Use your phone offline
In places where you do not want to make or receive calls, you may still access your music, videos, and offline games if you switch to the offline profile.
Press the power key , then select Turn offline mode on.
When the offline profile is switched on, your connection to the mobile network is closed. All radio frequency signals between the phone and the mobile network are prevented. If you try to send a message, it is placed in the Outbox folder, and is sent only when you switch to another profile.
You can also use your phone without a SIM. Switch the phone off, and remove the SIM. When you switch back on, the offline profile is switched on.
When the offline profile is switched on, you can still connect to a Wi-Fi network to, for example, read your mail or browse the internet. You can also use Bluetooth.
If NFC is switched on, it is on also in the offline profile. To switch NFC off, select > Settings and Connectivity > NFC , then switch NFC to Off.
Switch the phone off when mobile phone use is not allowed or when it may cause interference or danger. Remember to comply with any applicable safety requirements.