On the iPhone 4s, how do I turn off everything to do with the Internet?

Hi, I'm going on holiday abroad and using Internet costs a hell of a lot of money, and I was worried that things like 'Facebook' and 'instagram' would notify me a lot, and these use the Internet, how do i switch it off, without having to delete all the apps and stuff?

Sorry if this seems confusing. :/

Oh you have to turn on airplane mode, but It'll turn off texting and calling, which will also
Cost a ton. So it works all in all. I went to mexico for a while and only turned it back on for emergencies, like when my family left me at the scary walmart. Yeah i have good parents

Go into Settings, Wi-Fi, make sure your Wi-Fi is off, then go back to your main Settings, and turn on Airplane mode. That will cut off all Internet (including 3G). However, that uses battery, so be prepared to charge more.

Go to settings
General
Network
Turn off mobile data
And data roaming

Ok so go into settings And turn off Wi-Fi the turn of Data Roaming or if you simply want to keeps someone out use restrictyions on Safari…

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