Use a strong, unique password for your mobile carrier account
Enable a carrier account PIN or passcode
Avoid using easily guessed PINs like birthdays or repeated digits
Ask your carrier to add a port-out or transfer lock
Set up account alerts for SIM changes, port requests, and login activity
Use multi-factor authentication with an authenticator app or security key instead of SMS
Remove SMS as a recovery method for important accounts when possible
Keep your phone number private and limit sharing it publicly
Be cautious of phishing calls, texts, and emails requesting account details
Secure your email account with a strong password and non-SMS MFA
Monitor mobile service for sudden loss of signal or unexpected SIM deactivation
Contact your carrier immediately if your phone stops receiving service unexpectedly
Review account recovery options for banks, email, and social media
Use app-based or hardware-based 2FA for financial and critical accounts
Freeze or lock your credit if your carrier uses identity verification tied to credit data
Keep personal information off data broker sites where possible
Regularly check carrier account settings and authorized users
Replace weak security questions with random answers stored securely
Use a password manager to generate and store unique credentials
Report suspicious account activity to your carrier and affected services immediately