Before installation
Confirm the phone is unlocked and eSIM-compatible, then install over stable Wi-Fi.
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stage of the trip.
Sign in for account-aware support, or email us without sharing activation codes, card details, or passwords.
After arrival
Select the Constella line for mobile data, enable data roaming for that line, and verify the purchased pack covers the destination.
Payment received
If checkout succeeded but provisioning is pending, do not pay again. Contact support with the payment time and last six ICCID digits.