[Q] 4g problems - Samsung Galaxy S (4G Model)

since my t959v fell from top of my car and probably was run over by other cars i changed the lcd with a t959v full lcd assembly. and everything went back to normal except it will not pick up the 4g signal. i tried a diferent antenna and had t-moble reset the phone. still wont work, was wondering what the antenna modual is and might it help if i changed this,or does anyone have any other ideas.thanks

When cars ran over it or when u droped it ..it might of smashed a part in the antenna for the 4g part. Luckey it still works though
Sent From My Rockin' Galaxy S 4G

Related

Cell signal/wifi not working after replacing screen. Help

I've been working on repairing a htc sensation that got ran over. Had some spare parts so thought i try it out. All that seemed damaged at first glace when i open the phone was the lcd screen and digitalizer. Haven't noticed anythign broken on the board.. I've recently replaced both the lcd screen and digitalizer. The cell phone will not get cell signal and when attempting to turn wifi on, it gives me an error. These both used to work before it was damaged. I was wondering if anyone had a breakdown on the modules inside the phone, like which one was for wifi, and which one was for the cell signal?
So i got the phone to pick up cell signal now. Looks liek when the phone got ran over some of the pins were bent too far away from the backplate. Once i bent it out, it picked up signal just fine.
Wifi on the other hand is still giving me an error. I can't help but think it's hardware since i've flash firmware, radio, hboot, and rom already. Any one got ideas or anything? Where is the wifi located on the hardware?
Thanks for anyone who can help!!!
Hard damage dude...
Im sorry to know that
Sent from my HTC Sensation using Tapatalk
wasn't my sensation =P Mine's perfectly fine. just a friend of mines. Amazingly i've got everything but the wifi to work. These phones are built amazinly. Got ran over and the damage is no where near what i expected it to be.

After soldering new antenna pins, wifi doesnt connect

hello guys,
finally posting here after serious searching for days as some htc one s models have this wifi issue of weak signals or not connecting at all.
1. I have HTC One S S4 model.
2. Wifi used to connect only to WPA routers within a radius of 5 meters from router. Any router away frmo 5 meters wouldnt be captured by phone.
3. Tried different tweaks on antenna but nothing, checked through the wifi power option in advanced settings too.
4. upgraded official ROM, nothing happened.
5. Finally took the phone apart and changed the wifi antenna pins, resoldered new ones.
6. On these new pis, used the tweak (putting a U shaped wire touching antenna pins and cover)
7. Now, most of the times, it has full signal strength, but just stays on "Establishing Connection" and leaves.
My phone is bootloader unlocked, rooted with HBoot 2.15 and TWRP recovery installed.
The BT and 3G works perfect and fast
Android 4.1.1
HTC Sense 4
Software Versio 3.16.75
Kernel 3.4x
Baseband 1.12.50
Compilation 3.16.75
Please suggest me something... i am starting to have enough of this phone......
Thanks
Did you try flashing the Wi-Fi partition fix?
Sent from my rotary phone
Did you try flashing another Radio ?
I have taken my phone apart a few times I'm not sure what you soldered but I hope you used a low heat when you did it.
I would also take another peek inside and make sure some solder did not go somewhere it shouldn't have gone.
Thanks for the replies guys. I changed the phone with a customer who is almost every time on the move so don't use WiFi usually, I told him the issue and changed with his.
Let me get my hands on his HTC when he is back in town AMS I will try the suggested methods....
Previous information guys... Thx
Sent from my GT-I9100 using xda app-developers app

