We understand. Unfortunately, we're having an issue with iPhone 6 not recognizing the SIM card. The issue has been escalated and is currently being worked on. In the meantime, we recommend you follow these steps and let us know the outcome:
1. Connect the device to Wi-Fi.
2. Tap Phone icon.
3. Tap Key Pad if necessary
4. Enter ##873283# and Call
5. Starting Service Update, tap OK.
6. Service Update Complete, tap OK.
Understood. Can you please send us a private message with your phone number, PIN, IMEI and ICCID (SIM card numbers) of your phone?
To send a private message just click on the picture of any Boost Mobile agent and, in the next screen, click "send this user a private message".