Battery runs down before my eyes, locks up in ''dead battery'' screen mode (full size red battery screen). Multiple hard and soft resets do not solve the problem. Comes back to life for minutes at a time and then goes dead quickly. It is jailbroken but worked for months that way. I really don't want a new one because I have the future proof jailbroken version. Any ideas?
SOURCE: GPS not working
Try this -
1) Settings > Enable 3G Change to Off.
2) Use the iPhone GPS receiver to locate your position
3) Settings > Enable 3G change to On.
There are two positioning systems in the iPhone 3G, one is the 3G network, and the second is the GPS receiver. The problem occurs when the data from the two systems doesn't match.
SOURCE: 2.2 Jailbroken iPhone 3G dailer crashes! Help!
If after the jailbreak you can't make dial calls because the phone dialer freezes and goes back to the main menu, try this:
1- Uninstall Kate from Installer: this is what everyone recommends, seems to work for a lot of people but didn't work for me.
2- Then go to Installer again and uninstall these apps:
A) Mobile enhancer
B) RIP DEV preferences
3- Reboot your iPhone.
That's what I did and got my dial pad back again.
SOURCE: How to recover Restriction Passcode - iPhone 3g 2.2.1 jailbroken
ok! I figured it out... What I did was, I simply restored the phone with the backup taken from another phone with the same name and now my Restriction Code is blank (as it was blank in the other phone)
SOURCE: frozen jailbroken iphone 3g
Try to reset the phone:
Download the latest iTunes to your computer and reset the iPhone. Then re-sync it.
Reset
To reset iPhone, press and hold the Sleep/Wake button and the Home button at the same time for at least 10 seconds. During this time, a red "power off" slider may appear and the screen may go black, but do not release Sleep/Wake and Home buttons until the Apple logo appears.
If iPhone won't turn on, or the display freezes or doesn't respond
More resets:
Try This:
1. Remove Sim Card
2. Hold in 'Home' button and 'On/Off' button together until Apple logo appears
3. Replace Sim Card
4. Hold in 'Home' button and 'On/Off' button together until normal phone screen appears.
Also, Try this:
1.) Shut down the iPhone 3G.
2.) Start up iTunes
3.) Hold down HOME button on the iPhone 3G
4.) While keeping the HOME button depressed, plug in the Sync cable
5.) A message will pop up to ask if you want to reset.
6.) Just click YES and the reset process should start.
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309
SOURCE: jailbroken iphone 3g frozen screen
samevthing happened to me your gonna have to plugg your iphone into the comupter and hold the power and home button down at the same time until it shuts off. Keep holding the buttons down until it powers back on. there should be a picture of a guy wearing holding his hands up in the air on your iphone and itunes should open up on your computer. Now you will have to restore your phone.
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