MF9 ramdom reboots - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Ok so I have a problem I am pure stock never rooted my S4 and after I took the MF9 update my phone will get stuck in a bootloop untill I turn on wifi or airplane mode as soon as I connect to data it will happen again reboot I flashed the MDL modem and firmware through odin and it stops it will let me be on data with no problems but as soon as I go back to MF9 same problems happen. Is anyone else having this problem and is there a fix
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budde2 said:
Ok so I have a problem I am pure stock never rooted my S4 and after I took the MF9 update my phone will get stuck in a bootloop untill I turn on wifi or airplane mode as soon as I connect to data it will happen again reboot I flashed the MDL modem and firmware through odin and it stops it will let me be on data with no problems but as soon as I go back to MF9 same problems happen. Is anyone else having this problem and is there a fix
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Sounds like it is time for a call to Sprint and make them fix it. What I would do if not rooted.

CCallahan said:
Sounds like it is time for a call to Sprint and make them fix it. What I would do if not rooted.
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Whats wven more messed up is I have had 3 replacement phones and everyone has this problem i wonder if because the network is so unstable in my area right now if that could cause this to happen?
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budde2 said:
Whats wven more messed up is I have had 3 replacement phones and everyone has this problem i wonder if because the network is so unstable in my area right now if that could cause this to happen?
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If your network was unstable you wouldnt be able to get any signal at all but it wouldnt make your phone reboot. Have you tried factory reseting your phone??
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ROMANTiC KiD said:
If your network was unstable you wouldnt be able to get any signal at all but it wouldnt make your phone reboot. Have you tried factory reseting your phone??
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Yeah several times just did one and as soon as it connects to data it reboots. Damn I hate this ****
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Whatever is going on its in the kernel i flashed the MDB kernel and everything is working perfectly the only problem im having know is my phone says custom software.
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Dude you ain't the only one. The MF9 update has been a major pain the @$$ for a lottt of people. I wonder if Sprint is working on a new update. Hopefully push it out before the end of September. Although I am really liking MF9, I am probably in the minority. My device is smooth as hell and great battery life. Just yesterday I went 20hrs with 3hrs of on screen time!

Im having a similar problem. Random reboots when data is connected. I first thought it was the connection in my area that was causing the problem to (NV just started in Cleveland) until I encountered reboots while on WiFi. It doesn't matter what app I'm using as long is it uses the internet connection my phone may freeze vibrate two to three times then reboot. I even reapplied the MF9 update and the same problem exist.
I'm completely stock!
Thank You Based God!

Joe0113 said:
Dude you ain't the only one. The MF9 update has been a major pain the @$$ for a lottt of people. I wonder if Sprint is working on a new update. Hopefully push it out before the end of September. Although I am really liking MF9, I am probably in the minority. My device is smooth as hell and great battery life. Just yesterday I went 20hrs with 3hrs of on screen time!
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We must be lucky. I keep reading about all these issues, but MF9 had been awesome for me. Not a single problem, and definitely much better than MDL.
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maxpower7 said:
We must be lucky. I keep reading about all these issues, but MF9 had been awesome for me. Not a single problem, and definitely much better than MDL.
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+1 on that. Been on MF9 stock rooted since I got the phone a couple weeks ago and all has been well. I wonder if it could be a hardware issue mixed with something thats in the MF9 update. Sound crazy to anyone?
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Yeah it looks like it is for sure the MF9 kernel I flashed mdl kernel and everything is good on that kernel. As soon as I odin mf9 and connect to data it happens again thanks for all the responses
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MF9 has given me one reboot so far. Battery life is way better than previously.
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tenaciousj said:
MF9 has given me one reboot so far. Battery life is way better than previously.
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Yeah its seems my problem is isolated. I cant find anyone other than 1-2 other people with this problem. I am back on MDL and everything is working perfect. I get my new device on fri I hope it has no problems
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Check your source for the MF9 kernel you have and try downloading and installing a different one.

budde2 said:
Yeah its seems my problem is isolated. I cant find anyone other than 1-2 other people with this problem. I am back on MDL and everything is working perfect. I get my new device on fri I hope it has no problems
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+1 I went back to MDC. Let it update to MDL then let it update to MF9. Same issue. So I just Odined MDL and left it alone.
Thank You Based God!

amwworks said:
+1 I went back to MDC. Let it update to MDL then let it update to MF9. Same issue. So I just Odined MDL and left it alone.
Thank You Based God!
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That's what I did si mdl works perfect. I will have a new phone hopefully today or Monday
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Ok so I go a new device a brand new S4 and still this one does the same **** what the **** is going on this is the 4th one I give up
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Related

Circle of death?

