Nexus 5 overheating problem and No Signal - Nexus 5 Q&A, Help & Troubleshooting

Hi Guys,
I have a problem with my Nexus 5 in that it overheats to around 70 degrees (got to 101 at one point!) Just by being on, even without using it. It even heats up when you check the battery when powered off (by pressing the power button once) only by a little bit.
I also have another problem, the phone can detect the SIM card and displays the number on the SIM, but it says no signal.
A third problem is that when the phone is locked and the screen is off, it randomly restarts. This doesn't happen when the phone is in use.
I would really appreciate if you guys could help me,
Thanks

1. What rom are you using? do you use a custom kernel?
2. try reflashing factory images.
3. remove simcard and enable aieplane mode. check if it reboots or lverhears
the round antena wires come loose afaik. i ordered a new set lf antenas and replaced them. phone is much cooler and i get better reception and battery life

I'm running the stock android 6.0.1 which I flashed.
It detects the SIM but doesn't get a signal,
I checked and the wires are not loose, maybe I will order the antenna wires as a last resort.
If anyone has any other suggestions, feel free to tell me

Rockman501 said:
I'm running the stock android 6.0.1 which I flashed.
It detects the SIM but doesn't get a signal,
I checked and the wires are not loose, maybe I will order the antenna wires as a last resort.
If anyone has any other suggestions, feel free to tell me
Click to expand...
Click to collapse
Is your GPS working? My Nexus5 have same issue as yours plus GPS is Dead too. After some search I found that the GSM chip is the same of GPS so I think the problem is the chip itself.

Magist'r said:
Is your GPS working? My Nexus5 have same issue as yours plus GPS is Dead too. After some search I found that the GSM chip is the same of GPS so I think the problem is the chip itself.
Click to expand...
Click to collapse
I haven't checked. Im a bit busy this weekend so after the weekend I will try to check and I'll report my findings back.
Thanks ?

