how to disable demo mode

[DRpapaya]

Please, I need to disable the DEMO mode on my phone. When charging the phone or I try to connect to the computer by cable, the Demo turns on and It resets my desktop settings. What do I do? No one has been able to give explanations about it, even in the place where I purchased the phone.
Waiting for a gently reply

My best 

[_alexdon_ · Accepted solution]

Dial *#*#73556673#*#* (SELLMORE).

[DRpapaya]

Live long and prosper. Thank you very much for your help, regards.

[_alexdon_]

The same to you,glad to help.

[SaidLebcir]

and what about the photos disappearing will it be fixed ?

[GauravSeedhar]

@alexdon thank You my friend.
Iam really grateful.
cYa

[_alexdon_]

Awesome!

[Jumat]

Hi, I am having the same problem to my xperia z ultra. I tried dialing *#73556673#*. But if I plug in the charger, it goes back to demo mode.

[_alexdon_]

You might have a demo unit,so the code doesn't do anything.

[gadgee]

The solution does not work on my new Z1.  Every time I connect the charger it reverts to demo mode and deletes any photographs taken as well as removing home screen changes (except wallpaper and lock screen ones).  I have tried the code many times but it is not working.  Driving me nuts!!