Anyone experience this yet? I've gotten it twice now. I'm completely stock rooted with twrp recovery so I don't understand why it's happened. I thought the dreaded circle was kernel related. Ps. I'm also running xposed framework.
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xxxicu812 said:
Anyone experience this yet? I've gotten it twice now. I'm completely stock rooted with twrp recovery so I don't understand why it's happened. I thought the dreaded circle was kernel related. Ps. I'm also running xposed framework.
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what is the circle of death? i never heard of it..
evo401 said:
what is the circle of death? i never heard of it..
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It looks like this minus the bars. What it boils down to is no data no network. absolutely no connection of any kind. It was a big issue on my e4gt for awhile before it was discovered as a kernel related issue then eventually solved.
Or so I thought.
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I would say you are in a bad area for signal. Or Network Vision is being worked on in your area, which is a good thing. I've never seen that happen on my phone unless I update the prl and profile. Never saw it on my S3 either.
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Android 4.3 issues?

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Quietstorm11364 said:
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Keyboard not working
Lol
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Lol!
Seriously, all the 4.3 issues i had with my s4 were fixed by the indian mj9 firmware.
tclocki said:
Lol!
Seriously, all the 4.3 issues i had with my s4 were fixed by the indian mj9 firmware.
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agreed
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phone hangs from time to time and sometimes when i use camera phone freezes totally.
i've to pull out the baterry and restart.
just got the s4 gti9505 and starting to regret it.
No real issue's for me, but i've been using only custom roms.
The correct firmware does help.
rayenvs said:
phone hangs from time to time and sometimes when i use camera phone freezes totally.
i've to pull out the baterry and restart.
just got the s4 gti9505 and starting to regret it.
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Click to collapse
Totally happy with my S4. Have had it from May and never had a single issue or FC.
With root and all bloatware frozen, I can easily do a full day with 4-5 hours screen time.
So I'm in no hurry for any 4.3 or 4.4 update whatever ... You know "Don't fix it if it's working" :victory:
That's true.
I installed a complete new firmware. Working fine now.
Had a problem with my sd card ,but seems that my sd card was defect
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Phone call problems.

Hey all I was just wondering if anyone is having problems with receiving calls. It seems to happen more and more lately. What happens is the phone rings and I answer it but I can't hear them and they can't hear me. The phone then disconnects. It doesn't matter where I am so I don't think it's a phone network problem. I travel all over the place as I'm a truck driver. It seems to happen more when connected to a Bluetooth device but now it's starting to happen when not.
I'm am rooted and at present running on stock. It doesn't matter if I'm on stock or a custom ROM it does the same thing. I'm really regretting getting this phone and ready to go back to my DROID RAZR MAXX HD. I like the phone its blazing fast but it has issues which I've asked about before. I bought this phone on the Edge plan and did line swapping to keep unlimited data. But I'm ready to throw it in the garbage or sell it real cheap. Or starting all over and leaving it unrooted and see what happens. Really wanted root so I could tether when ever I want. Any suggestions?
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Rooted and stock here with zero issues. Maybe hardware issues?
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Deleted
Reilly1812 said:
Rooted and stock here with zero issues. Maybe hardware issues?
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Looks like I'm going back to my Motorola and throwing this in the trash with the tech support and replacement device issues. This will be the last Samsung device I buy.
RAZR is a great phone. Sorry you had issues with the Note. Did you see this thread? http://forum.xda-developers.com/showthread.php?t=2680962
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Reilly1812 said:
Rooted and stock here with zero issues. Maybe hardware issues?
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Reilly1812 said:
RAZR is a great phone. Sorry you had issues with the Note. Did you see this thread? http://forum.xda-developers.com/showthread.php?t=2680962
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Yes exactly one of the horror stories I'm talking about
Well I Odin back to stock and still having the same problems. I'm headed to Verizon today to see what they say. Hopefully I get lucky and don't get a bum replacement device.
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I sold my note 3 back in January because of connectivity and phone quality issues ... been really missing the spen, multiwindow and sceen size as of late. Was thinking about coming back to the N3 but then I see stuff like this and remember why I left [emoji20]
May grab a note 2 instead ...
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sph-L720 freezes when making a call

