[SOLVED] No data connection - G3 Q&A, Help & Troubleshooting

Hi, guys! I've flashed Marshmallow last week and I can say I've got a new phone. Everything's awesome. Or it was until this morning. My data connection simply won't turn on. I've tried restarting my phone, taking out the battery, turning on the Airplane mode, but no luck. What should I try next?
Edit: It works now. Strange, but it works.

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[Q] cannot turn on Wi-Fi

Hellow to everybody! Sorry for my bad English.
I cannot turn on Wi-Fi and Wi-Fi router on my DHD. The phone just types "error" and nothing happens.
One day before, there was a bug: I turned the sound off and put my DHD into the bag. After one hour, i found my phone turned off. I tried to turn it on but the device only made 3 "vibrates" and LED indicator started to blink and that's all! I put off the battery, inserted it back - nothing helped me. So at the end i just put battery off for one hour and after that DHD turned on. Next day, when i needed wi-fi i found that i can't turn it on.
What i have tried: changed Roms, restored from backups, changed radio to the last version - nothing helped me. But one or 2 times after rebooting wi-fi router strated working for 1 time i.e. when i turned it off, i cannot turn it on again.
please help!
Hate to say it, but it sounds an awful lot like my DHD before I sent it off for repair. After having WiFi off for a few days, it gave me Error when I tried turning it on. Bluetooth and hotspot dead as well, along with volume up button. Tried a few other custom ROMs and 1.32 RUU and nothing worked. Sent it back and got it back, now everything is working again. All I can see in repair status, is a software update to official Gingerbread, but I doubt that was all they did. Good luck with your DHD mate, I think it needs a pit stop, like mine did :-(
I can only agree with that! Sorry m8
Thanks guys, tomorrow i'll try to send it to service center )

[Q] Radio dead - no connection

Hey folks,
Something strange happened to my HTC One X. Everything has been working as expected. As I was getting on a plane, I put my phone in flight mode. Right up to the point where I put it in flight mode, it was working fine - calls, data, everything. When I got to the other side and took off flight mode, it showed NO SERVICE. It will no longer connect to any network. I've tried several SIMs with no luck. I'm running CM 10.2 nightly builds, but I've reinstalled several different ROMs with no luck. Is my radio broken? Admittedly, I have been installing different radios, but I can't see how that could be the problem. It had been days since I installed a new radio, and it was working fine up to this flight.
If I use a tool like Test Your Android and view the SIM card information, it shows the correct SIM country, Operator Code, but no phone number. If I got to Settings, the IMEI shows normally as does the baseband. It just refuses to connect. Any ideas?
A month ago, somewhere in Vietnam, i put my phone in airplane mode while inside the plane. on landing i tried to turn the airplane mode off but it stuck in "turning off" and no network i was using a Vietnamese sim-card, so i took it off and i put back my tmobile one sim but that didn't help. i got stressed and i kept changing sims, turning the phone on and off, pressing the airplane mode button while sim tray was in or out , was trying every possible combination that i could think. after 30 minutes it found a network somehow and it came out of the airplane mode that was stuck. i couldn't believe it. Tho dunno what really fixed it but keep trying...
Interesting, thanks for sharing that. I have the feeling that if I were to go back to Spain, it would connect to Movistar again. But the question is, what do I do for the next two weeks.... =/
I will keep trying for sure.
n1kos said:
A month ago, somewhere in Vietnam, i put my phone in airplane mode while inside the plane. on landing i tried to turn the airplane mode off but it stuck in "turning off" and no network i was using a Vietnamese sim-card, so i took it off and i put back my tmobile one sim but that didn't help. i got stressed and i kept changing sims, turning the phone on and off, pressing the airplane mode button while sim tray was in or out , was trying every possible combination that i could think. after 30 minutes it found a network somehow and it came out of the airplane mode that was stuck. i couldn't believe it. Tho dunno what really fixed it but keep trying...
Click to expand...
Click to collapse
I just noticed something else. My battery is being drained constantly by Phone. As long as the device is powered on, Phone is using the battery. It's like the radio is stuck in call mode. wtf???
I exactly have the same issue.. Been searching for solution everywhere.. an somebody pls help us?
mcoolit23 said:
I exactly have the same issue.. Been searching for solution everywhere.. an somebody pls help us?
Click to expand...
Click to collapse
I eventually figured out my problem. Bad SIMs all the way. My SIM went bad, and the other two I tested with happened to both have gone bad. Finally got a good SIM and everything was back to normal.
boughness said:
I eventually figured out my problem. Bad SIMs all the way. My SIM went bad, and the other two I tested with happened to both have gone bad. Finally got a good SIM and everything was back to normal.
Click to expand...
Click to collapse
BTW - I didn't find this out until after I ordered and received a brand new phone, after assuming my radio was completely broken. I tried all three SIMs in the new phone and none of them worked. You can imagine how pissed off I was. Thankfully - magically - the new phone had a broken vibration mechanism, so I was able to get a full refund, and I'm once again happy with my HOX. Also took the opportunity to flash a clean CM 10.1.3 for a fresh start. Super happy phone.

