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I stay in africa(uganda) I sold my nokia n900 to buy a used unlocked tmobile samsung S 4G vibrant which has become my worst nightmare...the phone drops network signal and sometimes when I pull it outta my pocket it will show (searching) but will connect after 30minutes else i have to reconnect it my self in network setup..all that was not a problem to me because I work in the capital were network is always up in 5bars both 3G&2G but loses it quickly in some building..
Problem:
When I leave the capital just 15 minutes away it starts to drop signal from 5-0 but will regain in some places...it does this in areas that other people on the same network as me won't get a problem so do my previous 3G phones including the previous n900 I owned.
Things get bad when I reach home in that I barely get a bar in 3G and only 5-4-3bars in 2G it keeps on playing and in that process it will go to (searching) until I reconnect manually which forced me to look for a solution on the internet.
Solution I got:
Connect magnet wire in the back external antenna input at the back of the phone, guess you all have seen that hole, in the video the guy got 3bars from 0-1 bar which convieced me that my network problem is now solved.
Starting the trick:
I cut my tv antenna wire in two pieces, removed three thin silver wires and tested one by one.
The first two failed but the third one brought the network down from 0bars of 3G upto 3bars 3G.
Going on with the test now very happy I try a more fitting object I inserted the niddle which I used to remove the rubber cover which covered the external antenna input.
My nightmare begins:
Immediately after I removed the niddle, the signal bars all went off to X but mine shows a circle and a line touching both sides.
When I reinserted the niddle I got the signal back but this time only 2bars for 2G which was 4-5 bars before and 0bars for 3G which could dare 1bar.
finally:
Now I just removed the niddle, network went off again now my phone was relying on the niddle maybe the internal antenna was now disabled or ruined by me.
I hard reseted the phone, cleared cache but all didn't work..i put back the niddle in the hole It all came back.
Yesterday I took it to a local repair shop and today when I picked it I had -79dbm 2G and -53dbm 3G but when I left the shop 15 minutes away I got an X then 5-2-3 bars of both 3G and 2G..thaugh i got the network back without niddle support. The network is badder than how it was when I first bought the phone.
What the repair guy did:
He rolled a copper wire around the external antenna input and soldered it to an object just near th ext antenna input.
Finally:
What could have been the problem in the first place?
How can I solve the problem?
Phone: tmobile samsung galaxy s t959v vibrant.
State: unlocked and being used on airtel uganda.
Android Version:2.2.1
my last say: I have tested 3 different 3G phones with my simcard and all have performed well in my house with full bars and I don't remember having network issues with my previous 3G nokia phones, my brother who has a galaxy pocket doesn't face network problems either..i have tried all network operators with no success but still the same problem and now come for your help because after the niddle night, alk has become was! I like the phone soo,much cause its my first android but am afraid I can't have it like this, friends call me and it has already disconnected from the network even when the bars are still there in full swing..........
Hello guys and girls,
after experiencing some GPS problems (loss of signal on the road and/or late fix) I did the fix found on youtube (Where you place a bit of paper/tape under the GPS antenna contacts). It worked just fine, my GPS fix is now happening faster and I did not lose the signal ever since. But I am now facing some (weird?) problem: My GSM connection (GRPS, EDGE) is really really bad. In my room I don't get any signal at all, outside I get like 1 out of 4 bars of signal strength, but I lose it after a few seconds. I normally have 4 out of 4 bars in my room. BUT: My 3G connection works fine, 3G, LTE, same connectivity as before.
My friends phone (same carrier) does get the full GRPS/EDGE connection in my room, so it's not the carrier having problems. I didn't do any updates or anything in the last weeks. It would be a huge coincidence, if a software bug happened while I fixed the GPS problem, so I assume it's a hardware related thing?
How might I fix that, what possible solutions are there?