Related

[Q] Hardware Radio Issues with Nexus 5

I got a Nexus 5 off a friend for a decent price because he dropped it and bent it up a bit. After giving it a quick look, the only thing that seemed damaged was the black little coax wire that connects the main board to the board on the bottom (Assuming it goes to the antenna), The end simply got bent off. This was an easy fix, replace the cable no worries. The real problem is when I went to go test the phone after I fixed the cable, it doesn't get any cellular signal (Wifi/BT still works), draws a crazy amount of power and the 'Qualcomm WTR1605L' chip specifically gets extremely hot, to the point of overheating in like 30 mins. Rather than tossing a bunch of money into replacement components (or getting another nexus 5 with a bad screen or something) I'd prefer to narrow down the problem to one specific component. This leads to my question:
Does anybody have any ideas to how I can further troubleshoot and diagnose this problem, or knows what the problem exactly is?
I have tried a few things, like if I flash the LG G2 radio (A trick I learned I could do with my Nexus 4/LGOG, after backing up my EFS just in case), Wifi and Bluetooth still work while Cellular, GPS and most of the other sensors do not. This stops the big power draw and overheating issue, but doesn't really do anything to further identify the problem component. I noticed that the modem image could be mounted as vfat and you can mess around with the various parts of the image. I don't know which files do what, so I have thus far left it alone.
I know this seems like an odd question to ask here, half the time I see responses like "Send it into Google/LG and have them fix it for you" but that isn't really applicable in my situation
Also, I know that my SIM is good, it works in my Nexus 4, I know that my ROM isn't a issue, because I have multirom installed and tried many different roms. The Radio image shouldn't be an issue because I had updated the phone from 4.4 to 4.4.4/L Preview since I got it (Using the google images and flashall script). IMEI/Whatever the ESN equivalent shouldn't be bad, my friend had been using it before he dropped it.
Thanks in advanced for any ideas, and sorry for the long and comprehensive almost to a fault thread.
dtalley11 said:
After giving it a quick look, the only thing that seemed damaged was the black little coax wire that connects the main board to the board on the bottom (Assuming it goes to the antenna), The end simply got bent off.
Click to expand...
Click to collapse
Dropping a phone can sometimes cause invisible damage (like BGA solder joints failing). Visual inspection can only tell you so much.
dtalley11 said:
This was an easy fix, replace the cable no worries. The real problem is when I went to go test the phone after I fixed the cable, it doesn't get any cellular signal (Wifi/BT still works), draws a crazy amount of power and the 'Qualcomm WTR1605L' chip specifically gets extremely hot, to the point of overheating in like 30 mins.
Click to expand...
Click to collapse
I used to build small electronic projects when I was a kid. When something overheated like that, 90% of the time it was a short or a the wrong value of component. It's possible the drop caused the antenna connector to short out. Try disconnecting the antenna cable and try again with the stock radio firmware and see if the radio continues to overheat.
(I'm not sure how flashing the radio would prevent overheating, unless the original firmware simply turned up the transmit power in an effort to contact the tower, but that's my first guess and should an easy thing to eliminate).
ScottyPcGuy_03 said:
I used to build small electronic projects when I was a kid. When something overheated like that, 90% of the time it was a short or a the wrong value of component. It's possible the drop caused the antenna connector to short out. Try disconnecting the antenna cable and try again with the stock radio firmware and see if the radio continues to overheat.
Click to expand...
Click to collapse
Thanks for replying! When I get home I will give it a shot and see if it still overheats, then update this with my findings.
If it is overheating then it must hardware issue. Worst case is that the PBC board has a crack somewhere because of the bent. Grab the service manual from the general forum and start mesuring the components to find out where is the problem.
bitdomo said:
If it is overheating then it must hardware issue. Worst case is that the PBC board has a crack somewhere because of the bent. Grab the service manual from the general forum and start mesuring the components to find out where is the problem.
Click to expand...
Click to collapse
Ah, thanks. Something like that should be a sticky. For future reference/making sure we're on the same page, I found the thread here: http://forum.xda-developers.com/google-nexus-5/general/service-manual-d821-t2791303
dtalley11 said:
Ah, thanks. Something like that should be a sticky. For future reference/making sure we're on the same page, I found the thread here: http://forum.xda-developers.com/google-nexus-5/general/service-manual-d821-t2791303
Click to expand...
Click to collapse
Yes that is it.
ScottyPcGuy_03 said:
I used to build small electronic projects when I was a kid. When something overheated like that, 90% of the time it was a short or a the wrong value of component. It's possible the drop caused the antenna connector to short out. Try disconnecting the antenna cable and try again with the stock radio firmware and see if the radio continues to overheat.
(I'm not sure how flashing the radio would prevent overheating, unless the original firmware simply turned up the transmit power in an effort to contact the tower, but that's my first guess and should an easy thing to eliminate).
Click to expand...
Click to collapse
It seems to overheat with our without the antenna cables on the stock radio. I noticed that it still gets warmer than it should with the G2 radio, it just takes a lot longer.
That service manual is really comprehensive but unfortunately, it is going to take me some time to actually get to looking it over closely.