Last ditch effort to fix wifi SGH=M919

Hello,
I have spent many hours attempting to solve the ongoing problem of the wifi button not responding but remaining gray when touched. Here is a quick chronology of symptoms and attempted fixes. I love everything else about the phone, especially the size, but am close to throwing my hands into the air. If anyone has any suggestions as to a Rom that may finally fix this, please let me know!
Wifi worked fine on phone for about 6 months, then became unreliable, not connecting after being out of range and coming back into range of wifi stations. I was usually able to force it to come on by a reset, pulling battery, turning off mobile data and calling *#0011# and turning wifi power saver off and on several times.
After this would no longer work, I rooted phone with CF-Auto-Root-jfltetmo-jfltetmo-sghm919.tar.md5 , was able to use wifi for a day or two, then nothing would force it on.
Tried multiple custom roms, including CM11 kitkat and CM12 Lollipop, same results, I would originally get wifi to fire up and connect, but after a day or two max, nothing.
Have flashed stock kernel for modem, nothing.
Took back of phone off, unplugged and plugged in blue antenna wire, nothing.
Recently flashed M919UVUFNH7_STOCK_ROOTED_DEODEX_KNOXLESS along with NH7_modem.tar.md5, wifi worked a little while, and as usual, wont respond to any resets, battery pulls, etc.
Thanks for any help you may be able to afford.
ive been having the same issue or a month or so now... cant seem to find a sulution anywhere. I too tried multiple roms, even the new 6.0 . I cant imigine its the wifi antennae because it works fine when it wants to... gettin frustrated with it.
MorrisonMike said:
Hello,
I have spent many hours attempting to solve the ongoing problem of the wifi button not responding but remaining gray when touched. Here is a quick chronology of symptoms and attempted fixes. I love everything else about the phone, especially the size, but am close to throwing my hands into the air. If anyone has any suggestions as to a Rom that may finally fix this, please let me know!
Wifi worked fine on phone for about 6 months, then became unreliable, not connecting after being out of range and coming back into range of wifi stations. I was usually able to force it to come on by a reset, pulling battery, turning off mobile data and calling *#0011# and turning wifi power saver off and on several times.
After this would no longer work, I rooted phone with CF-Auto-Root-jfltetmo-jfltetmo-sghm919.tar.md5 , was able to use wifi for a day or two, then nothing would force it on.
Tried multiple custom roms, including CM11 kitkat and CM12 Lollipop, same results, I would originally get wifi to fire up and connect, but after a day or two max, nothing.
Have flashed stock kernel for modem, nothing.
Took back of phone off, unplugged and plugged in blue antenna wire, nothing.
Recently flashed M919UVUFNH7_STOCK_ROOTED_DEODEX_KNOXLESS along with NH7_modem.tar.md5, wifi worked a little while, and as usual, wont respond to any resets, battery pulls, etc.
Thanks for any help you may be able to afford.
Click to expand...
Click to collapse
Need more info....did you try to just Odin the official firmware yet?
MorrisonMike said:
Hello,
I have spent many hours attempting to solve the ongoing problem of the wifi button not responding but remaining gray when touched. Here is a quick chronology of symptoms and attempted fixes. I love everything else about the phone, especially the size, but am close to throwing my hands into the air. If anyone has any suggestions as to a Rom that may finally fix this, please let me know!
Wifi worked fine on phone for about 6 months, then became unreliable, not connecting after being out of range and coming back into range of wifi stations. I was usually able to force it to come on by a reset, pulling battery, turning off mobile data and calling *#0011# and turning wifi power saver off and on several times.
After this would no longer work, I rooted phone with CF-Auto-Root-jfltetmo-jfltetmo-sghm919.tar.md5 , was able to use wifi for a day or two, then nothing would force it on.
Tried multiple custom roms, including CM11 kitkat and CM12 Lollipop, same results, I would originally get wifi to fire up and connect, but after a day or two max, nothing.
Have flashed stock kernel for modem, nothing.
Took back of phone off, unplugged and plugged in blue antenna wire, nothing.
Recently flashed M919UVUFNH7_STOCK_ROOTED_DEODEX_KNOXLESS along with NH7_modem.tar.md5, wifi worked a little while, and as usual, wont respond to any resets, battery pulls, etc.
Thanks for any help you may be able to afford.
Click to expand...
Click to collapse
I agree, flashing stock firmware is one of the first things that should be done in this case
Blasito777 said:
ive been having the same issue or a month or so now... cant seem to find a sulution anywhere. I too tried multiple roms, even the new 6.0 . I cant imigine its the wifi antennae because it works fine when it wants to... gettin frustrated with it.
Click to expand...
Click to collapse
Sent from my SM-G920T using Tapatalk
MorrisonMike said:
Hello,
I have spent many hours attempting to solve the ongoing problem of the wifi button not responding but remaining gray when touched. Here is a quick chronology of symptoms and attempted fixes. I love everything else about the phone, especially the size, but am close to throwing my hands into the air. If anyone has any suggestions as to a Rom that may finally fix this, please let me know!
Wifi worked fine on phone for about 6 months, then became unreliable, not connecting after being out of range and coming back into range of wifi stations. I was usually able to force it to come on by a reset, pulling battery, turning off mobile data and calling *#0011# and turning wifi power saver off and on several times.
After this would no longer work, I rooted phone with CF-Auto-Root-jfltetmo-jfltetmo-sghm919.tar.md5 , was able to use wifi for a day or two, then nothing would force it on.
Tried multiple custom roms, including CM11 kitkat and CM12 Lollipop, same results, I would originally get wifi to fire up and connect, but after a day or two max, nothing.
Have flashed stock kernel for modem, nothing.
Took back of phone off, unplugged and plugged in blue antenna wire, nothing.
Recently flashed M919UVUFNH7_STOCK_ROOTED_DEODEX_KNOXLESS along with NH7_modem.tar.md5, wifi worked a little while, and as usual, wont respond to any resets, battery pulls, etc.
Thanks for any help you may be able to afford.
Click to expand...
Click to collapse
I have a suggestion. Use the following link to get latest T Mobile firmware for the phone.
http://forum.xda-developers.com/showthread.php?t=
Sometimes it takes flashing the firmware twice for the full install of the radio to take properly.
To begin, remove the back of the phone, because your going to remove the battery after the first flash.
Boot into download mode by holding the volume down and power.
Assuming you know how to use Odin, before starting the first flash, unchecked the auto reboot option.
After Odin has reached the point of RESET, unplug the cable, remove the battery... Replace the battery, reboot into Download mode and
repeat the process, leaving auto reboot checked this time.
You are now completely stock. Your data will be basically left untouched.
Good luck.
Sent from my SM-T320 using XDA Premium HD app
Have you tried cleaning the hardware contacts on the antenna? I remember this same scenario on my old HTC Desire... the antenna contacts were dirty IIRC and they needed cleaning.
Wow, so I am not the only one still facing this issue! I flashed this rom http://forum.xda-developers.com/showthread.php?t=2539361 a few times and I eventually noticed the wifi issue as well.
Baseband: M919UVUF0H3
Kernel version: 3.4.0-2437203 [email protected] #1
Build number: KTU84P.M919UVUF0H3
Here's what I attempted:
1. Did a full wipe on the phone and installed full firmware 4.4.4 http://forum.xda-developers.com/gal...mware-firmware-kernel-modem-recovery-t3193835
2. Flashed stock kernel from the same link above
3. Installed SuperSU, flashed TWRP
4. Installed and ran TriangleAway to clear KNOX counter
Same issue as OP--at first wifi would work but the connection would not stick and I was unable to activate the wifi button anymore. I tried uninstalling KNOX but I get an error "Failed to create KNOX mode." When I reboot into TWRP, I get the message "E: failed to mount /efs (invalid argument)."
I discovered that my EFS folder is empty. I don't have a backup. Could this be related to the wifi issue? Am I screwed?
Finally got the wifi working. Took the white shell that covers the board off and cleaned the contact on the shell with a q-tip and isopropyl, but it looked kinda scuzzy so I scratched it a bit to expose bare metal again. Then I went to the board side and pulled up on the tiny piece of metal that springs to make contact, enough to bend it to a steeper angle for better contact. Wifi and BT working steady for over an hour now. Thought id share.
http://blog.brokenlcds.com/samsung-galaxy-s4-bluetooth-and-wi-fi-problem/
Heres a link with pics of the locations of the antennas
Edit:
though the wifi worked briefly after this, it stopped working shortly afterwards... back to square one...

