I keep loosing signal with any sim cards i use. Any fix?
Johnny TDN said:
I keep loosing signal with any sim cards i use. Any fix?
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not a common problem, though someone did mention something about problem on 2G or cdma on LOS14 recently, maybe try update modem or flash a different one.
(if you have I9195 here are modems that already been extracted from stock roms https://forum.xda-developers.com/ga...dem-samsung-galaxy-s4-mini-gt-i9195-t3390780)
If still weak signal then it could be poor grounding of pcb or antenna connection, remove battery, remove internal cover, check connections/reseat leads also tighten screws of motherboard/remove check for tarnished/corroded contacts. (if you put a small piece of wire on the test point (micro rf connector) with battery in you might suddenly see signal strength spike meaning it's your antenna/connection is the problem)
IronRoo said:
not a common problem, though someone did mention something about problem on 2G or cdma on LOS14 recently, maybe try update modem or flash a different one.
(if you have I9195 here are modems that already been extracted from stock roms https://forum.xda-developers.com/ga...dem-samsung-galaxy-s4-mini-gt-i9195-t3390780)
If still weak signal then it could be poor grounding of pcb or antenna connection, remove battery, remove internal cover, check connections/reseat leads also tighten screws of motherboard/remove check for tarnished/corroded contacts. (if you put a small piece of wire on the test point (micro rf connector) with battery in you might suddenly see signal strength spike meaning it's your antenna/connection is the problem)
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I will send it to the service and replace the antenna.
Johnny TDN said:
I will send it to the service and replace the antenna.
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it might not be that, did you test antenna with little cable on test point (just take battery cover off). I was just giving an idea of possible problem. Some people have found just tightening the screws that hold the motherboard fixes it. It could be something else entirely like eg software, is it the same on all modem/baseband & other rom?
IronRoo said:
it might not be that, did you test antenna with little cable on test point (just take battery cover off). I was just giving an idea of possible problem. Some people have found just tightening the screws that hold the motherboard fixes it. It could be something else entirely like eg software, is it the same on all modem/baseband & other rom?
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yes
i tried with all the roms, same results
Related
Hi guys
Need a bit of emergency help (or maybe a hug).
I had major wi-fi issues and believed it to be the usual antenna problem described everywhere. In my wisdom, I thought the procedure to sort out the connector under the back-cover looked easy.
It was! I opened her up, "re-sprung" the connector - all good. However! My screen will now not switch on. There are no obvious issues internally or externally - I think I know which connection on the motherboard is for the screen but still nothing.
The phone is definitely on as I am getting notifications. Can anyone suggest a possible issue I have overlooked? Maybe a hidden connector somewhere? Or is it off to the mobile phone shop for me.....?!
Thanks
James
surrealjam said:
Hi guys
Need a bit of emergency help (or maybe a hug).
I had major wi-fi issues and believed it to be the usual antenna problem described everywhere. In my wisdom, I thought the procedure to sort out the connector under the back-cover looked easy.
It was! I opened her up, "re-sprung" the connector - all good. However! My screen will now not switch on. There are no obvious issues internally or externally - I think I know which connection on the motherboard is for the screen but still nothing.
The phone is definitely on as I am getting notifications. Can anyone suggest a possible issue I have overlooked? Maybe a hidden connector somewhere? Or is it off to the mobile phone shop for me.....?!
Thanks
James
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Probably not what you want to hear, but was it actually really simple to fix the antenna?!
Wilks3y said:
Probably not what you want to hear, but was it actually really simple to fix the antenna?!
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Haha - yes. It's quite obvious when you open it up what the issue is. The connector is a small "spring" that makes contact with some copper plate on the backplate. This spring obviously gets depressed too far and won't spring back to make the desired contact. In theory, easy to fix. In theory...
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!
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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
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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:
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zachig said:
Hi,
What did you do to fix your phone? Which jumper were you talking about?
Zach.
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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
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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...
Drop my Note 2 this morning and since then, the (GSM/LTE) signal seems unstable. Most of the time there's just no signal at all, a big O in status bar. Sometimes I manage to get signal by pulling out battery and knocking around the phone (!!), then after a while it gets back to no signal. What could be the problem? Did the drop this morning damage the GSM antenna? If that the case, where is the GSM antenna in this phone? I might want to open it up and check tonight when I get home.
PS: Check with other guys in the same building with AT&T, they seems to be fine regarding signal, so probably it is just my phone's problem.
Re-seat your sim card. Squeeze the antenna module.
Maybe open it up and check the internal connector.
rangercaptain said:
Re-seat your sim card. Squeeze the antenna module.
Maybe open it up and check the internal connector.
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That's the plan. Just not sure where is the antenna module though
Top of the frame on the edge.
