20 Most Recent T-Mobile Sidekick® 3 Cellular Phone Questions & Answers

go to settings > display and then uncheck the backlight and keyboard light option off...weirdly it works for me

T-Mobile... | Answered on Nov 27, 2018

It sounds like the prong in the middle of the AC input is loose and therefore not making a good connection with the charger. What do you mean when you say "it won't come all the way back on?"

T-Mobile... | Answered on Nov 27, 2018

Trying going to the AT-T website and sending the SMS & Web settings to your phone, also make sure that the phone is fully unlocked to accept your SIM card, or ring tmobile and fing out if the phone is reported lost or stolen via the IMEI

T-Mobile... | Answered on Aug 21, 2017

i forgot the password to my SKK Mobilephone what can i do?

T-Mobile... | Answered on Jun 19, 2017

Out of synch as they dont work or lag? If they lag shut your phone off and reset it, if you have done that plug it in and see if there is new software to update it with, if not it might actually be an internal issue!

T-Mobile... | Answered on Feb 06, 2017


T-Mobile... | Answered on Feb 05, 2017

turn off your phone. then remove the battery for 5 minutes. also make sure your charger is not plugged in. then put the battery pack into the phone. it should clear up. also you might have over charged the battery. another solution is to buy a new battery pack and if that does not work your phone is acting up on battery basis

T-Mobile... | Answered on Dec 05, 2016

you enter your unlock code

T-Mobile... | Answered on Nov 01, 2016

plz downlod new softwear

T-Mobile... | Answered on Nov 01, 2016

i had the same problem with my lx. You need to have an internet plan for your phone to register it.

T-Mobile... | Answered on Oct 27, 2016

I can help go to They sell the code for privacy unlock code.

T-Mobile... | Answered on Oct 26, 2016

hello.. look at this link on youtube... it works... is for the privacy lock.

T-Mobile... | Answered on Sep 06, 2016

i forgot my password how can i remove it?

T-Mobile... | Answered on Aug 29, 2015

Be very wary of that sort of thing - particularly as you are calling an unknown number and - perhaps they want you to put in some numbers according to their instructions to 'have your phone opted out' - I'd risk the marketing people myself - I have such fun winding them up with various stories.

T-Mobile... | Answered on Nov 06, 2014

Do you want remove network lock password for your t-mobile-sidekick-4g-t839 ? yes means you can visit this site Mobileunlocksolutions.com here you can get the unlock code and remove your mobile network lock password easily. To get the code you have to mentioned which country is locked now,network provider and imei number. Then they send unlock code through email.

T-Mobile... | Answered on Jul 07, 2014

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