, even if that shown in the video partially occurs to me as well I can't say I'm noticing any difference with my old handset (touch hd)
I have currently got an O2 simcard in my desire with GPRS reception only.
I do not have that issue, will try with my orange 3g sim as well.
Has anyone a work around or advice for this?
Held tight in the palm I lose bars, held to the head I don't - enough of a different grip when actually using for a call. Cupped in the fingers rather than the palm, no loss.
I have the sim free desire bought from UK, and I'm using the optus prepaid sim. There is no problem for me at all.
Maybe update the radio would fix the issue, but it seems no radio update atm.
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk
HTC Desire Bad reception Solved!!
Hi All,
I recently bought a second hand HTC Desire and had the same thing: Bad Reception.
I tried EVERYTHING, Rom's, Radio's, Task-killers, etc. but I found the reason was something completely different!
Now my Desire has FULL 4 bars reception: What did I do?
Remove the battery cover, take out the battery, unscrew the two small Torx screws at the bottom left and right.
These two screws hold the antenna cover which is actually the antenna itself!!
You will find two spring-loaded contacts at the left of the phone on the circuitboard: these are the antenna contacts. Pry them up al little bit and clean them with some alcohol.
Now clean the two grey contact surfaces in the antenne. Do not use any scratching tool, but use a small pencil eraser!! The surface will stay a bit grey, but this is normal.
Now you are done!
Put the antenna back in place (bottom first) and put the 2 screws back.
Boot your phone and you will have good (4 bar) reception like before.
If you want to check?
Before you do anything "dial" *#*#4636#*#* , choose "Phone Information" and look at the signal strength.
The lower the number of dBm the better the signal.
Same as: the higher the ASU the better the signal.
Do the same after cleaning and you will see the result.
Succes to you all!
Extra: The antenna is at the bottom of the phone, poor design choice, we all know.
However:before -when holding the phone- the Signal Strength went from -103 dBm tot -119 dBm and then to 0, meaning losing the connection completely.
Now, the reception at the same location when holding the phone goes from -79 dBm to -85 dBm still holding 4 bars and having good reception.
My guess is that with all the Desire's these contacts corrode over time, so cleaning does help to get the phone back in it's original condition..
Satbeginner said:
Hi All,
I recently bought a second hand HTC Desire and had the same thing: Bad Reception.
I tried EVERYTHING, Rom's, Radio's, Task-killers, etc. but I found the reason was something completely different!
Now my Desire has FULL 4 bars reception: What did I do?
Remove the battery cover, take out the battery, unscrew the two small Torx screws at the bottom left and right.
These two screws hold the antenna cover which is actually the antenna itself!!
You will find two spring-loaded contacts at the left of the phone on the circuitboard: these are the antenna contacts. Pry them up al little bit and clean them with some alcohol.
Now clean the two grey contact surfaces in the antenne. Do not use any scratching tool, but use a small pencil eraser!! The surface will stay a bit grey, but this is normal.
Now you are done!
Put the antenna back in place (bottom first) and put the 2 screws back.
Boot your phone and you will have good (4 bar) reception like before.
If you want to check?
Before you do anything "dial" *#*#4636#*#* , choose "Phone Information" and look at the signal strength.
The lower the number of dBm the better the signal.
Same as: the higher the ASU the better the signal.
Do the same after cleaning and you will see the result.
Succes to you all!
Extra: The antenna is at the bottom of the phone, poor design choice, we all know.
However:before -when holding the phone- the Signal Strength went from -103 dBm tot -119 dBm and then to 0, meaning losing the connection completely.
Now, the reception at the same location when holding the phone goes from -79 dBm to -85 dBm still holding 4 bars and having good reception.
My guess is that with all the Desire's these contacts corrode over time, so cleaning does help to get the phone back in it's original condition..
Click to expand...
Click to collapse
I did the same thing when I was struggling with poor GPS - opened the phone and bent all contacts a little bit. Confirm that my (or my wife's more accurately) Desire now has outstanding GPS, 2G and 3G signal. This screenshot shows the two contacts mentioned by Satbeginner.
It is worth mentioning though - if your phone is still under warranty and has never been opened this procedure will void your warranty - you have to break a seal on one of the two screws to remove the antenna.

[Q] bad reception

Hi all,
i replaced the screen of my HOX when it got cracked.
i replaced it myself with a new screen from ebay.
the screen works well but after the replacment i have a really bad cell reception.
mostly i only have a gsm signal, a 3G signal is rare.
inside a house or building i have no signal at all.
i opened my HOX again to check the coax cable but this was not the problem.
can anyone tell me what hardware parts take care of the signal from my provider?
thanks.
nobody?
is it possibly that the two connectors circled in red are responsible for the provider 3g signal?
see attachment

