[Q] 4G Authentication Failed - Epic 4G Q&A, Help & Troubleshooting

I haven't been able to connect to 4G at home since I got this phone. I haven't tested it outside of my household area but I know 4G service is here because the rest of my family has GS4 and GS2 phones and they get 4G service in the house. Every time I try to connect I get "initializing..." then "connecting" then "disconnected" with a "Authentication Failed" popup afterwards. I've updated the PRL and profile but still a no-go.
My current setup is:
ROM: Stock FC09 Odex BML (Rooted)
Kernel: ShadowKernel BML v1.01
Modem: DK28 (I tried all 16 modems available here and none gave me 4G service)
Recovery: CWM 5.0.2.7
Anyone have any ideas as to what is wrong?

Your problem is the piss poor radio in the Epic. That coupled with the horrendous building penatration of Wimax make for a bad indoor 4g experience.
Sent from my SPH-L720 using Tapatalk 2

frostedunit said:
Your problem is the piss poor radio in the Epic. That coupled with the horrendous building penatration of Wimax make for a bad indoor 4g experience.
Sent from my SPH-L720 using Tapatalk 2
Click to expand...
Click to collapse
Well isn't this just lovely lol. The only thing thats gonna keep me to this phone I guess is the physical keyboard XD

-x]Trunks[x- said:
Well isn't this just lovely lol. The only thing thats gonna keep me to this phone I guess is the physical keyboard XD
Click to expand...
Click to collapse
Don't mistake my criticism for dislike. For all of it's faults, the OG Epic is probably the best thing to hit smartphones since the original Blackberry.
Go check out some of the other 2+ year old devices and see how many of them still have new ROMs being put out and the number of former owners who drop by the forums to help out the noobs.
You have much more than a physical keyboard to be thankful for, my friend.
Sent from my SPH-L720 using Tapatalk 2

Related

When will the first update be out ?

