Short answer: unused data normally expires when the validity period ends.
Before expiry
- Check remaining data and validity on your 4S service page.
- Use the data before the end of the validity period.
- If you need more time or data, check whether top-up is available or buy a new plan.
Need help?
Contact 4S support through support@4s.net, a Zendesk support ticket, or Zendesk live chat. Do not reply to hi@4s.net; it is an automatic order and installation email sender.
When contacting support, include your order email, ICCID if available, destination, phone model, and screenshots of the error or SIM/eSIM settings page.