Help GS4 signal issues - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Recently the signal on my phone no longer shows 3g/4g but instead 1x I know it's not where I am because my dads gs4 will have full 3g and I'll have like 1bar of 1x I have tried multiple ROMs I have also flashed MF9 radios via Odin thinking this would solve my issue but no luck their. Can someone please help me get my 3g/4g back
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Have you tried to update your prl and profile ?
Oh and are you on AOSP based ROM ? Most people tend to have lower signal and 1x more. Than when on touch wiz.
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Fixed it turned on airplane mode and then turned it off now I have 3g
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Related

Couple issues I am having

1. When I am roaming I go from full bars down to no signal. Have called sprint to not avail and have tried updating my prl.
2. Display doesn't always turn off. And always is coming on whenry I lose signal.
I did try a search but came up with nothing...thx
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Have tried roam control and that doesn't seem to work either.
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4.3 keeps dropping internet connection?

Hi, I've had my nexus 4 for about a month now, when I got the phone I automatically updated to 4.3.
Since the very first day I've had it, it has kept dropping internet connection randomly multiple times everyday? The signal bars will go from blue to grey and stay like that until I either reboot the phone or turn on airplane mode then turn back off again.
Its becoming a constant hassle trying to use the internet because it keeps hanging.
Has anyone else come across this problem? If so what did you do to fix it?
Thanks alot
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Do you mean WiFi or carrier data? And how good is your carrier signal? You can try flashing a different baseband.
For WiFi, try turning off Wifi Optimization.
Its the carrier data that keeps dropping, I also get full bars most of the time.
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dazza_84 said:
Its the carrier data that keeps dropping, I also get full bars most of the time.
Sent from my Nexus 4 using XDA Premium 4 mobile app
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Its surely a baseband problem..nothing to worry..
Just try different basebands and test them and see what works for you,but for that you need to be rooted..
Before you asking or creating a new thread refer to efrants thread for unlocking and rooting.:good:

mja 4.3 wifi bad connection after update reports?

my wifi at work is bad after I took the mja update. another guy at work is having the same problem after the update. it connects fine but it disconnects... non working wifi with one bar... and keeps switching from 3g to wifi every few seconds....or it would work for an hour then bad again. My home network is stable and doesnt do this... other people at work with different phones has stable wifi.
KStyles69 said:
my wifi at work is bad after I took the mja update. another guy at work is having the same problem after the update. it connects fine but it disconnects... non working wifi with one bar... and keeps switching from 3g to wifi every few seconds....or it would work for an hour then bad again. My home network is stable and doesnt do this... other people at work with different phones has stable wifi.
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I noticed this at my universitys WiFi. I connect and log in. Then it disconnects continously. It fricken sucks. But WiFi at my Apt and at my parents house is great. Never disconnects.
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daniel4653 said:
I noticed this at my universitys WiFi. I connect and log in. Then it disconnects continously. It fricken sucks. But WiFi at my Apt and at my parents house is great. Never disconnects.
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yes continously is the perfect word.
Might be a issue switching routers that use the same name
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My wifi has always been **** on this phone.
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I Oden the MJA modem only tar md5 now my wifi is staying conected
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I odined the mja modem on aosp, and running very well. So it must be a problem with mja kernel.
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Same here so I back on 4.2..... mja modem is ok. So it might be a kernel or the Rom it self
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[Q] reception

anyone having trouble with 3g reception, my phone seems to turn off the radio entirely every few minutes, it's either full bars and decent 3g or nothing at all, just no network messages
kewlio250 said:
anyone having trouble with 3g reception, my phone seems to turn off the radio entirely every few minutes, it's either full bars and decent 3g or nothing at all, just no network messages
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Are you on stock or custom? I usually just flash the most up to date radio when I have problems like that
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xxxrichievxxx said:
Are you on stock or custom? I usually just flash the most up to date radio when I have problems like that
Sent from my LG-D800 using XDA Premium 4 mobile app
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both stock and custom (namelessrom) i havent been able to leave base much (USAF) so it might be some sort of interference from something here, but my old phone had no problem getting signal here (galaxy s2)

[Q] Cannot get a signal AT ALL

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.
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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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And what is that supposed to do?
SB03 said:
And what is that supposed to do?
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Whenever I do this on my phone it puts it into cdma mode.
Will also help rule out what's wrong
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beezie42 said:
Whenever I do this on my phone it puts it into cdma mode.
Will also help rule out what's wrong
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That didn't work. But I fixed it using ##72786#

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