hi, for those using INTERNATIONAL CARRIER who are experiencing poor signal strength problem IF YOU DISASSEMBLE your galaxy s2 before, heres a solution you can try:
was re-assembling my galaxy s2, discovered that the signal gone down badly if the screws on the back cover(not battery cover) is screwed too tightly. you might wanna try to open ur back cover and see the signal strength difference
cheers,
noapple
Hi,
I recently replaced my usb flex cable, and my signal has been very weak ever since. I have tried loosening the screws and removing the small wire (aerial) and putting it back on, but my signal is still very very poor. Has anyone else had this problem after disassembly?
It may not be relevant but i'll mention it anyway. The screwdriver I used had a slight magnetic charge, just enough to pick up the screws. Could this have damaged something?
Any help would be greatly appreciated, thanks
I do not think so.
Have you tried to enter *2767*3855# it is called factory reset.
But be carefull you will lost all your data/contacts/apps etc.
Do this
you will have a black tape above your memory card so remove that tape and keep it in a safe palce now you can see increase in signal or other wise use alluminium wire and insert it into that hole then you can find your signal would be increased....
Related
Hi,
yesterday my brand new Photon Q arrived, which - after doing the SIM mod - hopefully will replace my Sony Xperia Pro.
While playing around with the Photon there was some thing that disappointed me a lot:
The sensitivity of WLAN is very poor. I own 6 android devices with WLAN, and the Photon has the poorest WLAN sensitivity of all.
Using it about 10 m away from my router, through a thin wall of bricks, it tells me connection rates of about 2 MBit only (varies from 1 - 5 MBit).
My Xperia Pro shows - at the same place - connection rates from 60 to 65 MBit!
What are your expierences with WLAN on your Photon Q devices - compared to other devices you own?
Thank you.
P.S.: 2 m away from the router the speed is 60-65 MBit too, so maybe I have an issue with the antenna of the photon Q?
Hi.
Although this is pretty old, I feel like answering to it, since there never has been any answer.
What was it, that caused your poor WLAN? I guess, the guys who do the SIM mod, when they cut the small gap the inner cover where you insert the SIM later, they sometimes damage the antenna in that spot, which may be the WLAN antenna. What do you think?
I have a SIM-modded PQ, but no problems with wi-fi.When I disaśembled PQ I haven't seen anything antenna-like (wires, fractal mazes) on the motherboard...
The back piece of the phone that holds the speaker and camera flash also contains the antennas. On the bottom there is a piece of black tape that I'm pretty sure covers one. Maybe this piece was damaged where an antenna is located?
bmccrary said:
The back piece of the phone that holds the speaker and camera flash also contains the antennas. On the bottom there is a piece of black tape that I'm pretty sure covers one. Maybe this piece was damaged where an antenna is located?
Click to expand...
Click to collapse
That's correct. It holds all sorts of antennas, and on the back of the battery there must be the NFC antenna, right?
The seller, who modded the phone now told me, that at the bottm, where he made the SIM slot, there is the GSM antenna, not the WLAN one. So, today I'll get to open it and have a look, what else looks disordered. Maybe some plug on the mainboard or some of the antenna contact is bad. And just in case - I have one more cover from another PQ.
But if all this doesn't help - I'm grateful for more ideas
Yes, on the back of battery that's NFC antenna. Dismounting PQ is quite easy, but you have to have a T5 torx screwdriver.
I know how to unscrew the cover and even the mainboard of the PQ and I have precise tools.
Having done so and having replaced the cover with the slightly damaged antenna by another one where everything is intact - I experience the same weak WLAN It says 1 MBit/s in 2m distance or up to 20 MBit/s, when I am 10cm next to the access point. What else can be wrong or damaged?
If the cover is ok, maybe connectors to PCB are dirty/damaged (but you've probably already checked it). And how about another router? Maybe the one you're using is damaged or "doesn't like" PQ?
Thanks for the ideas, but from what I can see, they look good and clean and bent the right way to make safe contact And yes I tries other access points. I tried with my Droid4 providing a hotspot, my tablet, at my family's house, my girlfriend's, at work, at home... It's the same everywhere: very close or up to 3 meters, no obstacles, I have signal, but 1 or 6 MBit/s only, Further away or a door in between it's gone.
Can Android (CM 12.1 / 5.1.1) cause this, or must there be a hardware issue? How likely is it that these kind of problems are caused by a broken WLAN chip rather than an antenna problem?
I bought it in this condition from a guy who modded it (SIM mod)
Shaker1978 said:
Thanks for the ideas, but from what I can see, they look good and clean and bent the right way to make safe contact And yes I tries other access points. I tried with my Droid4 providing a hotspot, my tablet, at my family's house, my girlfriend's, at work, at home... It's the same everywhere: very close or up to 3 meters, no obstacles, I have signal, but 1 or 6 MBit/s only, Further away or a door in between it's gone.
