Can I use my mobile phone in Indonesia?
Can I use my mobile phone in Indonesia? This automatically means that all phones coming from outside of the country must be registered with the Indonesian Customs. If you wish your device to operate in Indonesia it is advisable for you to register it unless you plan to buy a new phone from Indonesia.
Should I turn off cellular data when Travelling internationally?
If you're relying on Wi-Fi, it's important that you turn off cellular data on your phone, otherwise you may inadvertently rack up international roaming charges. Skype, Google Hangouts and other apps also let you make free video calls with other users over an internet connection.