eSIMはほぼ常に70-90%安い。
主なポイント
- ローミングヨーロッパ7日間:70-105ドル。
- eSIMヨーロッパ5GB/7日:9-15ドル。
- 典型的節約:80-90%。
- 長期旅行で節約が指数関数的に増加。
結論
ローミングは緊急時のみ。
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