Currently a Nexus-S 4G owner, thinking of getting the GS II, but keep reading so many issues with WiFi...Network/Radio...SMS text problems...I am scared to upgrade to the S II, until an update/patch is released to fix these issues I have read about.
Also my Nexus-S has pretty crap WiFi signal already, in my house with a great WiFi setup, it drops way too often, my EVO 4G was rock solid always connected.
Any news or opinions on this ?
Zorachus said:
Currently a Nexus-S 4G owner, thinking of getting the GS II, but keep reading so many issues with WiFi...Network/Radio...SMS text problems...I am scared to upgrade to the S II, until an update/patch is released to fix these issues I have read about.
Also my Nexus-S has pretty crap WiFi signal already, in my house with a great WiFi setup, it drops way too often, my EVO 4G was rock solid always connected.
Any news or opinions on this ?
Click to expand...
Click to collapse
Honestly, I haven't had ANY of these problems. Maybe I got one from a different batch because I was backordered.
My phone seemlessly goes from WiFi to 3G and back again without any intervention from me, in weak OR strong coverage areas. To my knowledge, all my texts have gone through.
I just rooted late last night (with the stock kernel), and so far I haven't had any issues, either.
No issues what so ever trust me. Ask stock phone. Always on wifi when at home. Wifi turns on and connects super quick. text calls come thru right away.
.: sent from my Samsung Galaxy S II Epic 4G Touch :.
I havent experienced any of those problems either.
Sent from my SPH-D710 using Tapatalk
Zorachus said:
Currently a Nexus-S 4G owner, thinking of getting the GS II, but keep reading so many issues with WiFi...Network/Radio...SMS text problems...I am scared to upgrade to the S II, until an update/patch is released to fix these issues I have read about.
Also my Nexus-S has pretty crap WiFi signal already, in my house with a great WiFi setup, it drops way too often, my EVO 4G was rock solid always connected.
Any news or opinions on this ?
Click to expand...
Click to collapse
All those issues are rooted phone issues not stock....
Sent from my SPH-D710 using xda premium
craigbailey1986 said:
All those issues are rooted phone issues not stock....
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
That's bs. Sorry.
nabbed said:
That's bs. Sorry.
Click to expand...
Click to collapse
I havent had a signal problem or anything listed in the other threads
If I got a phone that didnt do what I needed it to do I would exchange it untill I got one that worked.... (thank god best buy is honoring my 30 days rather than the 14) Update or not these "issues" are more in root users than stock....
Sent from my SPH-D710 using XDA App
The T-Mobile version is coming out with 2. 3. 5 which I saw the original gs2 got it and it boast performance alot I read I am wondering when we will get the 2. 3. 5 update
Sent from my SPH-D710 using XDA App
nate420 said:
I havent had a signal problem or anything listed in the other threads
If I got a phone that didnt do what I needed it to do I would exchange it untill I got one that worked.... (thank god best buy is honoring my 30 days rather than the 14) Update or not these "issues" are more in root users than stock....
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
That's bs
Sent from my SPH-D710 using xda premium
I guess any disagreement is bs to you guys....lol... sorry but no problems here on stock. But this thread will quickly turn into a troll thread so last post here
Sent from my SPH-D710 using xda premium
craigbailey1986 said:
I guess any disagreement is bs to you guys....lol... sorry but no problems here on stock. But this thread will quickly turn into a troll thread so last post here
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
I agree 100% with your sentiment IRT the thread...but, I had 2 LOS in the 5 or 6 days I was rooted. I rooted and had another 2 over 2 or 3 days. Stock kernel reinstalled and I've been good so far, but, I think blaming the kernel is foolish. The problem occurred before I rooted and after I rooted.
Does the fact that I am now rooted with a stock kernel and haven't had the problem suggest to you that only rooted stock-kernels are without fault?
You guys know that you can have everything stock, including kernel/rom/recovery, except the rom would also be rooted by addition of su binary/apk/busybox?
I haven't had any los or any other severe issues before or after I rooted the phone.
It may be that since I live in a small university town, my towers aren't getting upgraded to rev b, but yours are. These issues may not have anything to do with the phone at all. Maybe it has something to do with the sprint maintenance timing.
Or maybe it's because some people bought their phones from third-party retailers, and the phones weren't properly activated.
Or maybe it's some commonly used app that people with problems have installed, and I and others don't have installed.
I've had minimal to no issues personally. And I've had none while using stock Kernel. Using i9000 kernel I had a few LOS, but infrequent.
I also owned the Nexus S...and this is BY FAR a better device from a connectivity comparison.
Remember that the complaints you see are misleading...in that people are more apt to post about an issue, versus those that don't. It's human nature.
rooting or not has NOTHING TO WITH THE ISSUES!!
- I have had a stock phone since the day it came out, and have "watchdog lite" installed, watchdog alerts me about 10-15 times a day that "suspend", "events/0", and "base system" in my phone are using over 50% CPU while the phone is sleeping... LOL, it JUST happened again while i was typing this...
- also had the LOS issues 2 times, has to restart the phone to get signal again
- once, i was in a call, and when i went to "end" the call, i could not click the end button... the other side wud NOT hang up because it was customer service, they r not allowed 2 hang up on a person... so i had 2 restart the phone to fix this
- sometimes i click the power button to wake the screen, n nothing happens for about 5 seconds... so i click the button again, and the screen turns on and back off right away... n den i have 2 click the button a 3rd time to wake the phone...
- sometimes app just close randomly, and if you try to open the app again, its begins from the VERY BEGINNING, so w.e. u were doing in the app is lost... this sucks for games, and if ur in the middle of something important
- when the phone is on charge, the keyboard sometimes acts weird, typing letters u never click... and also u have 2 touch the screen 2wice sometimes 2 make selections... only happens when on charge, u take it off charge, n its back 2 normal right away
cant think of anything else as of right now... but there are some issues in the phone that can most likely be fixed either via root, or thru a sprint update...
I had the nexus s 4g and due to the antenas that phone was practically unusable especially on wifi. The gs2 doesnt have any of those issues. This is the first phone since the evo 4g that has impressed me snd i have owned the evo 3d and photon as well.
craigbailey1986 said:
All those issues are rooted phone issues not stock....
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
I seem to be having an issue with battery draw whenever wifi is on.
I'm not rooted, my phone is 100% unmodded. I haven't even installed a different launcher.
Im hoping for an update so my games dont continue to crap the bed 10 mins into them. Nothing like trying to lvl up in nova and never finishing an online match.
Sent from my SPH-D710 using xda premium
LOS can occur with or without the root. I've only experienced it once but it was in an area with good coverage and no one else with Sprint phones at my office encountered it when I did. It only happened once but I do NOT have a modified ET4G - it is stock. There is a detailed thread on this on android forums and it can occur with or without a root. Apparently it was listed on android forums or android police that this is a known issue. I don't use wifi but it seems to be a common issue for people using wifi from what has been reported.
That being said, I would highly recommend this phone to anyone looking to get a phone.
ipetloudog said:
Im hoping for an update so my games dont continue to crap the bed 10 mins into them. Nothing like trying to lvl up in nova and never finishing an online match.
Click to expand...
Click to collapse
Yeah... you would think that being unable to handle games for more than 10 minutes would have been something that the engineers would have caught during development...
I have had no issues either. I had one LOS after I flashed the rooted kernel. Went right back to stock kernel and no issues since. And none before the rooted kernel either.

