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Essential Information for Using a Vietnam eSIM is as follows.
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How to check Your Phone Number
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Open the Phone app, enter *111#, and press the call button.
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The 10-digit number following “TB” is your phone number.
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How to Check Your Data Usage
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Send a text message with “ALOTS” to 900.
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The reply message will display the remaining data as “xxxxMB Data”.
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What is the validity period of a Vietnam eSIM?
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Vietnam eSIM Validity is calculated in days.
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For example, if you activate the eSIM at 22:00, one day will be deducted at midnight (00:00).