[Q] Cannot get a signal AT ALL - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Please help!!! I can't get a mobile signal for the life of me. I get wifi and LTE, but no 2G or 3G??? I've factory resetted, flashed modems only, tried different roms. Everything. I'm starting to think it might be the hardware. If anyone has any knowledge, please share. As of now I'm back on NAE baseband since the NG2 upgrade started all this. Or maybe it was mobile odin. IDK it was one of those.

I would rather have lte than 2 or 3g. You could always change the settings for mobile networks to only pick up 3g and see if that works.
Sent from my SPH-L720 using XDA Free mobile app

But I cannot make a call at all. There is no 3G period. Tried everything

Have you tried removing the sim card and powering the phone up without it?
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beezie42 said:
Have you tried removing the sim card and powering the phone up without it?
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Click to expand...
Click to collapse
And what is that supposed to do?

SB03 said:
And what is that supposed to do?
Click to expand...
Click to collapse
Whenever I do this on my phone it puts it into cdma mode.
Will also help rule out what's wrong
Sent from my SPH-L720 using Tapatalk

beezie42 said:
Whenever I do this on my phone it puts it into cdma mode.
Will also help rule out what's wrong
Sent from my SPH-L720 using Tapatalk
Click to expand...
Click to collapse
That didn't work. But I fixed it using ##72786#

Related

[Help][Urgent]WiFi won't turn on

Hi there!
I'm having a really bad problem at the moment on my s4 (i9505). Recently I upgraded from stock (MDE) to pre-rooted (MF8). Since then, my WiFi has stopped working, and it seems to be the only thing that has gone wrong. When I toggle WiFi on, it immediately toggles off (both in the quick settings, and through the settings panel). When I mean immediately, I mean within 1/10 of a second.
I flashed another ROM over it (OMEGA V7) and nothing changed.
I feel as though I've missed something vital, and would rather work on a fix for it rather than flash stock through Odin and start from scratch. Any help is very much appreciated.
Check settings in WiFi. There is an option for using cell or WiFi based on which one is faster, disable it.
Sent from my HTC One using xda app-developers app
c5satellite2 said:
Check settings in WiFi. There is an option for using cell or WiFi based on which one is faster, disable it.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
Thanks for the quick reply.
I already had that off (selected off by default).
Also check if your wifi timer is on.
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Gillion said:
Also check if your wifi timer is on.
Sent from my GT-I9500 using Tapatalk 2
Click to expand...
Click to collapse
No WiFi timer is also off.
This is very strange, I've searched google for hours and absolutely nothing like the issue I'm having.
Flash correct kernel
Sent from my HTC One using xda app-developers app
xxshabsxx said:
No WiFi timer is also off.
This is very strange, I've searched google for hours and absolutely nothing like the issue I'm having.
Click to expand...
Click to collapse
Ive had this issue before when my kernel and modem are mismatched but also when a weird setting is enabled... and I cant remember what it is.
Try a factory reset but do not restore your phone settings from google... only your contacts
Sent from my GT-I9500 using Tapatalk 2
Gillion said:
Ive had this issue before when my kernel and modem are mismatched but also when a weird setting is enabled... and I cant remember what it is.
Try a factory reset but do not restore your phone settings from google... only your contacts
Sent from my GT-I9500 using Tapatalk 2
Click to expand...
Click to collapse
Yeah just flashed stock through odin and did a factory reset.
Still not working. Really lost, and rather worried right now.
xxshabsxx said:
Yeah just flashed stock through odin and did a factory reset.
Still not working. Really lost, and rather worried right now.
Click to expand...
Click to collapse
So wifi will not turn on no mattrr what ?
And your not in airplane mode ?
This is beyond me then... I hope your hardware wasnt messed up.
Does your wifi still have a mac address ?
Sent from my GT-I9500 using Tapatalk 2
Gillion said:
So wifi will not turn on no mattrr what ?
And your not in airplane mode ?
This is beyond me then... I hope your hardware wasnt messed up.
Does your wifi still have a mac address ?
Sent from my GT-I9500 using Tapatalk 2
Click to expand...
Click to collapse
Not in Airplane mode.
I still have a mac adress.
No idea what's wrong. I literally JUST flashed a ROM. I've been doing this for almost 3 years and never have I seen an issue like this.
Might take the phone back.
xxshabsxx said:
Not in Airplane mode.
I still have a mac adress.
No idea what's wrong. I literally JUST flashed a ROM. I've been doing this for almost 3 years and never have I seen an issue like this.
Might take the phone back.
Click to expand...
Click to collapse
Something got messed up.
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Gillion said:
Something got messed up.
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Click to collapse
I can't really say why this happens but a lot of times with this phone it seems that the MAC address to the wifi is somehow lost and by removing the /data/.cid.info file you can somehow reset something that makes things work again. I assume it's somehow tight to different wifi network chip drivers in different kernels but I'm not sure. On some ROM's I have tried I have to do this on every boot...
http://forum.xda-developers.com/showthread.php?t=2357471

Wi-Fi Lost!