3G cell reception issue and fix

I just want to write this post maybe it will help anyone that has or will have the same problem. I looked all over the internet and could not find a fix, so here is my fix. Hope it works.
I work over seas on oil rig sites (remote locations) so I talk to my wife and family back home via different VOIP apps so its important to get a 3G signal, usually I lock WCDMA only network and get at least 1 bar which is sufficient. All of a sudden I started experiencing very weak 3G signal on my phone, weirdly this was at the same location where it had full bars in the past. This only applies for 3G, I could get 2G signal no problem.
In other areas that I know had good 3G signals and towers were close, it would work alright outdoors but once I get behind a door or a window 3G disappears even if I have it locked. I put in my sim card in my old Galaxy Nexus and it had 3G indoors with no problems at the same place and right next to the N5. So I started testing with both phones right next to each other when I lock 3G with the same SIM the Galaxy nexus would get 3 bars while the Nexus 5 would get the empty triangle (emergency calls only).
I couldn't get out of my mind that I dropped my Nexus 5 a hard drop, but I have a rubber case that took all the shock and the phone didn't get a scratch on it. This was before the 3G signal starts getting funny. Couldn't help but feel that I broke it somehow though. I felt like this might have got something loose inside. What didn't make sense to me is that if the antenna didn't work it wouldn't get 3G at all, indoors and outdoors.
So Step 1, I assumed it was a software issue. I went through a painful hard reset. To my surprise it still had the same issue afterwards.
Then out of desperation I saw this dude's video on how he couldn't lock GPS until he opened the back of the phone and found that the GPS antenna was not connecting straight.
youtube com/watch?v=K1-uCIb-t8I[/url]
So I started searching for where the 3G or 2G antennas are on the N5, but couldnt find anything that points that out. The phone was worthless to me like that so... I took a deep breath and decided to open the phone. Keep in mind, i'm an oilfield engineer and I still had a feeling i might [email protected]#k the phone up, specially that I did not have any tools with me.
So I watched this video on how to open up the back cover:
youtube com/watch?v=mkbmtu-1KSQ[/url]
and went through this guide on what's inside the N5:
theregister co uk/2013/11/05/nexus_5_teardown_shows_a_light_touch_thats_easy_to_fix/[/url]
Then I opened it, couldn't find anything to do, except maybe clean the minor dust off and blow on the ICs a bit. There is alot of pins that connect to antennas located on the back cover itself, so I closed it up, made sure its closed tight and all the pins touching, put in my SIM, and GOD DAMN!! IT WORKS AGAIN... I was getting full bars 3G!!!
So what I figured is that when I dropped it, one of those pins moved a little bit away and broke the connection between the antenna and the IC. Works great for the last 5 hours, solid connection.
Hope I would help anyone with this
PS: put the dots in the links, XDA won't let me post outside URLs
walid.eldalil said:
I just want to write this post maybe it will help anyone that has or will have the same problem. I looked all over the internet and could not find a fix, so here is my fix. Hope it works.
I work over seas on oil rig sites (remote locations) so I talk to my wife and family back home via different VOIP apps so its important to get a 3G signal, usually I lock WCDMA only network and get at least 1 bar which is sufficient. All of a sudden I started experiencing very weak 3G signal on my phone, weirdly this was at the same location where it had full bars in the past. This only applies for 3G, I could get 2G signal no problem.
In other areas that I know had good 3G signals and towers were close, it would work alright outdoors but once I get behind a door or a window 3G disappears even if I have it locked. I put in my sim card in my old Galaxy Nexus and it had 3G indoors with no problems at the same place and right next to the N5. So I started testing with both phones right next to each other when I lock 3G with the same SIM the Galaxy nexus would get 3 bars while the Nexus 5 would get the empty triangle (emergency calls only).
I couldn't get out of my mind that I dropped my Nexus 5 a hard drop, but I have a rubber case that took all the shock and the phone didn't get a scratch on it. This was before the 3G signal starts getting funny. Couldn't help but feel that I broke it somehow though. I felt like this might have got something loose inside. What didn't make sense to me is that if the antenna didn't work it wouldn't get 3G at all, indoors and outdoors.
So Step 1, I assumed it was a software issue. I went through a painful hard reset. To my surprise it still had the same issue afterwards.
Then out of desperation I saw this dude's video on how he couldn't lock GPS until he opened the back of the phone and found that the GPS antenna was not connecting straight.
youtube com/watch?v=K1-uCIb-t8I[/url]
So I started searching for where the 3G or 2G antennas are on the N5, but couldnt find anything that points that out. The phone was worthless to me like that so... I took a deep breath and decided to open the phone. Keep in mind, i'm an oilfield engineer and I still had a feeling i might [email protected]#k the phone up, specially that I did not have any tools with me.
So I watched this video on how to open up the back cover:
youtube com/watch?v=mkbmtu-1KSQ[/url]
and went through this guide on what's inside the N5:
theregister co uk/2013/11/05/nexus_5_teardown_shows_a_light_touch_thats_easy_to_fix/[/url]
Then I opened it, couldn't find anything to do, except maybe clean the minor dust off and blow on the ICs a bit. There is alot of pins that connect to antennas located on the back cover itself, so I closed it up, made sure its closed tight and all the pins touching, put in my SIM, and GOD DAMN!! IT WORKS AGAIN... I was getting full bars 3G!!!
So what I figured is that when I dropped it, one of those pins moved a little bit away and broke the connection between the antenna and the IC. Works great for the last 5 hours, solid connection.
Hope I would help anyone with this
PS: put the dots in the links, XDA won't let me post outside URLs
Click to expand...
Click to collapse
Thats nice , but lots of ppls have the signal issues with nexus 5 , and it isn't antena disconect for 90 % if us. I have separated the phone many times. , done about 5 hard resets's tried diffrent verions of radio's diffrent ROM's etc... nothing work's. Frineds have nexus 5 2 of them , and they can get 3g and 4g when they want, and i can only get Edge which is 2g. which is unusable..... I noticed that i have 3g only when i am in other towns, but not mine home town.... I tried diffrent sim cards, and diffrent netowrks, nothing seams to get the 3g at home, plus the gsm sucks, it interupts the calls.. So i must be the frequencies of the working 3g network in mine home town ? Then how i don't get 4g ? Why other ppl with the same phone, and same network have 3g when put next to mine ? NO one knows...
Same Issue
i am having the same issue, just having "E" Edge and cannot connect to 3G/4G, done everything to resolve the issue, took apart the antenna part of my phone but all the connectors and wires are intact, did hard reset several times, tried different ROMS including stock ROMS, tried the *#*#4636#*#* selected all the Radios but no luck, used 2 different sim cards but no use, same damn "E" in the status bar, APNs are all in place, nothing is wrong with the settings so far, dont know wots da problem with this set.
Please help us.

No 3/4G after water damage

Hello,
Someone gived a nexus 5 to me, because it was dead (dropped in toilet)
I took it apart and cleaned all with alcohol, and olmost everything is working fine now..
But when i place a simcard like mine (T-Mobile NL) it will give an G icon above with full coverage.
And it will stay @ G only so seems that 3/4G is not working anymore.. i THINK that the black speaker box
is damaged (where the 3/4G antenna is in?) Can someone tell me if i can test this?
And yes APN stuff is all ok. tried factory reset but still not working.
I think its solved.. i tried an other carrier today (Telfort) that uses KPN network. it said R above @ signal, and i was able to download / internet very fast.
And i want to give the phone to someone that uses Vodafone. Going to check this tommorow.
My gf has KPN to and i wanted to give the phone to her, so all fine! only wifi is not stable... can i get a new wifi antenna somewhere? (its in the back cover) or do i need to get a new back cover?

Calling works sometimes, no network available most of the time

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.

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