If you only disable WiFi, mobile data, NFC and Bluetooth you still leave normal telephony and SMS/MMS.
MMS was for example the attack vector for exploiting the Stagefright bug which is still not fixed on all mobile phones. Even if mobile data are switched off you'll still receive a SMS notification about the pending MMS which is spooled at the provider and will usually be automatically downloaded as soon as mobile data are available again. This means that the Stagefright exploit will not be triggered when somebody sends the message to you but only once you feel safe again to turn mobile data on again.
In other words, it might still be possible to hack your phone this way, only that the exploit will not be active immediately.