Tried the following so far:
Restarting multiple times, with our without airplane mode
Re-inserting the sim-car
Switching between LTE only, GSM/LTE, GSM only
Flashing new/other modem
Replacing the speaker/antenna-module
-> nothing changed
out of sheer curiousity, and after reading your post, im stuck wondering.. why do you want or need your gprs and edge connection when your 3G/LTE is fine? data speeds are very slow, and drain lots of battery using anything internet or download related..
Yeah, sure, 3G/LTE is better and coverage is really good where I live, that's why it's not an emergency for me, but it's very important to get it back to work properly.
I know at least 2 situations where I really need GSM (GPRS,EDGE):
1) At work (huge metal building, no 3G/LTE, only GSM) -> I can't call, text or do anything with my phone (don't worry, I am allowed to do so and no, there is no WiFi)
2) On the road, especially the german autobahn has large areas where there is no 3G/LTE coverage, so I can't use my navigation-software properly and can't respond to calls or whatsoever
So all in all: GSM in really important for me. Please help me. :crying:
ahh.. I see.
and your GPRS/edge was fine before the GPS "fix"? maybe something got loosened?
Before I did the fix it worked perfectly fine. Directly after I did it, the gsm was gone so I figured that I somehow damaged the antenna. But since I replaced it and nothing changed I am not sure what to do now. Are there other antennas, are there other modules that influence gsm, that I might have damaged or loosened?
That's what can happen when you tinker with guts of your phone. You risk damaging or messing it up. Sorry, I don't mean to sound like a jerk.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Yes, dave2metz, I know. I was fully aware of that when I opened my phone for the first time to fix the GPS thing. But I am not here for moral advice.
Any ideas how I could fix my problem are highly appreciated!
Edit:
Just checked: The sim-card is not the cause of the problem either. I would really appreciate some good ideas guys..
No idea what I might try?
My best guess is that this is a hardware related problem. But how does one fix it? I replaced the antenna (the bottom thing), nothing changed. So that specific antenna was not the cause of the problem.
Are there other antennas?
Are there antenna-connections that I could check?
Any other hardware things that I might check?
Anything that might have lost the physcical contact inside the phone because of that GPS fix?
Could it, against all odds, be a software problem?
Please, I am really in need of a working phone. If I can't fix it I need to replace it sooner or later because GSM is essential.
If anyone can provide me with an idea or something that leads me to a fix, I will reward you (amazon gift-card or whatsoever).
Cheers,
.yasu
Did you figure it out?
.yasu said:
No idea what I might try?
My best guess is that this is a hardware related problem. But how does one fix it? I replaced the antenna (the bottom thing), nothing changed. So that specific antenna was not the cause of the problem.
Are there other antennas?
Are there antenna-connections that I could check?
Any other hardware things that I might check?
Anything that might have lost the physcical contact inside the phone because of that GPS fix?
Could it, against all odds, be a software problem?
Please, I am really in need of a working phone. If I can't fix it I need to replace it sooner or later because GSM is essential.
If anyone can provide me with an idea or something that leads me to a fix, I will reward you (amazon gift-card or whatsoever).
Cheers,
.yasu
Click to expand...
Click to collapse
Did you end up figuring anything out for this? I have something along the same lines. I dropped my phone and smashed the screen. I was able to get a guy to replace the screen portion of the unit, but immediately after I got it back it had no cell reception. Rebooted came, back thought everything was cool.
After a couple weeks I notice my phone has lost reception occasionally. It's now gotten worse, I used to be able to reboot it about 5 or 6 times and then it would randomly come back. I've even had it come back without performing a reboot on its own.
I ended up taking the whole thing apart, reseating everything after having a day and half span where I have been unable to get it back and boom reception came back. Thought it was his repair job at that point, but it has since dropped the signal again and I can't get it back. Yesterday even I was showing LTE signal changing from low to strong etc, but my network was still down as I couldn't perform a search, maps, or anything.