Wifi, Bluetooth and mobile hotspot are NOT WORKING ! G930F

I have a problem with my s7 G930F, wifi and moble hotspot are not working at all, when i turn on wifi or hotspot it just showing turning on ..
and when i turn on bluetooth it works for 5 seconds and then keeps switching off and on after every 5 seconds
i tried to wipe cache, factory reset, return to stock rom, install custom roms, install latest modem and bootloader but that did not fix the problem.
please help !!!
Does your gps works ?
NeoDJW said:
Does your gps works ?
Click to expand...
Click to collapse
Yes it's.
NeoDJW said:
Does your gps works ?
Click to expand...
Click to collapse
Yes it works.
Check water sticker on botton of sim slot
I had the same issue with a board i fitted to G930F bluetooth wasnt working nor wifi for no apparent reason i went through absolute everything firmware wise and system wise and couldnt figure out what the problem was i then removed everything once again looking for a loose connection it turns out the board i fitted in the top right hand corner there is a silver chip that controls wifi and bluetooth under the antenna there was a small black spot i noticed once carefully cleaned up i found the culprit there are 2 tiny fuses that blew conecting to the wifi chip this chip must also control bluetooth and NFC as that no longer works also.
Martty
Do you find a solution
daliyoos said:
Martty
Do you find a solution
Click to expand...
Click to collapse
I did find the solution unfortunately it requires the wifi ic chip to be replaced along with the fuses accompanied to the chip on the logic board but that means micro soldering the new chip on the other solution is change the board out when you take the antenna at the top off at the top right is the silver chip look at the circuitry and you should find a black burnt out spot also check the aerial for plastic burn where the chip sits
Thats the only solution available that ive found, not even the factory binary found the issue with the hardware though
That one chip though controls the wifi/bluetooth/android hostspot/NFC funnily enough though even though its blown visually the wifi toggles on still and will every now and then pick a network up for a second, the bluetooth toggles on but will not find any other device and other devices cannot find it either, the android hotspot turns on and broadcasts a signal but when trying to connect to it it will not connect, the NFC toggle is also set to on with the writing and toggle greyed out and NFC apps asking to turn on the chip but it cannot be toggled these are symptoms of the error,
If you would like to inspect your device,
If you dont know what your doing order a new backing i can successfully remove them without cracking them with a hair dryer, screen puller the cheap ****ty ring ones, and a guitar pick,
To start heat the backing of the phone up with hair dryer until its warm/hot next step is my secret trick to pop the watertight seal take the sim tray out and no **** blow into it youll hear the seal break get the ring puller pull it up enough to get the guitar pick in and just slide it all the way round,
Once the backs off theres 3 screws at top on antenna your gonna wanna use a phillips #00 for them once the screws are out get a pair of tweezers and slide them into the slot on the left side of the antenna where the vibrator is and pull up it will probably go flying if you use to much force but it wont break, the circuit and wifi module are now exposed on the top right diagnose the board for burnt spots if there is there, take the NFC chip off below the antenna and then the speaker to expose the charging port check the bottom right hand corner for circuitry burning also.
Matty1993 said:
I did find the solution unfortunately it requires the wifi ic chip to be replaced .
Click to expand...
Click to collapse
Hi, I have same problem for long, I tried all software options: factory reset, network reset, hard reset, wipe, firmware upgrade, downgrade,,
I can use NFC without problem but WiFI and Bluetooth are greyed out or stucking on turn on without finding anything.
Could you confirm what is the right IC for it ? I found two different IC number one on Ebay another on Part4reparirs , not sure which one is legit as both claim to be G930 wifi-IC (can't add link as I am new user)
also I would be interested to know where to buy fuse for it
I really miss my phone for few month using spare xiaomi now
aminkian said:
Hi, I have same problem for long, I tried all software options: factory reset, network reset, hard reset, wipe, firmware upgrade, downgrade,,
I can use NFC without problem but WiFI and Bluetooth are greyed out or stucking on turn on without finding anything.
Could you confirm what is the right IC for it ? I found two different IC number one on Ebay another on Part4reparirs , not sure which one is legit as both claim to be G930 wifi-IC (can't add link as I am new user)
also I would be interested to know where to buy fuse for it
I really miss my phone for few month using spare xiaomi now
Click to expand...
Click to collapse
Hey mate im a phone technician,
Ive got a few boards qnd broken S7 laying around ill pull one down and take a picture and label it and what not & will post it here for you,
The ic chip isn't actually a fuse its an actual chip which controls the wifi and bluetooth functions of the phone NFC is locted on 2 different part of the board aswell as wireless charging coil etc, so if that stuffed best of getting a new board, but however there is a small thermistor (ThermalTransistor) just before the wifi bluetooth ic hopefully for you its blown that and stopped current before getting to the wifi ic, i will also label this in the diagram
Hopefully in your case its the thermistor youll know anyway if it is will be blown with black or white residue everywhere and your antenna may be partially burnt out in that case, you will also need to check the daughter board for black or white burn residues also in the bottom right hand corner ill take a picture and label again also,
If i cant get the pics up straight away for you its because xda app is being a pain in the ass still and wont let me upload being playing up for a week now
Matty1993 said:
Hey mate im a phone technician,
Click to expand...
Click to collapse
Thanks for reply,, based on your explanation still other thing like antenna fuse thermistor could be damaged and ordering them one by one + shipping is not good idea.. I may better find cheap broken LCD S7 and ask technician to swap the board for me.
still looking forward to the pics... my Insta Gram acc is [at]kian.moments :fingers-crossed:

