Discuss [sleep mode] no incoming call at the General - Hackint0sh.org; answering my own question. Replacing the coms board solved the problem.
As well as fixing ...
answering my own question. Replacing the coms board solved the problem.
As well as fixing my wifi.
Only problem is now I have a 1601 error. lol.
Hey, I been trying all these things.. But only changing the com.apple.SystemPowerProfileDefaults.plist file works for me..
I am testing a new posibility to fix this issue, REMOVING "com.apple.CommCenter" and restarting the phone.
If you have WinSCP or Putty, SSH into the iPhone and input this line:
"launchctl remove com.apple.CommCenter"
Almost immediately, the phone lose all signal, and must say "SEARCHING...", maybe WIFI will turn off too..
Restart the phone pressing the HOME BUTTON and the SLEEP BUTTON together untill the Apple logo appears.. Release the buttons...
Apparently. this is working for me... No signal loss below 60% Battery.. And now i've full signal bar and less than 20% battery..
Sorry about my bad english, i'm from Argentina.. =S
Last edited by nicochory; 03-11-2009 at 06:47 PM.
I am having this issue as well. I tried the method of changing the name on the plist file and it seemed to work for about 5 days, then the phone starting missing calls, texts etc... I noticed if I called the phone while it was on standby, nothing happened but if I hit the home key the phone would start to ring and show the number I was calling it from.
I have re-flashed / jailbroken / unlocked the iPhone again today and had to edit the file again. It seems to be working for now, but I don't have high hopes that it will last.
Does anyone out there have any other thoughts on a fix for this issue? It is driving me and those who call me nuts!
Hey please help me i am having an unlocked iPhone 2g and the firmware is 2.2.1 which i upgraded recently from 1.1.4.
but the problem which i used to face that the phone gets switched off randomly is still taking place. Its totally random. i have restored my phone twice for this and even upgraded it to 2.2.1 from 1.1.4 but still it continues. It turns off randomly evn while i am using it or even when i m not using, YES it does anytime. Even while i am speaking on the phone or using some application.
If i connect it to charger or itunes it starts working fine.
i m new to this forum ...
i m worried..
Please help asap.
I'm pretty sure it's something to do with the software and particularly this file. Is there anyone here with a fresh, correctly working iphone who could post their copy of this file?
Removing it causes the phone to work as it should except it eats through the battery in a day (if not used for calls, that is)...
Oh, and did this problem somehow magically disappear recently? I'm not finding many posts about it more recent than around the beginning of april....
I realize this is going to sound crazy, but after attempting everything else (I mean everything), I tried two things today, which together, or the latter by itself, seems to have fixed my iPhone original 2G, at least for now. Or at least shed some light on the problem. The sleep mode/no incoming call problem began after I upgraded to firmware 3.0.
Here's what I did:
1. I charged the battery to capacity, drained drained it down to zero, then recharged it to capacity again. Here's why:
"Use iPhone Regularly
For proper maintenance of a lithium-based battery, it's important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down)."
Apple - Batteries - iPhone
#1, at least by itself, didn't fix the problem. So...
2. Later in the day, I placed my iPhone in the refrigerator (yes, really) for about 30 minutes. I placed it in a plastic bag, first, so when I took it out it wouldn't get wet from condensation.
Incredibly, my phone now wakes from standby when there's an incoming call/SMS - just like it's supposed to.
So I'm beginning to wonder whether this might be a battery related issue, that is, the battery's calibration/power management somehow got scrambled (for me, with the 3.0 firmware upgrade) not allowing the phone to power on/wake from standby. At least in my situation, I was always able to get incoming calls when the phone was being charged (is this because the phone doesn't enter standby, as some have described, or is it because there's simply enough juice to wake the damn thing up since it's plugged in)?
One thing I noticed when the phone wouldn't wake from standby is that, while in standby, there seemed to be no signal. When I manually turned on the phone, the signal would always be low to nonexistent, the clock (set to automatic) would try to adjust once it reconnected with my provider's servers, and any missed calls would get time-stamped with the time I turned on the phone (not when the calls were actually received).
Here is my previous list of symptoms. Of course, I'm not holding my breath that they won't return:
1. The iPhone cannot receive incoming calls once it enters standby for over a minute or two
2. Once the phone enters standby, it will neither ring nor vibrate
3. If I press the home button after the incoming call has ended, there will be a missed call notification, stamped with the time I pressed the home button (not when the call came in). Also, once the phone emerges from standby, queued voicemails and texts roll in, often from hours prior.
4. If I press the home button while the incoming call is ringing (on the caller's side), the iPhone will ring and vibrate immediately, no problem
5. Before the phone enters standby, there is no problem receiving incoming calls - the iPhone rings and vibrates just fine
6. When the phone is being charged, there is no problem receiving incoming calls - the iPhone rings and vibrates just fine
Anyway, I hope this helps someone.
@coram nobis: thanks a million times, this is the only way it works. Yes I'm crazy enough to put my phone in the fridge, and it works. It's coming back after I installed Yahoo! Messenger and Facebook, but when I remove them it's gone completely. Thanks so much. I myself tried a lot of other methods before (turn off push, restore, etc).
so glad it works now.
OK, I have the fix for this, finally. This also fixes the problem of losing WiFi capability.
Using iTunes, restore your iPhone firmware. When this is complete you are asked if you want to restore settings from a backup, or set up as a new iPhone, DO NOT restore from backup. Choose to set up as a new iPhone. When the restore is complete, you will find that your phone awakes from sleep to alert you to new incoming calls and texts, and also restore your WiFi capabilities.
By doing this you will lose your settings, text message and phone call history, so make sure you have written down anything you don't want to lose. You will not lose your contacts, music, calendar info etc., as that will be restored when you next synch your iPhone with iTunes.
I have tested nicochory's method ("launchctl remove com.apple.CommCenter") without success.
And yes the fridge method works but it's only temporary.
The only thing that works for me is renaming "com.apple.SystemPowerProfileDefaults.plist" but with the problem of the battery drain.
If someone has a custom com.apple.SystemPowerProfileDefaults.plist that works or the parameter in that file that could solve our problems please post.
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