Wi Fi Only On Samsung J3 (2017)

[Llonaid]

I have recently purchased a Samsung J3 (2017) smartphone and use it on a PAYG sim.
Other than making and receiving calls, I do not use this phone outside the house. can someone advise how to change its settings so that I can only connect to the internet via my home Wi Fi.
I find that otherwise my PAYG balance is being used regardless of using the phone or not.
Many thanks

[chelle7272]

You need to turn off mobile data. You should have an icon on the pull down status menu on the home page. Otherwise go to apps \ settings \ data usage and turn it off there.

[Hopkirk]

Well on a different Android phone I go

Settings

Data usage

Mobile data, move the switch to off.

[Llonaid]

Thank you chelle7272 and Hopkirk for your answers. Now all done and dusted!

[bainbrig]

Watch your bills Lion. Had same problem and Vodafone were charging £2 per DAY even though I never used the damned mobile www.

[Llonaid]

Thanks bainbrig, I Will look out for this.