Recent problems with wifi, bluetooth, over heating

right now I have been using G4 for a long time.
And many problems start to appear on my phone.
I have got Bluetooth lagging, so sometimes disconnected with my earbud.
I have got no internet on 5G wifi, but 2.4G wifi works fine.
I have overheating problem and battery draining problem.
I want to know what I can do to fix or reduce the problem. Please don't tell me to buy a new one. I know it can be a solution.
Another problem is it only get Android 6.0 and I have att version but I am on Tmobile network.
I also want to know if any 3rd party Rom provides have a 7.0 or 8.0 for that?
Any suggestion can help.
If no way to fix or improve, I will look for a new one.
kevinzhang0528 said:
right now I have been using G4 for a long time.
And many problems start to appear on my phone.
I have got Bluetooth lagging, so sometimes disconnected with my earbud.
I have got no internet on 5G wifi, but 2.4G wifi works fine.
I have overheating problem and battery draining problem.
I want to know what I can do to fix or reduce the problem. Please don't tell me to buy a new one. I know it can be a solution.
Another problem is it only get Android 6.0 and I have att version but I am on Tmobile network.
I also want to know if any 3rd party Rom provides have a 7.0 or 8.0 for that?
Any suggestion can help.
If no way to fix or improve, I will look for a new one.
Click to expand...
Click to collapse
If you google LG g4 boot loops it’s all a common issue. There are fixes like baking it in the oven, taking it apart and redoing to heat sink or whatever. But only actual fix is replace the phone. The G4 is common for hardware failure. Just make sure you backup everything as it wouldn’t be a surprise when it bootloops, usually there’s no bad signs before bootloop but can still happen especially since your having hardware problems.
You’ll need an AT&T sim to update the device. Sorry can’t answer on custom Roms though.
Sent from my iPhone using Tapatalk

