Roaming turned on, how can I turn off this option?

[AC Question]

Roaming turned on

i have samsung glaxy s3 SGH-i747
i have a problem for 3 days in my mobile roaming turned on and a page appear on my screen that were Add city
karachi
Islamabad
how can i turned off this option

 

[Rukbat]

Re: Roaming turned on

Roaming is something from the turn of the century - if you have service now, you have service, Check with your carrier to make sure they don't charge roaming charges. (That stopped years ago - and, as far as I know, it stopped everywhere.)