hello friends. I have a galaxy sph-L720 s4 unlocked and using it with tmobile. the problem is that every time I make a call, the call freezes and I have to wait 20 to 30 seconds to respond to me and make the call again. rather, the phone will freeze every time I make a call. nae Filmware I'm running and I've re-flashed 2 times and still the same. any suggestions? thanks
Hmm... I am having the same experience and I too am flashed to T-Mobile. Currently running Carbon Rom 4.4.2. The lag occurs on both NAE and MF9 modems.
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There is a quick fix for this, sell your Sprint phone and buy a T-Mobile version.
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cruise350 said:
There is a quick fix for this, sell your Sprint phone and buy a T-Mobile version.
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It's just my secondary phone so no that's not an option for me. I was just confirming for the OP that it's not an isolated issue.

S4 no sound

okay so im going to start from scratch, my s4 has randomly started giving me no sound, ive had it tested and all my components are good so it has to be software.
i have flashed multiple roms, modems and wifi fix
but im willing to give anything a go just let me know!
beginning to really stress me out! i have included a pic of my current setup, cheers and thanks for the help!
does no one have a clue on this?
i was thinking maybe wait for the lollipop update and it may sort itself out?
or flash another stock rom and gsm modem only?
i have already triggered knox so not really worried about the method, anything would be of great help!
danay said:
does no one have a clue on this?
i was thinking maybe wait for the lollipop update and it may sort itself out?
or flash another stock rom and gsm modem only?
i have already triggered knox so not really worried about the method, anything would be of great help!
Click to expand...
Click to collapse
Add more screenshots about the APP.
Hope this helps
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Does this help?
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danay said:
Does this help?
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Where did you get that Bootloader? shows on your screenshot? xxegng8? Its supposed to be UGNG8 , Try flashing the bootloader UGNG8
Appreciate that repulsa, I can't seem to find any downloads here for bootloaders?
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danay said:
Appreciate that repulsa, I can't seem to find any downloads here for bootloaders?
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Click Here Turn off your phone (Wait atleast 10 sec) boot into downloadmode , Open odin / Put the file in BL / Connect the cable and flash away.
ill just give that a go !
wow, so far so good repulsa! finally got to the bottom of it something so simple!
thanks a bunch!!!
danay said:
wow, so far so good repulsa! finally got to the bottom of it something so simple!
thanks a bunch!!!
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Lucky you I hope everything is working fine now , Anyways im going to bed Have a nice weekend
That deserved 3 thanks! You know how long I've been chasing my tail on this!
Thanks again
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Oop, seems like it was short lived, sounds dropped out again
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It seems to stay for a short period, drop out then return with a restart, any ideas?
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danay said:
Oop, seems like it was short lived, sounds dropped out again
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Im not sure what's goin on . It might be a Hardware issue? Try pulling the battery out / factory reset/ wipe data in recovery . If its still.doing the same issue . Wait And Let see what firmware @Joku1981 will give you . It might fix this problem . Anyways Goodnite for now .
Yes sorry to disturb you, I've had my device tested it's been going on that long it all came back okay :/ thanks a lot it's definitely improved!
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factory reset no luck, cache wipe no luck, battery pull no luck, i was thinking try flash a stock rom? have a feeling ive got a few duff ones, any recomendations?
Whether it helps or not apart from no sound, videos play in slow motion, battery when unplugged from fully charge drops to around 80% and sometimes when the phone is booted it boots with no signal and a black top bar, before restarting again normally
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