Out of the blue I've lost my Wi-Fi capability on my S4.
I've restarted & turned off the phone to no avail. My phone shows up on my router's control panel as active as well as a couple of apps I have.
I've also forgot the connection & reentered all necessary info. Mobile connectivity is fine but as soon as I switch Wi-Fi back on, no tweets, FB notifications, etc.
Suggestions, ideas? TX
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Are you on stock rom? Do other devices work on your wifi
jd1639 said:
Are you on stock rom?
Click to expand...
Click to collapse
Yes & I don't want to root. TX
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randun said:
Yes & I don't want to root. TX
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse
I don't want you to root either. It sounds like to me that it's a hardware issue with your phone.
Well, even though my router gave all indications that it was picking up the phone I tried a hunch. Rebooted the router & Wi-Fi is back!
Sent from my SAMSUNG-SGH-I337 using Tapatalk
randun said:
Well, even though my router gave all indications that it was picking up the phone I tried a hunch. Rebooted the router & Wi-Fi is back!
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse
Glad to hear it
Me too.
Sent from my SAMSUNG-SGH-I337 using Tapatalk

My galaxy s4 won't connect after custom ROM

My galaxy s4 lte us cellular version (sch r970) won't connect to the internet ams idk why.. It gets signal.. I went back to stock and its still doing the same thing
rileyfallan said:
My galaxy s4 lte us cellular version (sch r970) won't connect to the internet ams idk why.. It gets signal.. I went back to stock and its still doing the same thing
Click to expand...
Click to collapse
Is it configured correctly? (Proper apn are present?)
Sent from my GT-I9500 using XDA Premium 4 mobile app
I couldn't find the APN settings
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Also it won't make phone calls
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rileyfallan said:
Also it won't make phone calls
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Here are a few things you can do.
Restart your phone.
Call customer support of ur cellular company.
Flash the stock rom using odin.
Don't hesitate to hit the thanks button
Sent from my GT-I9500 using XDA Premium 4 mobile app
maxsam4 said:
Here are a few things you can do.
Restart your phone.
Call customer support of ur cellular company.
Flash the stock rom using odin.
Don't hesitate to hit the thanks button
Sent from my GT-I9500 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
rileyfallan said:
My galaxy s4 lte us cellular version (sch r970) won't connect to the internet ams idk why.. It gets signal.. I went back to stock and its still doing the same thing
Click to expand...
Click to collapse
As you said that you have flashed a custom ROM and now on stock rom,
Check whether you still have the IMEI #.
Also try insterting the Sim card on another device to check if Sim working, if working then try doing a factory reset.
Also once factory reset done as go in Setting-More Networks-Mobile Networks-Access points-Reset to default.
Try the above steps and let me know if problem still persists.
Dont forget to click the Thank button:good:

Wifi and data switch off randomly.

