System tower · floor

How to stop spam texts: three filters and three reports

Block the number is the obvious answer to how to stop spam texts, and it is the narrowest of the moves available. Not useless — narrowest, and Apple says why in its own description of what blocking does. That description is worth reading before an evening spent tapping Block this Caller, because it sets out exactly how far one block reaches.

Notice the order the FTC puts them in: the device, then the network carrying the message, then a third party added on top. The two outcomes named in its opening sentence — filtering a message, and stopping it before it reaches you — are not the same result, and the FTC does not say which route delivers which. What the list does establish is that not all of this happens on your phone, which is the useful part once the phone setting has not been enough.

The second sentence of that quotation is the one to keep: the contact will not get a notification that the call or message was blocked. Where the sender is somebody you know, that silence is protective. Where it is a stranger sending commercial messages, the same silence means the block produces no signal at all — nothing is informed, nothing is recorded anywhere but on your own device, and the only thing that changes is what you see.

So the question becomes what you can do that reaches further than your own screen. There are two answers, and the FTC gives both. One is the layer above the phone.

The other is the part of this that is not a setting at all: knowing which messages are worth nothing before you interact with them. The FTC publishes what the bait looks like, and the list is short enough to read once.

Two things are worth saying about that list. It is not a checklist to run through under pressure — a message that matches none of the seven can still be a scam. And the FTC is explicit about what happens after the click: some links “take you to a spoofed website that looks real but isn’t”, and if you log in “the scammers then might steal your username and password”, while others “might install harmful malware on your phone that steals your personal or financial information without you realizing it.” The damage does not require you to type anything back to the sender.

On the iPhone specifically, it is worth knowing where the boundaries of each tool are. Apple describes blocking as reaching across the apps — a number blocked in Phone, FaceTime, Messages or Mail is blocked as a contact, and Apple notes that email blocking “works across all your Apple devices”. Filtering unknown senders and reporting junk are described more narrowly: Apple presents them as things you can do with iMessages. Blocking and filtering are not the same feature with two names.

One practical note that follows from all of it. If your list of blocked numbers has become long enough to be a chore, that is a sign the effort is going into the wrong layer. Apple documents a single place to manage the list — Settings, then Privacy & Security, then Blocked Contacts, where numbers can be added and removed directly — which is more useful for tidying up than for keeping ahead of anything.

The floors below take it three ways: the filters and where each one sits, what blocking and reporting actually do, and the neighbouring problems people arrive here with.

What this tower will not do

It will not tell you blocking solves this. Apple’s own description says a blocked sender gets no notification and can still leave a voicemail, and that is quoted here rather than skipped.

It will not recommend a blocking app. The FTC names the category and tells you to check the features and reviews yourself, which is the honest amount of guidance available without testing.

And it will not tell you to reply STOP to a message you did not expect. The FTC’s advice is not to interact with an unexpected message asking for information — the routes it gives are filtering and reporting, not replying. What holds instead is simple: the three filtering routes, the list of what spam messages claim, the rule that legitimate companies do not ask for account information by text, and the three reporting routes including forwarding to 7726 are quoted from the Federal Trade Commission; the description of what blocking does is quoted from Apple. Sources below.