Can Android (CM 12.1 / 5.1.1) cause this, or must there be a hardware issue? How likely is it that these kind of problems are caused by a broken WLAN chip rather than an antenna problem?
I bought it in this condition from a guy who modded it (SIM mod)
Click to expand...
Click to collapse
Flash stock if you'd like to rule out issues with CM - although I doubt it, definitely sounds like a hardware issue.
I returned the phone to the seller, it was definitely something wrong with the hardware. I ordered a fully working board from another seller, since I still had a damaged Photon Q anyway, SIM modded it myselt and got everything working now, incl. GSM and WLAN. Thanks here.
So I've dropped my Nexus 5 twice on concrete by accident. The first time it cracked the camera glass and the second time, half of the back cover clips popped off but I just pushed them back in. So in my attempt to DIY fix the cracked camera glass and replace it, I tried popping off the back cover (with proper plastic tools). But I couldn't get the clip under the SIM tray and the volume rockers so I gave up. But now, recently I can't get any signal when I'm inside a building and the signal when I'm outside fluctuates from full bar + LTE to no service to emergency calls only. I thought it might have been my SIM card so I went to T-Mobile to get another SIM which worked fine for like 10 minutes until the same problem came up again. So now I'm thinking could I have damaged the SIM reader in the phone or an antenna?
crazykidguy said:
So I've dropped my Nexus 5 twice on concrete by accident. The first time it cracked the camera glass and the second time, half of the back cover clips popped off but I just pushed them back in. So in my attempt to DIY fix the cracked camera glass and replace it, I tried popping off the back cover (with proper plastic tools). But I couldn't get the clip under the SIM tray and the volume rockers so I gave up. But now, recently I can't get any signal when I'm inside a building and the signal when I'm outside fluctuates from full bar + LTE to no service to emergency calls only. I thought it might have been my SIM card so I went to T-Mobile to get another SIM which worked fine for like 10 minutes until the same problem came up again. So now I'm thinking could I have damaged the SIM reader in the phone or an antenna?
Click to expand...
Click to collapse
More than likely the back cover is no longer making good contact with the body of the phone. Try applying slight pressure at the back on the top third of the phone and see if that helps.
Did you solve this issue? It sounds similar to a problem I'm currently experiencing.
Thanks,
Will
Nexus 5 loss of ntework signal
wch93 said:
Did you solve this issue? It sounds similar to a problem I'm currently experiencing.
Thanks,
Will
Click to expand...
Click to collapse
I have lost my network signal after I removed the back to improve the GPS function. It is not existing or very weak.
Has anyone a clue how to fix this?
Arno
ZeilerNed27 said:
I have lost my network signal after I removed the back to improve the GPS function. It is not existing or very weak.
Has anyone a clue how to fix this?
Arno
Click to expand...
Click to collapse
I have the same problem. A fix to this would be very helpful. My phone is now almost permanently stuck at H instead of LTE. When I do see LTE, it's one or two bars where it used to be full bars.
I'm not alone... Anyone can help us?
I found out what my problem was. While opening up the case, I must have slid my tool too far in. It actually got in the same spot as the antenna connection on the top right side, right above the battery. When I applied pressure to open the case, it unhooked the antenna. Re-opening the case and using some tweezers, I was able to re-position the wire and snap it back on like a button. Restored all of my connection.
I've tried, but don't work
Comrade1809 said:
I found out what my problem was. While opening up the case, I must have slid my tool too far in. It actually got in the same spot as the antenna connection on the top right side, right above the battery. When I applied pressure to open the case, it unhooked the antenna. Re-opening the case and using some tweezers, I was able to re-position the wire and snap it back on like a button. Restored all of my connection.
Click to expand...
Click to collapse
did u remove the speaker module to fix this issue?
ajaxcbcb said:
did u remove the speaker module to fix this issue?
Click to expand...
Click to collapse
I didn't have to remove the speaker module. I just had to reconnect the cable on the right back into it's slot. That's what got disconnected when I opened up the back.
Antenna
Comrade1809 said:
I didn't have to remove the speaker module. I just had to reconnect the cable on the right back into it's slot. That's what got disconnected when I opened up the back.
Click to expand...
Click to collapse
is there a cable?? from what i know the silver thing is the antenna
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What? No.... My situation had nothing to do at all with the speaker or any other portion of the phone aside from the antenna wire.
If you open up the back of the phone, on the right side of the battery, there is a small wire that runs along there and connects just to the right top side of where the battery ends. It is covered by a small black plastic piece that is supposed to stop it from coming off. I accidentally disconnected that wire with the tool I used to open the back of the phone. After reconnecting it to it's proper place, my signal came back without further issues.