[Q] "no service" after fell down

Hi,
I am not sure but after my phone fell from 50cm table! my phone always shows "no service".
I changed my SIM card and flight on/off mode. It didn't work.
The other phones sees the signals but mine doesn't.
Yesterday I recognized that if I am very very near to the link of the service provider (say 100m) I have signal! and can connect.
I think my antenna has vey poor performance. Do you have any idea to fix it?
Thanks in advance.
minerva71 said:
Hi,
I am not sure but after my phone fell from 50cm table! my phone always shows "no service".
I changed my SIM card and flight on/off mode. It didn't work.
The other phones sees the signals but mine doesn't.
Yesterday I recognized that if I am very very near to the link of the service provider (say 100m) I have signal! and can connect.
I think my antenna has vey poor performance. Do you have any idea to fix it?
Thanks in advance.
Click to expand...
Click to collapse
Same problem! It randomly lost service signal, and now I am missing signal everywhere except in a big city, but even there I mostly don't have signal. I have tested this with 3 other friends who have the same service provider and have 3 out of 4 bars - while I have 0.
I lose signal when the phone is in my pocket, when holding it below a table/desk (in school), when holding it wrong in my hands. It's a really annoying problem and I'll send my phone back today.
Try squeezing the phone a bit, maybe it slided around inside the case a bit and lost the connection to the antenna
Sounds strange but fixed my Wi-Fi temporally (at the end I bend up the antennas a bit...)
Sent from my iPad 2 using Tapatalk
Flo95 said:
Try squeezing the phone a bit, maybe it slided around inside the case a bit and lost the connection to the antenna
Sounds strange but fixed my Wi-Fi temporally (at the end I bend up the antennas a bit...)
Sent from my iPad 2 using Tapatalk
Click to expand...
Click to collapse
That only works with Wifi, but the wifi issue is already fixed on my phone.

One X Low/Zero network signal!

Hi, i recently got this one x (13 months old, out of warranty)
and found that the signal reception of this phone is quite weak!
I tried with SIM Cards of different mobile carriers but same issue with all of them..
it doesn't captures any signal at most of the places however in the areas with high signal strength, 3-4 signal bars appear and phone works fine!
Is there any fix to it? (Hardware issue or software?)
Also, the G-Sensor appears to be faulty, sometimes rotation works and sometimes it doesn't!
and the proximity sensor doesn't work at all!
arun6106 said:
Hi, i recently got this one x (13 months old, out of warranty)
and found that the signal reception of this phone is quite weak!
I tried with SIM Cards of different mobile carriers but same issue with all of them..
it doesn't captures any signal at most of the places however in the areas with high signal strength, 3-4 signal bars appear and phone works fine!
Is there any fix to it? (Hardware issue or software?)
Also, the G-Sensor appears to be faulty, sometimes rotation works and sometimes it doesn't!
and the proximity sensor doesn't work at all!
Click to expand...
Click to collapse
What ROM are you using? If stock ROM, try doing a factory reset. If not, try reflashing the ROM or try another ROM.
Hardware fault it is, connectors are in very bad shape, nothing can be done
how do I do that
leonardojt said:
how do I do that
Click to expand...
Click to collapse
do what?
Hi,
I desperately need your help/advice.
I'm suffering from the same problem as you are, running my HTC One X on Stock NON-Rooted.
I've tried to factory reset several times, but still, I'm barely getting 1-2 bars of Signal Reception at Max, while in most places I get NO SIGNAL!
What did you do to fix your phone? Which jumper were you talking about?
I'll appreciate your advice...
Zach.
arun6106 said:
Hardware fault it was.
I was on stock rom, restored stock backup multiple times, did factory reset, none worked,
ultimately just one jumper, did it all! :laugh:
Click to expand...
Click to collapse
zachig said:
Hi,
What did you do to fix your phone? Which jumper were you talking about?
Zach.
Click to expand...
Click to collapse
There are some pins on the motherboard that makes contact with the antenna inside the back cover. With time, those pins bent downward to motherboard and makes poor contact with the antenna. You need to remove the back cover and repair those pin or bent them back up.
look at this thread, its for the wifi issue, but essentially the same solution. http://forum.xda-developers.com/showthread.php?t=1688538
alray said:
There are some pins on the motherboard that makes contact with the antenna inside the back cover. With time, those pins bent downward to motherboard and makes poor contact with the antenna. You need to remove the back cover and repair those pin or bent them back up.
look at this thread, its for the wifi issue, but essentially the same solution. http://forum.xda-developers.com/showthread.php?t=1688538
Click to expand...
Click to collapse
Thanks, I've already tried the pins solution. I even replaced the whole back cover.
I guess my only chance is to replace the inside coax antenna cable, unless the problem lies inside the motherboard somewhere...
Thanks anyway...

[Q] Poor data/signal after repairing charing port.

Okay, so last night I successfully replaced the charging port on my Note 2. It wasn't malfunctioning, it was just extremely loose and was hard to keep a charging cable in.
Before putting the device back together I made sure the antenna cable and all other cables were plugged in and snug.
Since the repair , my device seems to be getting horrid data. Normally I would get LTE speeds of 20mbps+ up and about 10 down, now I'm getting 5mbps down and about .05mbps up....
The signal in the status bar goes from LTE to 3g and DC (cyanogen mod, not sure what that means).
The first night I didn't notice any problems as I was at home and connected to my home WiFi network. But when I woke up the signal was awful. I can make calls and text sometimes, in some area the signal bar has an X over and has no signal at all.
Has anyone experienced this or have an idea of what might be wrong?
Any help at all would be greatly appreciated!!!
P.s. the replacement part was specifically for my device, t889.
Okay, so this morning I downloaded and flashed the most recent modem for my phone and the signal strength seems stable, LTE download speeds are around 25 to 30mbps and my signal isnt constantly switching around. However the upload speeds are still around .01 - .05 mbps which is nothing compared to my old speeds of around 5mpbs - 7mbps.
I honestly have no idea how the hardware interacts in the phone, but would the charging port that I replaced possibly be faulty? I know the antenna cable plugs into it, and it has me thinking there is some part on it that is malfunctioning. But all this is just a guess.
I'd really appreciate any feedback.
Thank you.

Categories

Resources