12/7: Sprint has finally released via OTA EK02 which should hopefully fix the LOS issues. Samsung also released the kernel source today - and from the looks of it, they also fixed a bunch of other issues Sprint won't admit to (or maybe they didn't know about....).
9/29: Shane_M has responded from Sprint with this message:
"The loss of signal issue is an official known issue, Sprint and Samsung are aware of this issue and it will be addressed in a maintenence release. This information is posted on our known issues board and should be accessible by any care or technical support representative you speak with."
This is a growing problem - did a quick search and didn't find anything in here....
The issue is the phone will go into "No Signal" mode randomly and the only way to get out of it is to reboot the phone. Happens when in sleep mode; with and without wifi on; standing on your head; kissing your wife. Here are the messages spouted in Logcat when it happens:
Anyone see a problem here? SIM_STATE_CHANGED? radioTurnedOff?
I can confirm this also, it has happend anywhere from 1 - 4 times a day. There have also been times when the icons do not change to LOS simply data is gone but 3G and vars remain on screen. If I toggle airplane mode in that situation LOS icons appear after the toggle.
If I toggle Airplane mode or 3G data during LOS nothing comes back, the only way to get service back is a reboot.
I also did a logcat -b radio after the LOS happened. Here is where you can get it
It looks to be a problem with RIL, no service makes me a sad panda
I just had this again on my device and I used DDMS to dump the device state. Enjoy Sprint/Samsung.
http://dl.dropbox.com/u/549521/device-state.txt (zip file included here)
NOTE: you can't use Notepad to view, you need something like Notepad ++ due to Unix CR/LF.....
We've got a few reports of people experiencing this and we're looking into it, further information is definitely needed, if you're willing to help run some specific logs and test for this issue please send me a private message and in the subject line put Epic Touch LoS issue and I will send you the instructions for providing additional information.
I have been having similar issues. Multiple times a day I am losing signal and getting roaming notifications and my data speeds when I am connected are horrible. My service in this area was ok with me evo 4g last week but since I got the SGSII it is almost unusable. I am in 32955. If you have any information that could help I would really appreciate it.
I am experiencing this same issue as well. The only way I have found to re-establish signal is to re-start the phone. My Touch Pro2 did not experience this issues in the same exact location (desk at work). The phone is awesome, but this issue is getting extremely frustrating.
This is something I posted on XDA so I'm pasting it here. The first part was written this afternoon and the EDITS were done about an hour ago
So I have had LOS a few times since I got my phone. Just a few minutes ago I got LOS after a phone call and it remained that way. AbsolutZeroGI on IRC wanted me to try something whlile I had LOS before I rebooted. I went into the task manager, selected the ram tab and then pressed the clear button. That didnt bring service back but after I did that I did get the roaming notification(but still had LOS) so I plugged my phone into my PC(not to try to fix it but to boot into recovery) and then I noticed my signal came back without a reboot as soon as I plugged in the cable. Now I'm not really sure if/why plugging in the USB would correct this or if it was just a coincidence or if it fixed it. Although I know the other times I had LOS it didnt come back until a reboot no matter how long I waited.. So I would like to run a test..
The next time you get LOS go into the taskmanager, select the ram tab and then click clear, then plug your phone into your PC(Edit: While your screen is off)
. Did your signal come back or do you still have LOS?
I just got home, was sending a few text messages had a signal, put my phone down, came back and turned on the screen and I had no service. So I came back to my PC to test this out again. When I came back to the PC I had a PM from AbsolutZeroGI. He told me he just got the LOS and the steps didnt work. And so far I've been the only one to get it to come back without a reboot. So I tried again.. I plugged it in and unplugged it multiple times... nothing.. still no service, I tried to remember the exact steps I did the first time and I thought "when I plugged it in and it worked was my screen on or off" So I tried one more time. I turned the screen off, waited a few minutes, had the usb cable plugged into the pc then plugged in the phone. I waited a few more seconds, turned the screen on and boom, I had almost all the bars but no 3G icon and a few seconds later the 3g icon came back on.
So here is my theory: When the screen goes off maybe there is a bug in the sleep process that somehow causes the LOS. When you wake it, whatever it is that disabled it, doesnt re-enable it so it "thinks" it's still sleeping, until it's back in sleep mode and something like plugging in the usb wakes it for usb debugging. So I think it somehow goes into a deep sleep and doesnt fully wake up when the screen goes on, but something like plugging it in fires another separate process that does fully wake it.