I did a search and most of the Wifi problems seem to describe knox security and bootloader issues.
Here, I wish to describe/discuss what seems to be a hardware problem in my n7100 note 2.
This occurs with stock and dr. ketan rom on 4.4.2 even with wifipatch applied (technically not needed).
OS 4.4.2
boot loader: n7100ZSUFNL1 (I believe this bootloader should be ok - correct me if I'm wrong).
model GT-n7100
ISSUE
- the wifi icon doesn't turn on or wifi drops out when the system is running hot. This happened the first time after I flashed a ROM/upgraded and I thought it was a ROM issue.
- however, more recently, I have managed to keep the wifi signal absolutely stable when i open up the back cover and run a fan blowing on the back/cpu area at the top back of the phone around the camera area.
- with fan cooling => completely stable
- without fan cooling => drops out when system under load or randomly.
for some reason, omega rom had a problem for me where it kept disconnecting irrespective of the heat
I have seen discussions of our phone overheating but this seems to be a hardware problem with the wifi module.
I presume that there may be micro fractures with the wifi chip solder (seems to be a theme in electronics) that may be causing wifi problems with overheating.
This happened with an iphone 4 voice audio processing chip once for me and the "online community" had figured out a fix by taping in a "pressure mount" for the chip.
//blog.lovefone.co.uk/iphone-4-faulty-microphone-audio-chip-problem
Any suggestions on taping in a heatsink or pressure against the wifi module?
Help would be appreciated. Just adding to the knowledgebase in the community.
When Samsung adopted RoHS some range of devices plagued with badly soldered BroadCom chips. I personally know one S3 and two Note 2 (one is mine own) with all the same problem: no WiFi from time to time and likely no BT too.
I paid ~100 euros to change the main board with BC chip guaranteed working about half a year ago.
Thanks for the quick reply and confirmation.
After ordering a new midframe; playing around with screws and disassembling it a few times; it does feel like a solder joint/connection issue.
I haven't heard much feedback from the net on this problem which is why i raised it.
Others on the net have mentioned loosening the screws securing the motherboard down. I will try that as well but I presume that with a loose solder joint; overtightened screws may warp the motherboard just enough for the connection to flake out.
THanks again.
PS - if anyone else has the same problem/suspicion; please chime in.
So, in follow up.
Adding aluminum tape to the wifi chip didn't seem to work. I took it off and reseated the midframe where the antenna is located.
Still was getting dropped wifi.
Disassembled; took a small screwdriver and gently lifted the wifi contacts from the motherboard up so that it makes better contact with the midframe.
Seemed to help.
It's definitely hardware. Whether it's a problem with the WIFI chip or with the antenna; i don't know but it's somewhere along that line.
Crazy hardware gremlins
Hey there,
I'm looking for the GPS antenna, but i can't find it. Can anyone send me a Picture from the antenna?
Here
Hey, i've already seen this, it is inaccurate. I need an accurate position from the GPS Chip
Hey, so anyone knows where is GPS antenna located? I'm asking, because after putting copper plate in case to prevent bootloop problem, GPS doesn't work. Any suggestions?
CapricornLT said:
Hey, so anyone knows where is GPS antenna located? I'm asking, because after putting copper plate in case to prevent bootloop problem, GPS doesn't work. Any suggestions?
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Click to collapse
Take a look at step #4.
nirogu325 said:
Take a look at step #4.
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I saw that, but it's still not obvious where is GPS antenna located, now it's 1 of 5 chance that I will be correct.
CapricornLT said:
I saw that, but it's still not obvious where is GPS antenna located, now it's 1 of 5 chance that I will be correct.
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Hi,
user octavioromo and me had the same issue.
https://forum.xda-developers.com/nexus-5x/general/mod-copper-heatsink-t3679209
https://forum.xda-developers.com/showpost.php?p=75586886&postcount=26
I could not use the copper shim because the gps issues and changed to 0,5mm thermal pad with thermal paste.
(the 1mm gave me a blue dot on the screen)
I tried everything, paper under the contacs on the backcase etc... no chance. only changing the copper shim to thermal pad fixed it for me.
i dont know why only some phones have this problem.
I had no GPS after removing the motherboard once. I fixed it by lifting up the little connectors that touch the back cover antennas. (I used tweezers) I guess I pushed some of them down when I removed the motherboard. I hope this information helps you....
famaarca said:
I had no GPS after removing the motherboard once. I fixed it by lifting up the little connectors that touch the back cover antennas. (I used tweezers) I guess I pushed some of them down when I removed the motherboard. I hope this information helps you....
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This is for Nexus 5, not 5X.
The only way for Nexus 5X is to use thermal pad instead of copper :good: