SpamGuard: SMS Filter

SpamGuard filters SMS spam entirely on your device — no server, zero network requests, and your message content never leaves the phone.

• Keyword and sender rules with normalization that catches obfuscated spellings • Smishing link detection: blocks shady links (URL shorteners, suspicious domains) combined with lure phrases — delivery, government, embassy impersonation and more, across 15 languages • On-device AI: a built-in Bayesian model gives a second-pass verdict on messages the rules can't decide, and personal training adapts to you • Live test screen: paste a message to see how it gets classified

Privacy first: nothing you receive ever leaves your device. Per Apple policy the filter doesn't apply to saved contacts or iMessage. After installing, open Settings > Messages > Unknown & Junk and enable SpamGuard.