Mobile Data Turn on automatically

[Michy_Spiky]

i have xperia z5 premium dual after i turn on the device i see every time the mobile data On i must turn off by my self ,,, turn off the device again and turn on the mobile data turn on again !
what can i do to make it off always ??

i bought it from 3 days ago it was have lollipop 5.1.1 and i updated it the latest firmware 6.0 from the About Phone
sorry for my english

[_alexdon_]

@Michy_Spiky I have tried to replicate this and for me it doesn't turn on after a restart. Can you check if the same occurs in safe mode?

[Michy_Spiky]

How can i restart in safe mode ?

[Uliwooly]

@Michy_Spiky

Just tap where it says >>> safe mode

[Michy_Spiky]

Yes same problem .. Mobile data turned on without anything what can i do ?

[_alexdon_]

Is your phone network locked? It might be from your customization.

[Michy_Spiky]

Network locked how ? How can i customize it ? I have only one sim card

[Uliwooly]

@Michy_Spiky

Is your phone SIM locked? 

[Michy_Spiky]

No international

[_alexdon_]

@Michy_Spiky I am not convinced your device isn't locked. Can you try the following? Dial *#*#7378423#*#* - Service info - Software info and post here your customization number.