Airplane mode in phone cause trouble in configuring updates

I have a new phone that I am yet to master all its features. Recently I activated airplane mode and as a result, I am now unable to configure my update and unable to access a wide range of services for instance, connect to the Wi-Fi, iTunes or even make a call a few friends. I thought restarting the phone would solve this issue but nothing really changed. I am now seeking your help which will enable me to restore a normal profile. Thanks.
