Enabling SMS Shield's filter. You'll have to do a tiny bit of Settings legwork before SMS Shield can do its thing.
Feature-packed and always learning. SMS Shield is always learning, especially with your help. It's also got all of the features you could ask for.
What is it about?
SMS Shield was developed specifically for iOS 11, utilizing ML to detect and stop spam before it can get under your skin.
Why we love it
We love SMS Shield not only because it's super-intelligent, but because it's always learning. While our testing didn't find the app to be 100 percent perfect, it was amazingly accurate. If you happen to receive a spam or phishing message that SMS Shield doesn't filter, it's easy to let the developers know about it. First, copy the spam or phishing text message. Then, just go to the SMS Shield app, tap on Report an SMS, and paste the offending message into the field. The developers will feed that into their ML algorithm, so SMS Shield will become even more intelligent. The app also features a "Frequent traveler" mode. If you enable that feature, SMS Shield also recognizes text messages carriers sometimes send you when you're roaming internationally, and filters them away from your view. That way, you don't get bogged down reading SMS messages that you really don't care about. You can also make use of a custom block list, where you can input phone numbers (even using wildcards, like 330-759-320*) to filter out specific numbers or short codes. Finally, SMS Shield supports more than just English. The app also provides support for Portuguese, Italian, and Arabic. The developers are open to other languages, so don't think they're just going to rest on their laurels now that the app is released.
SMS Shield is FREE but there are more add-ons
App Store Description
SMS Shield is a Machine Learning-based SMS spam filter for iPhone. We trained it on what spam SMS looks like by showing it tens of thousands of spam SMSs beforehand. SMS Shield then learns and, to a high degree of confidence, can identify spam even it haven't seen it before. Besides spam blocking, SMS Shield includes innovative features like Frequent Traveler Mode.
+ Automatic Spam Filtering
SMS Shield will automatically block SMS spam like promotions, ads, phishing and scam attempts at stealing your sensitive information (e.g. SMSs claiming to be from your bank).
+ Frequent Traveler Mode
Enable this innovative feature during your business travels to block the often-annoying SMSs sent by mobile operators when visiting other countries (e.g. "Welcome to country X...").
+ Custom Block List
With custom block list, you can block SMSes from specific phone numbers or that include specific keywords. Remember that annoying Ex who keeps SMSing you years later? Blocked!
+ 100% privacy guarenteed
SMS Shield is an offline SMS filter. Meaning it does the filtering offline, on your device. All your texts are 100% private.
+ Multi-lingual spam detection
SMS Shield detects spam (and is localized) in English, Portuguese (Brazil), Italian, Swedish, and Arabic.
If you would like us to add a specific language email us with spam texts you receive (as many as possible).
GOLD: 1 year spam filtering subscription
SILVER: ½ year spam filtering subscription
CLASSIC: 1 month spam filtering subscription
Payment will be charged to your iTunes account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period. To manage subscriptions or turn off auto-renewal go to your iTunes account settings after the purchase. Any unused portion of the free trial period will be forfeited when you purchase a subscription.
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