Have noticed about once a day at random times, my wifi and data signal will disappear when using the phone. I have to switch airplane mode on and back off to get my connections back. Not a major Issue, but slightly annoying.
Anyone else have this problem or know the cause?
Sent from my SM-G900F using Tapatalk
simacca said:
Have noticed about once a day at random times, my wifi and data signal will disappear when using the phone. I have to switch airplane mode on and back off to get my connections back. Not a major Issue, but slightly annoying.
Anyone else have this problem or know the cause?
Sent from my SM-G900F using Tapatalk
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Click to collapse
I'm having an issue where my wifi icon disappears but I'm still connected to wifi. Also, the toggle is grayed out. Pretty annoying. I'm on the Sprint GS5.
jhuff83 said:
I'm having an issue where my wifi icon disappears but I'm still connected to wifi. Also, the toggle is grayed out. Pretty annoying. I'm on the Sprint GS5.
Click to expand...
Click to collapse
The toggle is greyed out on mine too and cannot switch it back on. The only difference is that I loose wifi and network connection. Mine is o2 UK unbranded handset.
Update: my connections are still active when this happens.
Sent from my SM-G900F using Tapatalk
I'm getting the same thing here, the data and wifi icons occasionally disappear and the wifi toggle goes dark (as if it's not connected), but I'm still connected and get data just fine.
Do you reckon this is a hardware or software fault?
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simacca said:
Do you reckon this is a hardware or software fault?
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Click to collapse
I would think software.
Sent from my SM-G900P using Tapatalk
I have to this problem. Any fix ?
koko115 said:
I have to this problem. Any fix ?
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Click to collapse
Just as I read this comment it happened again lol. This time I did not loose connection though.
Would love to know the cause !!
Sent from my SM-G900F using Tapatalk
Think its Kitekat issue as I have it on my HTC m8 also
Sent from my HTC One_M8 using XDA Premium 4 mobile app
On my old galaxy s4 on kk i dont have this isue ?
And what samsung talk about this ?
Have now noticed that this is happening roughly the same time everyday.
Edit: update, Damn, it just happened again!!
Sent from my SM-G900F using Tapatalk
I had same problem on my G900f aften I installed an ad blocking app for non rooted Phone.
After deleting that non-working crap app.. Phone has not lost signal since.
Sent from my SM-G900F using XDA Premium 4 mobile app
joeherlev said:
I had same problem on my G900f aften I installed an ad blocking app for non rooted Phone.
After deleting that non-working crap app.. Phone has not lost signal since.
Sent from my SM-G900F using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I did install adblock (unrooted) for about 30 minutes and then removed it when I first got my phone. Not sure if the problem started before or after.
Sent from my SM-G900F using Tapatalk
Its not problem adaway. I test it.
Would be nice to find out the reason why this is happening.
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simacca said:
Would be nice to find out the reason why this is happening.
Sent from my SM-G900F using Tapatalk
Click to expand...
Click to collapse
Is problem solved ??? Or you will have to factoory reset I think.
joeherlev said:
Is problem solved ??? Or you will have to factoory reset I think.
Click to expand...
Click to collapse
It didn't happen yesterday so will wait for next samsung update and see if that solves the problem. Unless it gets worse then I will factory reset.
update : shortly after I posted this it happened again so I tested the connection and I was still connected to wifi.
Sent from my SM-G900F using Tapatalk
simacca said:
It didn't happen yesterday so will wait for next samsung update and see if that solves the problem. Unless it gets worse then I will factory reset.
Sent from my SM-G900F using Tapatalk
Click to expand...
Click to collapse
Okay...
Did you find any working ADBLOCKER for non-rooted G900F ?
joeherlev said:
Okay...
Did you find any working ADBLOCKER for non-rooted G900F ?
Click to expand...
Click to collapse
No, I stopped looking as I think they only work properly if your rooted.
Sent from my SM-G900F using Tapatalk
What's the best way to perform a factory reset?
Update: Just performed a full factory restore. Will let you know how I get on.
Sent from my SM-G900F using Tapatalk

Lost data on calls.

