How to use : iPhone 4s

This guide describes settings that must be configured on iPhone 4s for use overseas and how to use these devices.

Before departing

<If necessary> Airplane Mode setting

If necessary, set your device to Airplane Mode during your flight.

After arriving

How to check carriers

How to Access

設定(Select Settings) → Carrier to display the carrier you are connected to.

After returning

Restore the settings for use in Japan

After returning to Japan, it is recommended that you set "ローミング(Roaming)" to OFF. If you leave the setting ON, your phone may automatically use the roaming connection the next time you go overseas. Restore the settings to those for use within Japan before using.

設定(Settings) → モバイルデータ通信(Cellular) → ローミング(Roaming) → set "音声通話ローミング(Voice Roaming)" to ON and "データローミング(Data Roaming)" to OFF.

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