If your new Boost SIM won't activate, follow these quick fixes. Get your Boost Mobile service up and running with step-by-step activation instructions and troubleshooting solutions.
Visit activate.boostmobile.com.
Select "Activate SIM" or "Activate eSIM".
Enter your ICCID (SIM number) and device IMEI.
Follow on-screen instructions.
Restart your phone after activation to refresh network settings.
Check APN settings (Settings → Mobile Network → Access Point Names → "Boost Mobile").
APN Settings:
Name: Boost Mobile
APN: boost
MMSC: http://mm.myboostmobile.com
MMS Proxy: 68.28.31.7
MMS Port: 80
If still inactive, contact Boost support at 833-502-6678.