How to fix horrible Wifi reception after fc07 venum rom?

Okay so I was trying all the ics leaks over the past few weeks, always had good wifi too but then venum made one so I tried it. I noticed my wifi had a low signal even tho I was sitting next to the hotspot.. so I flash to calkins rom and I still had the same issue. I even went back to calkins el29 rom and the problem still remained.. I've tried changing modems a few times didn't help. There's nothing wrong with the hotspot my brothers stock epic touch and my HTC flyer get perfect signal. And its not any slower.. it just won't reach anywhere but in the living room... can some one help me fix this ://
Sent from my SPH-D710 using xda premium
dspain28 said:
Okay so I was trying all the ics leaks over the past few weeks, always had good wifi too but then venum made one so I tried it. I noticed my wifi had a low signal even tho I was sitting next to the hotspot.. so I flash to calkins rom and I still had the same issue. I even went back to calkins el29 rom and the problem still remained.. I've tried changing modems a few times didn't help. There's nothing wrong with the hotspot my brothers stock epic touch and my HTC flyer get perfect signal. And its not any slower.. it just won't reach anywhere but in the living room... can some one help me fix this ://
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Have you updated your PRL and profile?
You have no worse or better signal now. If you'd have read all the bug reports before blindly jumping to ICS, you'd know that the signal bars for all ICS builds are screwed up. It seems totally random when it displays or decides NOT to display signal.
You don't HAVE an actual signal issue, you have a display issue. Install a dB monitor and you'll see this and confirm for yourself.
Compusmurf said:
You have no worse or better signal now. If you'd have read all the bug reports before blindly jumping to ICS, you'd know that the signal bars for all ICS builds are screwed up. It seems totally random when it displays or decides NOT to display signal.
You don't HAVE an actual signal issue, you have a display issue. Install a dB monitor and you'll see this and confirm for yourself.
Click to expand...
Click to collapse
The title suggests that Venum ROM screwed up your wifi which I don't think is possible. I have been using 2.1 since it same out and wifi is fantastic on it just like it has always been on this phone. It stays connected even if I walk 2 houses down from me
Sent from my SPH-D710 using xda premium
I knew about that bug but that doesn't explain why on 2.3 I can't get Wifi on my epic in my moms room where my flyer has perfect signal I'm not on 4.0 anymore... :/
Sent from my SPH-D710 using xda premium