Have 4g when not on call. 1x on call. I have a us unlocked running on verizon. Latest twrp. Have tried Venom and ice. Loafing leesroid now to try. Advanced calling also messed up. I have no wifi calling option. Called verizon and all turned on. Have tried format data. Not sure what to try next. I'm s-off and unlocked. Any ideas?
Sent from my HTC6525LVW using Tapatalk
Also when I ran ice was first time I got video options on call. Grayed out tho. I'm sure I missed something but can't find it.
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losthyway said:
Also when I ran ice was first time I got video options on call. Grayed out tho. I'm sure I missed something but can't find it.
Sent from my HTC6525LVW using Tapatalk
Click to expand...
Click to collapse
Remove VOLTE/Advanced calling from your account. Flash the RUU. Factory reset using the stock recovery. Activate advanced calling from the phone itself (not the online verizon portal). Reboot phone after 5 minutes. Test.
dottat said:
Remove VOLTE/Advanced calling from your account. Flash the RUU. Factory reset using the stock recovery. Activate advanced calling from the phone itself (not the online verizon portal). Reboot phone after 5 minutes. Test.
Click to expand...
Click to collapse
So, go to website. Remove advanced calling and anything volte related. Then do phone and let phone reactivate everything? Just want to be clear. I respect your advice and have used your stuff on my phone for awhile.
Sent from my HTC6525LVW using Tapatalk
losthyway said:
So, go to website. Remove advanced calling and anything volte related. Then do phone and let phone reactivate everything? Just want to be clear. I respect your advice and have used your stuff on my phone for awhile.
Sent from my HTC6525LVW using Tapatalk
Click to expand...
Click to collapse
Yes. That's the cleanest method for testing.
Sent from my HTC6545LVW using Tapatalk
K. Doing it now. I will reply here when done. Thank you very much.
Sent from my HTC6525LVW using Tapatalk
No luck. Turned off everything. Wiped phone. Formated data. Used your ruu.exe to flash. Still 1x on calls and no advanced calling. Activated using phone only once rebooted. Any ideas?
Sent from my HTC6525LVW using Tapatalk
With stock software lost the video option on all. Was always grayed out anyway. And when rebooted the option to activate was grayed out. Did not get the verizon page to activate like on ice rom.
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Did it all again. This time worked better. Got new activation pages never had before. About activating after 5 minutes. Did that. Says added new features. But 1x still on calls and no video options on calls.
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losthyway said:
Did it all again. This time worked better. Got new activation pages never had before. About activating after 5 minutes. Did that. Says added new features. But 1x still on calls and no video options on calls.
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Click to expand...
Click to collapse
Did you reboot yet?
Yes, a few times.
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So after using dottat ruu.exe for . 22 and seems like after it settled I have volte working again along with wifi calling. Never seen a toast before that I was on wifi calling. Also HD calling working. No notifications for HD buy can hear the difference when I call people who have edge 7 and iPhone 6. Still running complete stock setup and hoping will stay when I flash Venom. Doing a backup for sure first. Still no video calling.
Sent from my HTC6545LVW using XDA-Developers mobile app
losthyway said:
So after using dottat ruu.exe for . 22 and seems like after it settled I have volte working again along with wifi calling. Never seen a toast before that I was on wifi calling. Also HD calling working. No notifications for HD buy can hear the difference when I call people who have edge 7 and iPhone 6. Still running complete stock setup and hoping will stay when I flash Venom. Doing a backup for sure first. Still no video calling.
Sent from my HTC6545LVW using XDA-Developers mobile app
Click to expand...
Click to collapse
Good deal.. I'm strongly believing that the VZW/HTC volte issues have finally been put to rest. This was a problem on the m9 as well and is no longer.
dottat said:
Good deal.. I'm strongly believing that the VZW/HTC volte issues have finally been put to rest. This was a problem on the m9 as well and is no longer.
Click to expand...
Click to collapse
You think if I flash Viper it will stay?
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losthyway said:
You think if I flash Viper it will stay?
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Click to expand...
Click to collapse
Yes.. I think it should as long as they have included the appropriate system files. (they normally DO).
dottat said:
Remove VOLTE/Advanced calling from your account. Flash the RUU. Factory reset using the stock recovery. Activate advanced calling from the phone itself (not the online verizon portal). Reboot phone after 5 minutes. Test.
Click to expand...
Click to collapse
I've tried this 5 times with a couple different ruu's with no luck. I first noticed this happening after I tried flashing leedroid nougat Rom and got no service on it so I restored my backup and got service but no data on calls, just 1x. When I go to the vpn, in the list of bearers, mine just shows ehrpd and LTE. My gf pixel shows gprs, ehrpd, hsupa, hspap, hspa, hsdpa, LTE, umts, and edge. The rest of the vpn settings are the same. I have also noticed when I go into settings, about, network that it sometimes shows "3107" in the operator section. Any other ideas?
Sent from my HTC6545LVW using Tapatalk
Evocm7 said:
I've tried this 5 times with a couple different ruu's with no luck. I first noticed this happening after I tried flashing leedroid nougat Rom and got no service on it so I restored my backup and got service but no data on calls, just 1x. When I go to the vpn, in the list of bearers, mine just shows ehrpd and LTE. My gf pixel shows gprs, ehrpd, hsupa, hspap, hspa, hsdpa, LTE, umts, and edge. The rest of the vpn settings are the same. I have also noticed when I go into settings, about, network that it sometimes shows "3107" in the operator section. Any other ideas?
Sent from my HTC6545LVW using Tapatalk
Click to expand...
Click to collapse
Did you wipe the radios? That's gonna be your fix
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dottat said:
Did you wipe the radios? That's gonna be your fix
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Click to expand...
Click to collapse
Wipe radios? Flashing firmware and/or ruu doesn't do that?
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Evocm7 said:
Wipe radios? Flashing firmware and/or ruu doesn't do that?
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Click to expand...
Click to collapse
Nope.
Fastboot erase modemst1
Fastboot erase modemst2
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dottat said:
Nope.
Fastboot erase modemst1
Fastboot erase modemst2
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Click to expand...
Click to collapse
Damn, I hate fastboot lol. Had a hell of a time getting my computer to see my 10 last time. Plus I use it so little I have to watch YouTube videos and how to every time I have to set it up again. So just wipe those two then reflash RUU?
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