eSIM、Wi-Fiとアプリでローミング完全回避。
主なポイント
- 旅行eSIM購入。
- メインSIMでローミング無効化。
- 通話にWhatsApp/FaceTime。
- 無料Wi-Fi活用。
- Wi-Fi Callingアクティブ化。
結論
eSIMとこれらのヒントで完全ローミングなし。
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