Help with E4GT radios needed

I had the Evo 4g for about 1.5 years and it was a great phone. It started having problems so I decided to upgrade to the Samsung S2 on Sprint. Ever since I got it I have low signal most everywhere, can't connect to 4g unless I'm out under open sky, and my phone flips to roaming a lot. I have updated everything but still no fix. I'm rooted but on stock ATM. Please I need some suggestions for fixing this with tweaks or a better rom. Specs below.
SPH-D710
2.3.6
EL29
All I can suggest is try all the modems,at most I get 4 bars,4g cuts out alot for me
Sent from my SPH-D710 using XDA
Ignore the low signal stuff. Our phone is just really accurate. Nothing wrong with our radios. You'll still be fine if its low signal usually
Sent from my SPH-D710 using xda premium
locoboi187 said:
Ignore the low signal stuff. Our phone is just really accurate. Nothing wrong with our radios. You'll still be fine if its low signal usually
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
A lot of times when I am roaming or have really low bars I can't make or receive calls at all. I seem to remember having similar problems with a Samsung device on T-Mobile. Is the hardware side of Samsung's weaker than HTC? If it was just low signal but I could still use the device as a phone I wouldn't care, but it is just an expensive toy a decent portion of my day as it is right now.
Try clearing your nvram and reactivating.
Sent from my SPH-D710 using Tapatalk 2
Yeah I ignore my signal bar as well.. Even when it's low, my calls data sms are just fine.. But then again I'm in a area where sprint works great
- Sent From My Blu Kuban Themed Tapatalk Like A Boss
revamper said:
Try clearing your nvram and reactivating.
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
How do you clear your nvram?
Part of my point in all this is that I am in an area that has good Sprint coverage, the only difference between my usage is the phone. I was consistently on 4G with my Evo now I very rarely can connect or stay connected, I always had cell service on my Evo, now lots of dropped calls and static and unable to send/recieve texts unless under open sky.
dlpetey said:
I had the Evo 4g for about 1.5 years and it was a great phone. It started having problems so I decided to upgrade to the Samsung S2 on Sprint. Ever since I got it I have low signal most everywhere, can't connect to 4g unless I'm out under open sky, and my phone flips to roaming a lot. I have updated everything but still no fix. I'm rooted but on stock ATM. Please I need some suggestions for fixing this with tweaks or a better rom. Specs below.
SPH-D710
2.3.6
EL29
Click to expand...
Click to collapse
Your best bet might be to try a bunch of different modems. [modems here = radios on other devices like HTC]
You'll have to root and add CWM to flash them. Modems are build 'independant'. Meaing you could be on EL29 and use an FG20 modem if you'd like. By far the best reception (both 3g an 4g) has been on the FG20.
If you want to keep your phone on EL29 stock use sfhub's 'Autoroot' and add EL29+CWM-Rogue. http://forum.xda-developers.com/showthread.php?t=1342728
Hit up the 'Modem repository by rwilco12 http://forum.xda-developers.com/showthread.php?t=1662295
After each modem flash I suggest updating the PRL and Profile too.
Find one that gives you the best signal for your area.
There are also '3g/4g speed tweak' posts in this forum That will work on GB and ICS builds.
Good luck.
dlpetey said:
How do you clear your nvram?
Part of my point in all this is that I am in an area that has good Sprint coverage, the only difference between my usage is the phone. I was consistently on 4G with my Evo now I very rarely can connect or stay connected, I always had cell service on my Evo, now lots of dropped calls and static and unable to send/recieve texts unless under open sky.
Click to expand...
Click to collapse
You would think they would've mellowed this out of the all the phones by now, but you may be experiencing the infamous Loss of Service (LOS) issue this phone wrought when it was first released.
dlpetey said:
How do you clear your nvram?
Part of my point in all this is that I am in an area that has good Sprint coverage, the only difference between my usage is the phone. I was consistently on 4G with my Evo now I very rarely can connect or stay connected, I always had cell service on my Evo, now lots of dropped calls and static and unable to send/recieve texts unless under open sky.
Click to expand...
Click to collapse
You can either use odin or a dialer code + your MSL.
There are new PRL out and I get a better signal now and better 3g speeds. Update prl and profile first. Next try different modems, I like FE22
Thank you everyone. I just updated the PRL and Profile again. I'll see if that makes any difference and if not I will start running through the modems. If I find something that works I'll post back.

