1. samantha's Avatar
    My friend asked me to fix his iPhone which is constantly loosing signal of the provider. Usually it shows full signal and then it dissapears and it says "No service". And after a few seconds it will show full signal again. He is runnig 1.0.2 firmware. It does that with SIM cards of different providers, we tried T-Mobile, Vodafone and O2. I tried to restore the phone, didnīt help, so I reflashed the baseband and also with no succes. Wi-fi and everything else works fine...
    Any idea what to do with this?

    Thanks, samantha
    2007-11-15 06:52 PM
  2. fat x nub's Avatar
    hmmmm....wat did u unlock with?
    2007-11-15 09:17 PM
  3. samantha's Avatar
    First he unlocked ut thru iBrickr or whatever Windows stuff is and then after he gave it to me and I restored it - I actevated it with iNdependence and unlocked it with iUnlock...
    2007-11-16 08:51 AM
  4. toyvan's Avatar
    In my experience the dreaded 'NO SERVICE' signal is a common problem to all iPhones, not just modded ones. Before I even hacked into mine I was having the same issue as I am now..a new sim card might solve it, but for now I just think it is a network problem...cheers!
    2007-11-16 09:01 AM
  5. italianapple's Avatar
    I'm having the same problem.. I bought a 1.1.1 iphone from the apple store took it home act and unlocked through jailbreakme.com and anysim 1.1 and the phone worked beautifully for 3 days then last night the signal started dropping from 5 to 1 to 4 bars to no service. it just keeps doing this over and over. any solutions to fix this. please help 'm losing my mind.

    thanks

    bump
    anyone?
    Last edited by italianapple; 2007-11-17 at 06:36 PM. Reason: Automerged Doublepost
    2007-11-17 06:36 PM
  6. pleyah69bjay's Avatar
    when i was on 1.0.2 id never see no service logo til upgraded to 1.1.1 somtyms full service al of a sudden no service frm my experience i dnt think its frm jailbreaking or unlockin my bros phone is not jailbreak or unlock and it does the same i gues its phone itself.
    2007-11-17 06:44 PM
  7. theone77's Avatar
    can anyone share the cause and solution of this problem? my wife accidentally use the anysim1.1.1 in my 1.0.2firmware. So i lose my signal then i tried to install and use anysim1.0.2 and now it works. but normally my phone will loose a signal in the middle of my conversation. No service and my call ends. Then it will be like that in most of my call. LOSSING SIGNAL

    dead thread
    Last edited by theone77; 2007-11-20 at 01:23 PM. Reason: Automerged Doublepost
    2007-11-20 01:23 PM
  8. italianapple's Avatar
    I hear you I'm having the same issue but no one seems to know whats going on.
    2007-11-21 06:26 AM
  9. samantha's Avatar
    Seems most of the people having problems with this are on 1.1.1. But my friendīs phone is 1.0.2 and it does the same... But what Iīve read so far, some people didnīt see it until they upgraded to 1.1.1. I am going to unlock some brand new 1.1.1 phones but I am thinking about downgrading them to 1.0.2 which seems more "stable".. .
    Btw - do you guys have experince with anySIM 1.1? I used the old version twice on 1.0.2 and never worked.. It said "Unlock succesful", but SIM still didnīt work. Now Iīve read that some people have the same problem with 1.1 version. Donīt you know how to make it work? SIM without PIN, chmod to 775.. I tried both and didnīt work.. anything else?
    2007-11-21 05:17 PM
  10. abhishekkhurana's Avatar
    I read some where to select Settings->General->Reset->Reset All Settings. Maybe that helps? For now, I'm sticking to my modded unlocked 1.0.2. Dreading "No Service" if I virginise and upgrade
    2007-11-21 05:57 PM
  11. gamezz's Avatar
    try john tool app by erica sadun..google it
    2007-11-22 08:10 AM
  12. samantha's Avatar
    I tried it already. Didn´t help and after I run it I lost all icons and I could´t use phone at all. Had to restore it again...
    2007-11-22 04:47 PM
  13. cc5ak's Avatar
    I have had this problem for weeks, and finally worked out what is causing it. It's the Iphone's power management settings, and kicks in every few minutes of non activity.

    What I did was SSH to /System/Library/SystemConfiguration/PowerManagement.bundle and renamed the 2 files to this:

    'com.apple.SystemPowerProfileDefaults.plist2'

    'PowerManagement1'

    Rebooted the phone, and it everything working perfectly. No more loss of signal etc. Battery life doesn't seem to be affected that badly.

    I am using firmware 1.1.2 , unlocked with IPSF.
    Last edited by cc5ak; 2007-11-22 at 06:37 PM.
    2007-11-22 06:34 PM
  14. theone77's Avatar
    I have had this problem for weeks, and finally worked out what is causing it. It's the Iphone's power management settings, and kicks in every few minutes of non activity.

    What I did was SSH to /System/Library/SystemConfiguration/PowerManagement.bundle and renamed the 2 files to this:

    'com.apple.SystemPowerProfileDefaults.plist2'

    'PowerManagement1'

    Rebooted the phone, and it everything working perfectly. No more loss of signal etc. Battery life doesn't seem to be affected that badly.

    I am using firmware 1.1.2 , unlocked with IPSF.

    can anyone confirm this to be safe? working?
    2007-11-22 07:06 PM
  15. samantha's Avatar
    Unfortunately doesnīt work for me
    2007-11-22 11:04 PM
  16. frank1123's Avatar
    Any updates on this? I too am experience this problem and I tried JohnTool and it didn't help
    2007-11-26 08:03 AM
  17. somebodyhere's Avatar
    is this happening only when inside a building?
    2007-11-26 08:33 AM
  18. frank1123's Avatar
    this is happening inside and out. Seems like theres only a handful of people with this problem so I'll try my luck and exchanging my phone for another one, hopefully they'll have more 1.1.1 fw's in stock somewhere...
    2007-11-26 03:09 PM
  19. frank1123's Avatar
    ..double post
    Last edited by frank1123; 2008-01-25 at 03:18 PM.
    2007-11-26 03:11 PM
  20. cc5ak's Avatar
    can anyone confirm this to be safe? working?
    I've made the same changes to the 2 files on 3 other iPhones running firmware 1.1.1 and 1.1.2 and it worked on all of them. You can verify this is working by going into the Settings, Usage and your usage time and standby time should be the same regardless.

    Also went as fas as deleting the 2 files and still works.
    2007-12-07 04:40 PM
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