My sidekick 3 wont go past BATTERY LOW! PLEASE ALLOW DEVICE TO ..

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

same thing with my phone and ti was wrorking perfectly fine before this happened

HOW TO DO A MASTER RESET ON A SIDEKICK 3 NOTE: Performing this will restore your device back to factory defaults, meaning you'll loose everything on your sidekick!
1. Remove the battery and the SIM card from the device. 2. Flip the sidekick open; press and hold the letter 'r' on the keypad. 3. While holding the letter 'r', place the battery back in the device. DO NOT INSERT THE SIM CARD YET. 4. The sidekick will restart itself twice. Please make sure not to let the letter 'r' go until it has fully rebooted. 5. Once it has fully rebooted, remove the battery, re-insert the SIM card and battery and power up the device. 6. Once the device has fully rebooted, all prior information should be erased from the device and it should be restored back to the default factory settings.

Try this, though is used for when the device is randomly rebooting aswell, it might help you to force your Sidekick to come back on:

1. Check the device's battery level for at least two bars of strength.
2. If the battery level is low, charge the battery.
3. If the issue is not resolved, remove the back cover.
4. Remove the battery.
5. Wait 10 seconds.
6. Press and hold the W key.
7. While pressing down the W key, re-insert the battery.
   • The device restarts and after approximately 15 seconds, the 'Recovery' screen appears.
     
     
     
     
8. Select the desired language.
9. Select Reboot to restart the device.
10. Your Sidekick should go back to the main screen as normal. Good luck

Here is your solution: 
Now follow these steps to a "T" don't do any shortcuts etc, this is "across the board" for all sidekicks it worked on my Sidekick Slide and on my Sidekick 2008.

1. Remove battery and the SIM card from the devise.
2. Flip the sidekick open; press and hold the letter "r" on the keypad
3. While holding the letter "r", place the battery back in the device. DO NOT INSERT SIM CARD YET.
4. The Sidekick will restart itself twice. Please make sure not to let the letter "r" go until it has fully rebooted.
5. Once it has fully rebooted, remove the battery, reinstall the SIM card and battery.
6. Power up device.
7. Once the device has fully rebooted, all prior information should be erased from the device and it should be restored back to the default factory setting.

**** on it.

when my sidekick 3 turns on it shows a screen that says " SYSTEM CRASH @10007F54" can anyone help me?

Change the flex cable the flex cable is the silver thing you see when you fold the screen half way

well i suggest you take it back to the shop where you got it from they will most likely send it off to the specialists free of charge , because it is a technical problem .

The most likely reason of this problem is maybe your putting the charger in to hard and its pushing it back so its not alowing it to charge? It is quite a bad phone in that aspect