I have my phone apart again. I've checked all the connections over and over and wondering what else to look for or try to replace. True my impact could have damaged a component on the mainboard, but my phone works fine in all other areas. I could replace the antenna wires and the antenna/speaker module, but I'm not sure it just a reception problem.
My phone also boots into airplane mode when it has no signal, but turning it off does not restore the connection or anything. Rebooting it puts it back into airplane mode. *#*#4636#*# shows my radio is off. Thinking it's a short or something somewhere, but I doubt I'll be able to fix it in that case - at least without a mainboard?
That's my other question, what part need to be replaced for experiencing no network and its not the antenna or antenna wires? Is the mainboard? Sister board? Currently researching teardown as this phone is modular and I'm sure I could source the part off ebay or something.
Hi,
There's one antenna for 2G/3G/4G so I think if this problem was caused by hardware, it would affect overall connection to mobile network.
I think that this might me software-related problem but actually can't figure out which. Only thing I'm currently thinking of it that your phone has problems with connecting to certain GSM band. For example in Europe are 900 MHz and 1800 MHz standard for GSM.
Lower frequencies bring you better coverage. Your phone might have trouble with connecting to them and automatically selects 1800 MHz layer.
If you are able to get another phone with SIM of the same network provider, I recommend you to download any networking app and compare data about cells. Mainly CID number. It's unique identifier of each cell in an area.
If both phones are connected to same cell (CIDs are equal), you have to compare RSSI values. Lower means better signal. RSSI is defined as a negative number in an interval of <-51; -113>. So -75 dBm is better than -89 dBm. In one place should be difference about +/- 5 dBm.
Reaching slightly different RSSI numbers while connected to same cell in same place might mean that your phone really have problems with radio.
hey mate,
My wife phon is having the same issue 4G works, 3G sort of works, 2G nothing.
[Did the GPS fix on my wife's Nexus 5 (and mine) also]
swapped sim, used another telco same issue.
when into service menu did *#*#4635#*#* , click the 3 dots, select radio band - only see USA band.
While my phone had automatic, usa bad , usa band, japan band.
she is running stock rom with unlocked boot loader, I am on CM11 but doubt that should make any difference.
if I work out what is going on will report back.
nexus 5 3g 4g damaged
hello guys?.. my htc nexus 5 got wet and i notice the signal strength got lost. when i open it up i notice the lines on the antenna got damage. how do i repair it? or should i replace it with new one? Pls help !!
Is issue still remaining?
Hi. I am having the same problem. Could anyone find a fix for this?
My GPS was and is fine. I didn't do the gps fix, but I have replaced my battery and I think it happened after the replace...
Only 2G/EDGE after teardown
Hello,
yesterday i fixed the broken screen of my Nexus 5 (European version).
Today i noticed that only EDGE is working and that i dont recieve 3G.
My dataplan doesnt support LTE so i cant check the LTE connectivity.
I double checked the coax antenna cables and they fit well.
How can i determine which part was damaged? Or are there any suggestion what could be wrong?
kind regards
Today i noticed the HSPDA Symbol at the train station.
It seems to me that the overall signal is very weak.
I ordered a new antenna cable and hope that it will fix the problem.
Are there any suggestion what could disturb the overal signal strength?
Have my Z5 since before christmas, was working very well till 7 days ago, suddenly dropped from H+ to Edge, then no network, and its been like that most of the time ever since, do a network search, sometimes it finds all the network, sometimes it finds only LTE, most of the time it cannot connect to a network. when I walk outside I can get a connection, but sometimes it cannot make calls, text or data with full signal on H+, for the last 7 days, if I walk outside by 5 feet away from the house I get a signal, walk another 40feet further I have no signal, walk another 30feet further I have a signal, while I have a Z and a s6 both working fine on H+ on the same network, swapping sims made no difference to the z5, and my sim works in all other phones perfect.
anyone experienced this?
