My iPhone won't hold a charge and loses charge even when it's plugged in.

Lock System Does Not Lock
Step
Action
Yes
No
DEFINITION: The lock system will not allow the key to be turned to the OFF lock position.
1
Did you review the Steering Wheel and Column - Tilt Description and Operation and perform the necessary inspections?
Go to Step 2
Go to Symptoms - Steering Wheel and Column - Tilt
2
Verify that the lock system does not lock.
Does the lock system operate normally?
System OK
NO - Go to Step 3
3
Inspect for a faulty lock cylinder or release button.
Is the lock cylinder or release button damaged?
Go to Step 6
Go to Step 4
4
Inspect the shift linkage adjustment.
Is the shift linkage adjusted incorrectly?
Go to Step 7
Go to Step 5
5
Inspect the ignition switch for damage.
Is the ignition switch damaged?
Go to Step 8
Go to Step 6
6
Replace the lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .
Did you complete the repair?
Go to Step 10
--
7
Adjust the shift linkage.
Did you complete the repair?
Go to Step 10
--
8
Replace the ignition switch. Refer to Ignition Switch Replacement - On Vehicle .
Did you complete the repair?
Go to Step 10
--
10
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 3

If the recharageable battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% and graduallythe charge reduces until the battery won't charge up at all. OR The batteryshows a 100% charge but when the adapter is disconnected the battery drops offto zero capacity in a very short time. If the battery drops to an unacceptablecharge level then the battery needs to be replaced.

You might try holding down the power and home buttons at the same time. Wait until you see the silver apple. Thats what I did when mine wouldn't turn back on.there is an easier way instead of just guessing....
when you plug it into any form of charging source...just completely shut down your iphone...and leave it there for how ever long it takes to charge...(to be able to use it again is about 30 minutes)depends on your energy sourceFirst open iTunes and Conect your iPhone cord to your computer, but do not plug it into your iPhone. Then press and hold the home button on your phone while conecting the iPhone cord into your iPhone continue to hold down the home button. Then click restore in iTunes

Try plugging it into a wall charger, and make sure you are using a genuine apple cable and wall plug.

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.
   
   Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:
   
   If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.

You will lose all your data though...

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.
   
   Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:
   
   If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.

You will lose all your data though...

if it is disabled then restoring is the only option i guess..

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.
   
   Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:
   
   If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.

You will lose all your data though...

Try restoring it...here's how...

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.
   
   Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:
   
   If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.

But you will lose all your data.

Try restoring it...here's how...

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Power off the device (Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
3. Press and hold the Home button while reconnecting the USB cable to iPhone. When you reconnect the USB to iPhone, the device should then power on.
   
   Note: If you see the message "Charging... Please Wait" , let the device charge for at least 10 minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button while iPhone starts up. While starting up, you will see the Apple logo.
5. When you see "Connect to iTunes" on the screen, you can release the Home button andiTuneswill display the recovery mode message:
   
   If you don't see the "Connect to iTunes" screen, then disconnect the USB cable from iPhone and repeat steps 3-6.

But you will lose all your data

It's not booting up. hook it to the computer and see if iTunes sees it when you bring it up holding home and power for 6 secs. then releasing power and hold home longer. Restore it when itunes sees it and it should work again.