Connectivity issues after screen replacement

Hello !
We changed a screen on a P30, we transferred the old fingerprint to avoid malfunctions BUT now we have connectivity issues. :
- The WiFi works 1 day by a week... Mostly times when we try to connect we have an error "Access denied".
- GPS doesn't work, on Maps my localization is wrong.
- Bluetooth power on and then go off few seconds after.
We resetted the phone many times, we tried to flash the last full firmware directly on boot and OTG (DLOAD).
I'm pretty sure it's just a software issue and maybe the modem image is bad... What could we do now ?
Thank you for your help <3
UP !
did u find the problem? i have the same problem after screen replacement
madman1989 said:
did u find the problem? i have the same problem after screen replacement
Click to expand...
Click to collapse
No... Maybe if we take off the new screen and transfer it to the old frame ? Did you try that ?
Themiller12 said:
No... Maybe if we take off the new screen and transfer it to the old frame ? Did you try that ?
Click to expand...
Click to collapse
no i didnt try? would you like to test it? thank you
madman1989 said:
no i didnt try? would you like to test it? thank you
Click to expand...
Click to collapse
We tried to transfer everything back to the old frame but using the new screen connected to the lcd connector and guess what ? Everything was working again ! But the LCD is really too hard to unmount from the new frame...
This sounds like you left the antenna cable loose or maybe it got damaged, did you check the antenna cable or replace with a new one?
Themiller12 said:
We tried to transfer everything back to the old frame but using the new screen connected to the lcd connector and guess what ? Everything was working again ! But the LCD is really too hard to unmount from the new frame...
Click to expand...
Click to collapse
mine its still not working,the old Display its broken , i have changed the antennas but nothing happened, wifi its working , but gps and bluetooth not , bluetooth works fine maximal 5-10 cm after that no more connection , and the gps its showing my location and when i start to drive it doesent show anymore.. i have this problems for 3 Months and it drives me crazy. The new Display its Original with Frame!
same issue
i have the same issue, replaced lcd with original full part... bluetooth and wifi doesnt work... the wifi see the connections but not connect...the bluetooth find near devices but not connect...
i have try to replaced antenna wifi and buzzer
any soluction?
Helli, having same problem. Changed screen and seems that Huawei p30 pro wont find GPS signal easy. Inside house a cheaper Phone finds better signal, p30 pro doesnt find at all. Outside it do, but loses it. Is It possible To strengthen connectivity inside the Phone?
Hello, I have the same problem with original huawei screen for the p30. Did you find a solution?
Happy New Year

Question Help || Mobile radio power turn off automatically

when i enter phone info through (*#*#4636#*#*) and turn mobile Radio Power on exit the program and enter it again i see that radio power is off..
as a result i have no signal and can't call anyone.
i first saw this problem after upgrading to android 12 latest update but now after downgrading to android 11 the problem remain.
what can i do?
Change the motherboard or swap unit with the asus repair center
vinotux said:
Change the motherboard or swap unit with the asus repair center
Click to expand...
Click to collapse
there's no way there's a software issue?
dokvader114 said:
there's no way there's a software issue?
Click to expand...
Click to collapse
Also getting the same issue on two different phones now, one of them seems to fix itself randomly but the other is just not working at all.
Can't find any fix for this online either
oOII TAHA IIOo said:
Also getting the same issue on two different phones now, one of them seems to fix itself randomly but the other is just not working at all.
Can't find any fix for this online either
Click to expand...
Click to collapse
If it's still in warranty, go to the repair center and get a replacement. It's a hardware flaw from ASUS's side
HI guys, i have the same issue on my Oneplus 8 PRO, do you find a solution ?
I tried to flash on Android10 and the mobile radio power turn on , but my sim card is not recognized :/
dokvader114 said:
when i enter phone info through (*#*#4636#*#*) and turn mobile Radio Power on exit the program and enter it again i see that radio power is off..
as a result i have no signal and can't call anyone.
i first saw this problem after upgrading to android 12 latest update but now after downgrading to android 11 the problem remain.
what can i do?
Click to expand...
Click to collapse
The radio function turns off or it's on but no signal strength? If the latter and you have bent this device by accident, even by a little bit in your pocket or similar, it may have damaged the antenna lines that are delicate and routed around the soft plastic side frame of this device. I've had that happen...
Shinuis said:
HI guys, i have the same issue on my Oneplus 8 PRO, do you find a solution ?
I tried to flash on Android10 and the mobile radio power turn on , but my sim card is not recognized :/
Click to expand...
Click to collapse
Check if it's an IMEI issue or you might have had an error while flashing, hence causing the driver/firmware to break and not detect your SIM.
Andrologic said:
The radio function turns off or it's on but no signal strength? If the latter and you have bent this device by accident, even by a little bit in your pocket or similar, it may have damaged the antenna lines that are delicate and routed around the soft plastic side frame of this device. I've had that happen...
Click to expand...
Click to collapse
how you fixed it ?

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