wi-fi wont turn on

Hi gang, got a bit of a strange one here. had my G3 for about 15 months so far, and save for having to send it back after a few months for something i cant remember, its been a great phone until tonight when for some reason, it has decided to not connect to wifi or bluetooth. I have tried rebooting numerous times, and still the same. I have ran a factory data reset and still the same. When i factory reset the device, i tried to connect to the wifi however the phone simply rebooted and carried on rebooting until i took the battery out. If i get into the OS on the phone, and try to turn wifi or bluetooth on they simply say turning on, but never complete the turn on and seem to get stuck. My phone is an unrooted phone as i need it for banking apps that wont work due to the root.
I have searched on the net and have noticed numerous pages about this yet nobody appears to have a solution for it. i am going to give Three a ring tomorrow and organise the phone to be returned, but im just curious why this has happened? any ideas?
Same here, waiting for marshmallow official update, hope will work

Pixel 2 battery died, now WiFi won't turn on, and it says No SIM Card

My phone appears to be screwed and I don't know why or what happened, I'm super bummed. I've tried turning WiFi, mobile data, airplane mode on off, restarting in safe mode, etc. and nothing I've been able to do works to get WiFi or Mobile Connection to work again.
Right now I'm trying to kill the battery since that's what happened before the last time I used it but I don't know how that will help.
Anybody have some ideas on why or how this could happen? Phone is great otherwise.
Could a Factory Reset help?

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