Question about T-Mobile Sidekick® 3 Cellular Phone

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Sidekick 3 crsashes

My sidekick when is on it says system crash early device not supported what can i do to make it work?

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Re: sidekick 3 crsashes

The same thing happened to mine, so far what i do is do the hard reboot:
take the battery out, hold down w, while still holding the w put the battery back in. then scroll to reboot.

may take a few tries....
also this is an annoying and very temporary fix...get a new phone.

Posted on Mar 03, 2008

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Sidekick 3: System crash and big X, won't start up

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.

Feb 06, 2009 | T-Mobile Sidekick® 3 Cellular Phone

1 Answer

Sidekick id big red x

check t-mobile support for firmware update.

If you can't get one from tmobile support you will most likely have to send this one in for service.

Jun 28, 2008 | T-Mobile Sidekick ID Cellular Phone


Device randomly reboots - T-Mobile Sidekick® II (all styles) / Sidekick® 3 (all...

Device randomly reboots - T-Mobile Sidekick® II (all styles) / Sidekick® 3 (all styles) / Sidekick iD
  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.

on Dec 09, 2008 | T-Mobile Sidekick® 3 Cellular Phone

2 Answers

Sidekick 3

Contact Nokia tech support and they can help you with the unlock procedure since they can get you the codes you need to unlock it.

Oct 15, 2008 | T-Mobile Sidekick® 3 Cellular Phone

2 Answers

Sidekick 2008

ok u dont have to get a code on the 3 digit mian screen press menue and circle the press menue shits q then its ganna say delte evry thing press yes and ur promblems solve i had the same promblem

Sep 29, 2008 | T-Mobile Sidekick® 3 Cellular Phone

2 Answers

Sidekick 3

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

Jul 05, 2008 | T-Mobile Sidekick® 3 Cellular Phone

1 Answer


Firmware crashed. T-mobile needs to reload the OS into your device. Its "blank" or corrupt. Only way to bring the device back is to flash it

Jan 25, 2008 | T-Mobile Sidekick® 3 Cellular Phone

4 Answers

Sidekick 3

Emulating a Hard Reset
The Sidekick 3 now will commit memory-resident DataStores to flash memory when the device is powered down or rebooted normally. This greatly reduces the incidence of "hard reset" resyncing of the device which enhances user experience, however it makes it more difficult for developers to test this functionality on the device. You can simulate a hard reset on the device two ways: 1) Yank the battery out of the device without shutting it down. This will force a hard reset of the device, but it's not recommended as this can also potentially corrupt files on the miniSD card if they're being written when this happens. 2) (recommended) Follow the steps below to clear the datastores off and simulate a hard reset:
- Reboot the device by pressing @+1+0
- IMMEDIATELY press and hold the 'R' key on the keyboard. Continue to hold the 'R' key down
- The device will reboot, and when the initial boot screen (the 4 face buttons animation shows) displays, the screen will clear and the device will reboot again.
- Let go of the 'R' key at this point, and the device will reboot with no datastores, and force a resync.

Jan 20, 2008 | T-Mobile Sidekick® 3 Cellular Phone

1 Answer

Sidekick 3 has big red X on screen

You can try hard reset to see if that will clear it. With the unit powered on, pull the battery out.

Jan 13, 2008 | T-Mobile Sidekick® 3 Cellular Phone

2 Answers

Sidekick 3

Want to clear out info on your Sidekick info (ie: to sell yours)?

1) Remove your sim card
2) From the jump screen: Menu -> Settings -> System Info
3) Press Menu+Shift+X Select OK to clear the flash.
4) Press Menu+Shift+R Select OK to clear the login information.
5) Perform a hard reset now. This will reboot the device.
To perform a hard reset:

SK2 - Press the power button and reset button at the same time. Unit will vibrate when reset. You can use a paper clip or similiar to hit the reset button located behind the screen.

SK3 - remove the battery while the device is on.

6) Call your carrier and ask them to detach your device IMEI from the username locked in. Once that is done, hard reset without your SIM card inserted.

You're done.

Jan 02, 2008 | T-Mobile Sidekick® 3 Cellular Phone

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