poor signal reception and low sound quality - Xperia Z1 Compact Q&A, Help & Troubleshooting

Hi,
I bought a cheap brand new Z1 compact for my girlfriend from ebay. Arrived in original packaging with no signs of intrusion even embedded in a plastic foil. I used Xperia Companion and updated it to 5.1.1.
Ever since I gave the phone to her the voice quality was low (blurred, dull, with pauses of silence) and the signal reception was poor. Outdoors she has almost full or full bars but that goes to 0-1 indoors and the phone often becomes unreachable while my X compact works fine in the same conditions. My Xc usually has signal strengh a 10 dBm better than the Z1c of hers.
Factory reset and reflash from xperia companion didn't help anything.
The phone isn't rooted (yet).
Any suggestions? I ran out of ideas so any help is appreciated. Thanks.

Related

Phone signal drop-out

Overall, my area has a pretty good signal, but I live in a slight black spot, and my modern house with its foil lined walls does nothing to improve the situation. None of my phones have ever got a decent signal in the hous.
But I have observed a troublesome trend with the new Desire. If I leave the phone lying around on a shelf, the phone shows 2-3 bars of signal. If I make a call, the phone usually holds the call OK.
But if I pik the phone up to mess about with and dont immediately make a call, while I am holding the phone the signal will drop to zero, no service; and it doesn't come back, not until I put the phone back on the shelf.
Could it be that HTC are being too agressive with power management? Or could this be the same fault as has been reported in the Google Nexus?
It is entirely repeatable, to the point that I can demonstrate it to people.
What do other people in weak areas find?
Hi,
Is it exactly the same like the below demonstration of Nexus One signal drop?
http://www.youtube.com/watch?v=qEIA_lMwqJA
So far as that goes, yes, exactly the same.
What he doesn't do is test for less drop if a call is active. The phone appears to try harder to maintain the signal if a call is in progress.
AMAZING. Isn't it. So much talk about so many subjects, but no-one interested in how it actually performs as a PHONE!
This might be related to location of the GSM anthena on Desire and Nexus. Try to move your hand bit more up so you don't touch the bottom back part and check if there is any difference.
I would rather guess the described behaviour of a phone is perfectly normal with all phones under bad conditions. Happened to me with all my phones so far.

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.

Extremely bad wifi range after installing cm11

So I have a problem with the range of my wifi, my ipad mini will say it has full signal but with my htc one x, even when it is 2~3 meters away from the router it still wont say it has great a signal. This wasn't the case when it had its stock rom. Any ideas?

lg g3 low signal strength

hello guys
i bought my lg g3 (d855 32gb ) 10 days ago. phone worked fine for first week after that its signals started to drop . I used to get 2-4 signal bars of 4G on the ground floor but now on the ground floor either my phone loses signal completely or get 1-4 bars of 2G and signal is fluctuating alot .I compared my device signal with my brothers 3 year old xperia arcs and my g3 signal strength was always 10 - 20 dbm less than my brothers arc s . When ever i go from first floor to ground floor my g3 loses signal and it takes time to get signal back but it fluctuates alot. I dont know wheather its a software issue or hardware issue. A little help will be really appreciated. thanks in advance.

Brutal signal attenuation on D855

Hi there!
Several weeks ago and after a fall to the floor, my loved D855 is unable to make standard phone calls. So, it has LTE signal but when you are about to call (or receive a call) it tries to switch to GSM/UMTS network (as my phone company does'nt offer VoLTE) and is in this moment when signal is dropped (and call is not even started).
After a bit of investigation, resetting it, rooting it, flashing LineageOS (BTW i Love it)... behavior continues and I've realized that phone has a general signal attenuation (regarding only to mobile networks), because wifi signal is OK. I can only make standard calls when I am 100 meter LOS a base station...
I spent about 30$ in antenna replacements (PCB Antenna, Upper antenna, Lower antenna ) and also I bought the coaxial cable that goes from upper PCB to lower): Without success
So, I can use it only as a "tablet" without phone functions, and only 4G when there is "good" coverage. When there is bad coverage (a normal phone would show a 50% signal) my D855 loses total coverage.
May be a hardware problem?
It's a pity to buy a new one when a newer phone will have similar specs (new LG G6 will have 4/32Gb while mine has 3/32Gb) and still runs very smoothly (even more with Lineage OS)...
Thanks!

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