First, you would need to unlock the Sidekick. And make sure that the SIM card you're using is GSM-based. Now, once the Sidekick is unlocked, then you can use the phone for calling and texting only. You may not be able to use the data on your phone even if you register the phone for a data plan. Sidekick phones have special data plans that only T Mobile can support.
is needed
i dont think you can... other then put the sim card into the new sidekick....
1111
globalunlock.com
Yeah i think you can use the same sim card i haven't tried that yet but it should work the same. And you can use the same sim card on different pones and it will work the same.
A simple reset will cure whatever ails your Sidekick. To start, remove the battery and SIM card from your Sidekick. From there, flip the Sidekick open and hold the "R" key, then put the battery back in the Sidekick. Do not, however, insert the SIM card yet. At this point, the Sidekick should restart itself. Make sure not to let go of the "R" key until your Sidekick has restarted completely. Once your Sidekick has fully restarted, remove the battery, then re-insert it--along with the SIM card--and turn on your Sidekick. This should restore all your factory settings.
A simple reset will cure whatever ails your Sidekick. To start, remove the battery and SIM card from your Sidekick. From there, flip the Sidekick open and hold the "R" key, then put the battery back in the Sidekick. Do not, however, insert the SIM card yet. At this point, the Sidekick should restart itself. Make sure not to let go of the "R" key until your Sidekick has restarted completely. Once your Sidekick has fully restarted, remove the battery, then re-insert it--along with the SIM card--and turn on your Sidekick. This should restore all your factory settings.
A simple reset will cure whatever ails your Sidekick. To start, remove the battery and SIM card from your Sidekick. From there, flip the Sidekick open and hold the "R" key, then put the battery back in the Sidekick. Do not, however, insert the SIM card yet. At this point, the Sidekick should restart itself. Make sure not to let go of the "R" key until your Sidekick has restarted completely. Once your Sidekick has fully restarted, remove the battery, then re-insert it--along with the SIM card--and turn on your Sidekick. This should restore all your factory settings.
Any cell phone that is unlocked requires a SIM card to work. If you own a Sidekick cell phone that is unlocked you are able to use a carrier other than T-Mobile. For this reason, it will require a SIM card to work.
it should because all sim cards are the same (well within your compny like tmobile sprint and others).
Yes you can. You can put any tmobile sim card into any tmobile or unlocked phone and it will work perfectly. Although you may need to add some features to your plan :)
Remove plastic cover with T-Mobile Logo from left side of unit to reveal sim card location.