Best ROM for voice signal issues

My story begins when i got my new shiny D710 over a year ago. I loved the stock ROM that it came with (i wish i knew what version it was). Battery life was great! Signal was good inside my basement apt. i mean, i had 2 to 3+ voice bars and call quality was good in NYC.
updates kept coming through and then came the dreaded ICS update nightmare. every call was a dropped call or just no signal at all (stop sign). i gave the updates another month or two to see if anything got better, and it did not. i made a bold decision to wipe my entire phone completely and go back to GB EL29 stock, which came rooted. I was lucky enough to move into another decent apt. on an upper floor but STILL had really bad voice signal strength on EL29, 1 bar or no signal at all. it takes about 10 minutes for roaming to kick in, then it disappears after my call is completed. is it my phone or my ROM? Can anyone suggest a ROM that enhances the voice signal? it doesnt have to be GB, but i do enjoy it's battery life without having to install/tweak crazy battery saver apps. 4G data gets a full strength signal so i dont know what i am doing wrong.
My emergency flip phone from virgin mobile prepaid has full bars compared to this thing! both are CMDA!
I myself live in NYC and for me I was using Stock Rooted FL16. That gave me pretty decent battery life as well as pretty good signal. But battery life is different for everybody and every device. Hope that helps.. :thumbup:
Sent from my SPH-D710 using xda premium
Try different modems. There is a sticky in the development section.
funny how i am getting full bars inside my apt. while voice roaming. is sprint limiting my call capabilities on purpose? roaming on another carrier is a no brainer. it doesnt seem like the phone is the issue. i might just give FL16 a shot. is there no way to keep voice roaming ON all the time?
There's an app called "Roam Control" by MrGreg for rooted phones where you can force roam. "Not roam control" is in Google Play Store, you can get Roam Control at the developer's website
Sent from my SPH-D710 using xda premium
Try changing your prl. If concerned about battery life try a diff GB modem.
Pp.
sent from a jellybean filled epic touch.
someguyatx said:
Try different modems. There is a sticky in the development section.
Click to expand...
Click to collapse
I absolutely agree with this. It sounds like your problem started when you received an OTA update that changed your modem.
If you flashed a rom zip file, it did not change the modem. The modem must be flashed separately. Try flashing a GB modem.
If you want to use a GB rom, I suggest Caukulin's v3.0. Everything works perfect and the battery life is the best I have ever had on this phone.
I was never able to get a good signal at home. I can go about 1/4 mile in any direction and get a good signal. I got tired of dropping nearly every call so I solved the problem by using a custom prl that uses Verizon's towers. Haven't had a dropped call since.
Sent from my SPH-D710 using Xparent Cyan Tapatalk 2
jaxon01 said:
I absolutely agree with this. It sounds like your problem started when you received an OTA update that changed your modem.
If you flashed a rom zip file, it did not change the modem. The modem must be flashed separately. Try flashing a GB modem.
If you want to use a GB rom, I suggest Caukulin's v3.0. Everything works perfect and the battery life is the best I have ever had on this phone.
I was never able to get a good signal at home. I can go about 1/4 mile in any direction and get a good signal. I got tired of dropping nearly every call so I solved the problem by using a custom prl that uses Verizon's towers. Haven't had a dropped call since.
Sent from my SPH-D710 using Xparent Cyan Tapatalk 2
Click to expand...
Click to collapse
Thank you so much! I didnt realize that the modem would have not changed! You are awesome!!! If I use a custom prl, would that mean that my data is also roaming or just the voice?
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[Q] Get reception as good as my donor phone

I've flashed my epic 4g to boost mobile and I'm running CM10.0, one of the older nightly builds. After I smashed my screen I fired up my donor phone and it's been getting decent reception in my house, and I remember it doing the same before I switched to the epic (which I've been dealing with it only working in one corner of the house for a long time). Now that I've replaced the screen I miss the good reception that I'm used to now haha. My donor phone is the sanyo incognito, does anyone know if there is a way to get the same reception as my donor? I've flashed the latest PRL's, but haven't tried any other modems. I use linux and not sure I want to give odin another shot, heimdall has worked pretty good so far for flashing new recovery but odin gave me a lot of trouble and I ended up using heimdall to fix it. Any pointers? Maybe just try random modems? I really need better reception.. or maybe switch to metro? Thanks guys love the work being done here and all the good info.
First off, questions go in Q&A.
Second, the epics radio sucks. Try some of the other modems out and see how they work for you. Might be better, but they could also be worse.
Sent from my SPH-L720 using Tapatalk 2
Thread moved
Friendly Neighborhood Moderator
A lot of people (myself included) stopped using the Epic's radios/modems and started using the radios/modems from the Nexus S 4G. Most of us have had far better signal strength with them.
Sent from my SPH-D700 using Tapatalk 2

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