deconfrost said:
Have my Z5 since before christmas, was working very well till 7 days ago, suddenly dropped from H+ to Edge, then no network, and its been like that most of the time ever since, do a network search, sometimes it finds all the network, sometimes it finds only LTE, most of the time it cannot connect to a network. when I walk outside I can get a connection, but sometimes it cannot make calls, text or data with full signal on H+, for the last 7 days, if I walk outside by 5 feet away from the house I get a signal, walk another 40feet further I have no signal, walk another 30feet further I have a signal, while I have a Z and a s6 both working fine on H+ on the same network, swapping sims made no difference to the z5, and my sim works in all other phones perfect.
anyone experienced this?
Click to expand...
Click to collapse
to get better help please write more about ur phone condition
have install any app or flash mod that related to network?
+ other phone working fine in ur location?
:good:
Geeks Empire said:
to get better help please write more about ur phone condition
have install any app or flash mod that related to network?
+ other phone working fine in ur location?
:good:
Click to expand...
Click to collapse
only had a few games installed, and word, nothing other than that, phone bought new in December 2015, 1 week after MM, was using Androplus v22 and Romaur v2 phone sitting on charger, with good H+ signal suddenly dropped to edge for less than a minute, then no service. have the S6's and a XZ here sitting side by side, they all work perfect with H+ except the Z5, swapping sims makes no different, but the sim from Z5 working in all other handset, all sim are billpay on same network
deconfrost said:
only had a few games installed, and word, nothing other than that, phone bought new in December 2015, 1 week after MM, was using Androplus v22 and Romaur v2 phone sitting on charger, with good H+ signal suddenly dropped to edge for less than a minute, then no service. have the S6's and a XZ here sitting side by side, they all work perfect with H+ except the Z5, swapping sims makes no different, but the sim from Z5 working in all other handset, all sim are billpay on same network
Click to expand...
Click to collapse
First do factory reset if nothing gets better
Take it to service to check antenna
:good:
Geeks Empire said:
First do factory reset if nothing gets better
Take it to service to check antenna
:good:
Click to expand...
Click to collapse
done everything, nothing, phone is too new to be taken apart, they should replace it.
deconfrost said:
done everything, nothing, phone is too new to be taken apart, they should replace it.
Click to expand...
Click to collapse
How they are going to replace a phone with unlocked bootloader and with custom kernel?
Did you flash your phone with full firmware and full wipe?
gm007 said:
How they are going to replace a phone with unlocked bootloader and with custom kernel?
Did you flash your phone with full firmware and full wipe?
Click to expand...
Click to collapse
I did, tried 5 different ftf full wipe everytime.
yea bad move for unlocking, certainly wouldn't go with my current provider again, regardless of unlocked bootloader, they have no intention of replacement.
I just checked the antennas they are fine, only thing I see different is with or without the grey antenna wire connected or not, it made no difference to the signal, sub antenna looks perfect and main antenna look perfect too. there's nothing to is just metal contacts.
if the fault is not the board then it be down to software, the phone works in area with good signal, in town and city I get 4g+ and download speed is great, but upload speed still poor, would it be the ic on the board?
PS. the Z5 is much easier to open than anything else I worked on before
maybe a silly question, but should I unlock the simlock first before I unlock the bootloader? this is my second z5, first z5, a week after bootloader unlocked, no network, no sim work in it, no TA backup but it does work in area with strong coverage, even on 4G+ with full signal
bit worry to do anything with the new one now
Hi all,
My xperia xz having 1 bar reception almost every time, any has the same problem as me?
Sometimes 2 or 3 bars, and 4 bars is rarely happen.
I also tried my sibling's simcard(other telco), 1 bar in my room and 2/3 bars when i walk to main door. Any suggestions? Thanks
Mine seems to as well, in thinking it could be cosmetic issue?
Otherwise maybe the wrong baseband?
Not too sure. Was yours purchased through import or local supplier?
