Short answer: resetting network settings can fix stubborn connection issues, but it also removes saved Wi-Fi networks and Bluetooth pairings.
Before resetting
- Confirm the 4S eSIM is installed.
- Confirm mobile data and roaming settings.
- Save any Wi-Fi passwords you may need.
After resetting
- Restart the phone.
- Reconnect to Wi-Fi.
- Select the 4S eSIM label for mobile data.
- Turn on roaming for that line.
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.