Question about T-Mobile Sidekick II

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Sidekick Hi, i just bought a sidekick used, how do i change the sim card to get started ?

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Re: sidekick

The SIM card slot on a Sidekick II is located on the top left corner of the device, under the rubber "bumper". The support section of T-Mobile's website has a diagram showing how to insert the SIM in a Sidekick 2.

Posted on Dec 06, 2007

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My sidekick slide cant read my new sim..........i need help...when ever i try am stuck at the sim center.

Hi, First request the phone's IMEI code by contacting customer service for T-Mobile. If you've been a customer long enough, T-Mobile may send the IMEI code, or the code identifying the specific phone, in a few days.Turn off the Sidekick Slide. Remove T-Mobile's SIM card, which is located near the battery. Insert the new provider's SIM card.Turn the Sidekick Slide back on. The phone will detect the new code and ask for the IMEI code. Enter the code. Now the Sidekick will operate using the new network.
Thank you

Jan 03, 2011 | T-Mobile Sidekick

1 Answer

How do You unlock a sidekick 08?

Your Sidekick operates on a GSM cellular network. Your Boost SIM card (and Boost Mobile phones) operate on an iDEN cellular system. You cannot use a Boost SIM card in a Sidekick. (FYI - SIM cards cannot be unlocked. Only cellphones phones can be unlocked.)

Jan 07, 2010 | T-Mobile Sidekick II

1 Answer

Different sim card into a sidekick

if you are using the same carrier you can, just change the sim card to the sidekick and you should be fine.

Jul 08, 2009 | Sharp Sidekick LX Smartphone

2 Answers


I just got a sidekick off the internet and I put my SIM card in the phone and it says no SIM card. What do I do? Anyway to fix whatever is wrong?

May 30, 2009 | Sharp Sidekick LX Smartphone

1 Answer

I need T-mobile sidekick ...& i am from India...

does your country have a tmobile network or tmobile store around there? if no, then it wont do any good for you to use it if there dont have any tmobile network to work with.
sorry to tell you that.
but, you can try to get a unlocked sidekick and use a(whichever carriers you have in india) sim card and insert in a sidekick. but, you will only be able to use a sidekick are make a phone calls and send & receive a text and thats it. nothing else. 
hope that answered your question.

Mar 06, 2009 | T-Mobile Sidekick II

1 Answer

Phone request me to enter the sim code when i used Cambodia's SIM

not sure if this works with the 2008 but its something you can try, i put a sim card in my LX and was asking for a special code to unlock the phone, well right now tmobile isn't unlocking the sidekick, but you can trick the phone into using the sim card. First go to your settings, go to "SIM Center" and click on disable sim lock, enter in whatever your sim password is (if you dont know your sim password get your PUK (pin unblocking key) number which customer service will give you if you call 611, you can change that SIM pin by typing **05*PUKnumber*newpin*newpin#) now if you wanted to change it to "0123" if your puk was 9483992 its 7-9 digits you would type **05*9483992*0123*0123# now your sim pin is 0123. (trying not to make this super complicated) it will say sim pin not accepted click ok, now click change sim pin you can type the same sim pin 3 times if you want, 0123 0123 0123 now at the top of the screen bars will show up with a white phone beside it, go to Settings-Network Options-Scan and Select Manually, the SIM network should come up, click ok when it finds it and it will connect, now you can call and text on whatever sim you have in the phone

Mar 04, 2009 | T-Mobile Sidekick

1 Answer

Sidekick don't get any signal only at one time at the day.

Yes I have a friend that works for T Mobile and he is at my work right now and that is what he told me so I know that it is the sim card. Even though it works in other phones the config is bad for your phone

Feb 07, 2009 | T-Mobile Sidekick II

1 Answer

T-Mobile Sidekick ID Unlock

1.your sim needs a password 
2.turn off ur sidekick 3 ur cingular card in 
4.turn on sidekick 3
5.itz gunna ask you for a special code ignore it
6. go to settings den sim center 
7. if ur sim lock is disabled jus enable it 
8.den change ur sin pin to wateva you want
9.once u change it you will signals bars go up
10.go 2 settings network options 
11. press scan scan select manually 
12. select ur network 
13. and datz it your sim iz workin on sidekick 3

if u turn it off u will have 2 do da same process again

Nov 09, 2008 | T-Mobile Sidekick

16 Answers

How to unlock special SIM code on Sidekick LX (T-Mobile) from USA

works for sk 3, slide and lx.
the video says only at&t in the U.S. but... i've seen it work for fones in europe.
try it.

May 24, 2008 | T-Mobile Sidekick

1 Answer

Sim card

Yes you can, But you will have to get an unlock code to unlock the sidekick so you can use the sim card.


Feb 26, 2008 | T-Mobile Sidekick II

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