I attached a picture with a red arrow pointing to where the antenna is connected. If it's loose, I would suggest reconnecting it and checking your signal again.
Comrade1809 said:
I didn't have to remove the speaker module. I just had to reconnect the cable on the right back into it's slot. That's what got disconnected when I opened up the back.
Click to expand...
Click to collapse
oh thanks mate. finally resolved the problem. seems the cable is actually kinda loose. after getting it hook up. signal is back and blazing. thanks
Broken black antenna cable
Comrade1809 said:
What? No.... My situation had nothing to do at all with the speaker or any other portion of the phone aside from the antenna wire.
If you open up the back of the phone, on the right side of the battery, there is a small wire that runs along there and connects just to the right top side of where the battery ends. It is covered by a small black plastic piece that is supposed to stop it from coming off. I accidentally disconnected that wire with the tool I used to open the back of the phone. After reconnecting it to it's proper place, my signal came back without further issues.
I attached a picture with a red arrow pointing to where the antenna is connected. If it's loose, I would suggest reconnecting it and checking your signal again.
Click to expand...
Click to collapse
my antenna clip broke off the main logic board. is there any way of fixing this. I get no service now
luv2vexx said:
my antenna clip broke off the main logic board. is there any way of fixing this. I get no service now
Click to expand...
Click to collapse
If you're really good at soldering you could give it a try. Otherwise I'd try and play the warranty card. I don't think there's a replacement part just for that, like there is one for the speaker or the camera. I may be wrong though.
similar problem
I bought a used Nexus 5 which suffered water damage as I later found out. The seller told me, that he used the phone until I bought it. Now when I want to use the phone with my sim, which is a new one, I have a very weak signal. I lose it most of the time. When I use the phone with a sim from another carrier (the same like the seller used) it's working fine. The phone also works with a third carrier but not with the one I want to use. There is also another phenomenon: when I take of the back cover, the signal becomes much stronger, still not good but much better. The sim is ok, because I use it now with my old phone and have no problems with the connection. Has anyone an idea where the problem could be?
I’m thankful for any help.
Excellent signal after reconnecting antenna
Thanks for the tip! I dropped my phone some weeks ago and since than I got bad reception, usually only EDGE and only outdoors but not really reliable. I had the chance to test my sim card in my friend's phone and with that I got excellent connection (40Mbps). I tryed factory reset but it did not help.
Solution:
After removing the plastic cover above the battery with a phillips #00 screwdriver I found that the antennas were not properly connected (the black and the white cables). I snapped them back to place, and after that my phone was able to connect to LTE.
I am super interested in this topic. I actually have a nexus 5(which has since been replaced by another nexus 5) that got some water damage on it from being in my clothes when they were hosed down. everything on the phone works, wifi, gps, speakers etc except cell signal. I get it sometimes for barely a second and then it is gone again. My thinking here is that my antenna is shot.
Anyone ever find out if this is a part that can be replaced? Would love to have two working nexus 5's just in case I need one as a back up or something.
Oh well! a bit over a year ago I stopped getting LTE and H from my carrier, tried everything and nothing worked, I guessed it was a factory defect and surrendered because I imported the device and couldn't send it thru warranty. I tried another carrier SIM and it did get at least H (no LTE however) so I switched to that carrier cause i wasnt gonna live with EDGE only, and I've been living like that for 14 months until now that I stumbled upon this thread, opened my N5, found out that same right cable antenna was not well connected, put it back where it belongs, now im getting full LTE, and I wanna kill myself! If I had noticed this before I wouldn't have had to go thru the mess of switching carriers and having to pay a more expensive plan! LMAO either way THANKS! Finally back on LTE !!!
Could you please tell how this antenna looks like? A photo of that would help me to fix my issue,. I have dropped my phone and I get as no service with signal strength as 0. Did u face this before u fixed ur antenna?
Hello,
Firstly I'm looking for a comment from an expert who has taken Nexus5s apart before. Also I'm beyond the point of returning the phone as this fault developed after replacing a screen and ribbon cable (after I smashed my phone badly). Any help or advice would be great.
So since screen and USB flex replacement on my D821 i notice that my phone signal will connect with full bars, then drop completely, I can also only get 2g where i was able to get higher. The same sim works fine in my nokia. The Wifi Signal is fine and gps works ok but the 'no service' thing makes my phone unusable. I have tried making sure all contacts are clean and even replaced the loudspeaker unit and the black antenna cable but to no avail.
Can someone put up a picture of exactly the components that are involved in the phone signal / 3g setup? Is it possible something could have been damaged on the mainboard to cause this? I can search for networks, connect (sometimes) then it will just cut out.
I tried google for days but cant find a schematic. Basically im trying to determine if there are any other parts i should try exchanging before giving up. It makes no difference how i hold (or dont hold) the phone.
