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No, the Samsung Galaxy A9 series, which includes models like A9 (2016) and A9 Pro (2017), cannot use eSIM. These phones are made to work with regular SIM cards and cannot support eSIM technology.
eSIM is a newer feature that lets you use mobile plans without a physical SIM card, but it is only available in newer Samsung models starting from the Samsung Galaxy S20.
If you want to use eSIM, you have two choices:
Important note: eSIM availability may vary depending on where you are and the mobile service provider you use.