CountParadox said:
Mine seems to as well, in thinking it could be cosmetic issue?
Otherwise maybe the wrong baseband?
Not too sure. Was yours purchased through import or local supplier?
Click to expand...
Click to collapse
Yup, bought from local Sony centre.
My previous Xperia z had stronger reception tho.
chunweng428 said:
Yup, bought from local Sony centre.
My previous Xperia z had stronger reception tho.
Click to expand...
Click to collapse
Not sure then \o/
I have my Z2 and XZ side by side.
One bar less on the XZ.
It's not cosmetic : at places where I have from 1 to 2 bars on the Z2 (at work), the XZ is between no connexion and poor connexion.
At home, 3 bars on the Z2, 2 bars on the XZ.
(both without cases during my tests).
Mine appears low most of the time, but the signal is fine. Check with an app like LTE Discovery and see if the signal is really as low as it looks. I know that when I flashed a UK (and now AU) firmware to enable the fingerprint reader, the signal indicator lost a bar and always looks lower than the US one for some reason.
Mine also looks low but reception is always good and I have met been out of reach of had calls dropping. So I am not worried
But I do think my WiFi reception is slightly less than my previous HTC one m7
chunweng428 said:
Hi all,
My xperia xz having 1 bar reception almost every time, any has the same problem as me?
Sometimes 2 or 3 bars, and 4 bars is rarely happen.
I also tried my sibling's simcard(other telco), 1 bar in my room and 2/3 bars when i walk to main door. Any suggestions? Thanks
Click to expand...
Click to collapse
My xa is the same, always one bar with 4g calls but reception is just fine never had any dropped calls either..
Sent from my Xperia XA using XDA Labs
Signal low and unstable
GoBx said:
I have my Z2 and XZ side by side.
One bar less on the XZ.
It's not cosmetic : at places where I have from 1 to 2 bars on the Z2 (at work), the XZ is between no connexion and poor connexion.
At home, 3 bars on the Z2, 2 bars on the XZ.
(both without cases during my tests).
Click to expand...
Click to collapse
Sitting in the same spot, my Z2 works fine while my XZ could not connect to Internet and calls are not possible. This is with the same SIM card tried. Where there is low signal, my XZ shows "No Service", not a single bar. Could not locate network as well. I already sent it to Sony center. Hopefully, they would not just run software repair and return it to me because I have done that and it didn't help.
Just found out the problem, the problem is not the phone... it's the telco im using. If I switch to LTE, some place that doesn't have strong LTE signal, the phone will get low reception. If I allowed max connection to 3G, I get full bars. So no worries and thanks.
it actually is a bug in Sony firmware. They way they calculate the display against the signal strength is wrong. why on Earth Sony shows 1 bar with 86db and 53 asu while for example Huawei p9 for exactly the same signal values shows 4 out of 5 bars.
XZ signal display is simply unrealistic.
In my case, xz dual, Polish operator play, net signal is best I had in Android phone.
i have full bars on 3g but on 4g(LTE) i get from1 to 3 bars at most....so it looks like that this behavior is normal for Sony LOL
IMHO don't compare bars to bars. Signal bars are always a completely arbitrary representation. Instead, use the SIM status in settings or whatever other signal measuring app to see the dBm or asu. I have compared my XZ signal to Huawei Mate 9, Galaxy S5, Motorola X Style, and Motorola Nexus 6, and have had equal or greater signal (with concrete dBm numbers) compared to every one.
yaninowe said:
it actually is a bug in Sony firmware. They way they calculate the display against the signal strength is wrong. why on Earth Sony shows 1 bar with 86db and 53 asu while for example Huawei p9 for exactly the same signal values shows 4 out of 5 bars.
XZ signal display is simply unrealistic.
Click to expand...
Click to collapse
Your explanation makes a lot of sense, I wondered about singal being low sometime but knew the phone was still having good singal thru lte discovery app on the playstore