Thanks
My original OnePlus One worked great in my area, my Moto E also get's signal all the time so this is not a network coverage issue. I have an OPO that will let me make calls perfectly with great clarity, and then a moment later will say it does cannot find a signal. If left on it will mostly have no signal but after a few power cycles boom there you go, full signal! I would think it was an antenna issue except when it does work I have full signal, not a weak signal like on my old S3 with antenna issues.
I am hoping this is just a modem issue that can be fixed by flashing the latest stock rom/modem but I am hoping I can get some input on the problem.
Thanks for your time!
earmuffs said:
My original OnePlus One worked great in my area, my Moto E also get's signal all the time so this is not a network coverage issue. I have an OPO that will let me make calls perfectly with great clarity, and then a moment later will say it does cannot find a signal. If left on it will mostly have no signal but after a few power cycles boom there you go, full signal! I would think it was an antenna issue except when it does work I have full signal, not a weak signal like on my old S3 with antenna issues.
I am hoping this is just a modem issue that can be fixed by flashing the latest stock rom/modem but I am hoping I can get some input on the problem.
Thanks for your time!
Click to expand...
Click to collapse
have you dropped the device? it could be hardware.....too. Have you tried different modems or not? If not that would be a start. (https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-t3462214). If the modems dont help then here what i would check...only if you confident.
Open the OPO and make sure the screws have not come lose as sometimes that can cause issues with signal.
Recently i has something similar but no as bad as you, i ended up replacing the, Speaker Antenna module, microphone flex. you could also replace the coax- i was suppose to be but the one i got sent was too long so i had to stick with the original one.
This is what they ebay guy sent me before i replaced the parts:
first thing to replace is the Coaxial cable (which carry's signal), check both coaxial sockets and the ports on the board it connects to
-Second (like you said) Mic Flex, although it is a tough call between the lower speaker unit and the mic flex as they are equally as likley to be at fault)
the speaker unit contains the GSM Antenna, the Mic flex simply takes the Signal to the main board from the speaker Module.
both would be Ideal unless you have time. speaker unit is relatively cheap.
finally check for any lose connections or wear to any of the Gold inside the phone where it makes a connection, using some wet and dry sandpaper rub the Gold plates Very very lightly to reveal a shinny Gold, some on the mic flex, some on the speaker unit, some on the other flex's,
and finally tighten all screws properly, often the screws can work their way out, pulling the connections away from each other.
I would suggest check the connection and wear to the gold as mentioned if u dont want to replace the parts. I found that the coax on mine has been disconnected on one end so i fixed this but it didnt help hence i ended up replacing the parts.
Service was spotty for me too.. I would have LTE and then the next second EDGE or no service at all. I eventually had to fastboot flash CyanogenOS 13 (latest stock for our device) and start over but it fixed my problem. I have not had a problem since.
Hi guys, I'm struggling to get a decent signal on my OPO.
3g barely works, I get 4mbps DOWN and 1mpbs UP when I'm lucky but most of the time it just doesn't work.
I'm using the latest official LOS 15.1 Rom and I tried all the modems in this page: https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-t3462214 but they all resulted in the same problem.
I've also tried many other ROMs, downgraded to stock cm13s, but nothing seems to work.
The opo is now 4 yrs. old but I feel it could live for so much longer if I can fix this problem.
Does anyone know the cause of this problem?
Have you taken it apart and ensured that the antenna is tightly connected?
And that note, the antenna itself might need to be reseated just to provide a better connection to begin with.
moe6 said:
Have you taken it apart and ensured that the antenna is tightly connected?
And that note, the antenna itself might need to be reseated just to provide a better connection to begin with.
Click to expand...
Click to collapse
I just did that but it didn't improve. I can't really tell if the antenna pin is making contact with the antenna when I'm putting the backcover on, but I noticed that the battery is a bit puffy, is it normal?
I had a broken battery and replaced it. The old was very puffy and my Phone did not even charge any more. But after the replacement i got Signal issues. Maybe i damaged something? And so did you?
nik012003 said:
I just did that but it didn't improve. I can't really tell if the antenna pin is making contact with the antenna when I'm putting the backcover on, but I noticed that the battery is a bit puffy, is it normal?
Click to expand...
Click to collapse
Discontinue use IMMEDIATELY. A puffy/swollen battery indicates that there is an internal leak in the battery and can be dangerous. Do not risk it, turn it off, do not use it and replace the battery (or have the battery replaced). It is possible that the battery is creating pressure somewhere or is causing something to slightly disconnect and that may be the cause of the issue. It can also simply be another problem, this varies from phone to phone.
Yes, it was the antenna connector. After disconnecting all cables from the mainboard and lifting it up i was able to connect the antenna back. Now i have perfect signal and a New battery (which needs to be calibrated some how now).