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....
Hi
I recently did a rebuild on my one s to replace the vibrate motor/ribbon cable & also inadvertently resolved my touch buttons not working
Since then unless the phone is in a very strong signal area (we have a femto cell in the office which it connects to fine) it gets nothing at all - my sim works without issue in other phones so that's not it
I understand that the GSM antenna is in the lower section of the phone, I've checked all the gold contacts and the wire running down from the mainboard to this daughterboard, disassembled and rebuilt etc but the issue persists.
My question is, is it worth going through the radios and flashing to see if thats it - or could it be the replacement part was faulty?
Any advice or things to try would be appreciated
Cheers
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.
I had a broke screen, I replaced it but now my nexus 5 has no cell signal. It knows there is a sim card in there but says no network is available. My sim works in other phones and other sims do the same in the nexus 5. I took the cover off the sim card slot and the pins look straight and no damage. I bought new antenna cables in hopes that was all it was but same result. I also did a fresh image flash but that didnt help. Wifi, BT and GPS all work.
Any other options?
How's the antenna wire, connected properly?
I bought two new ones (white and black) and it didn't help/change anything
nothing?
The pictures don't work
chasehammer said:
I had a broke screen, I replaced it but now my nexus 5 has no cell signal. It knows there is a sim card in there but says no network is available. My sim works in other phones and other sims do the same in the nexus 5. I took the cover off the sim card slot and the pins look straight and no damage. I bought new antenna cables in hopes that was all it was but same result. I also did a fresh image flash but that didnt help. Wifi, BT and GPS all work.
Any other options?
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Click to collapse
The black wire on right side is not connected to the mobo I bet. I just went through 2 months of flashing, reflashing, trying to figure it out, when you pry open side near volume rocker the cable gets out of place and it is enough to mess signal up
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.