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How to Kick Someone Off Your Wi-Fi (Even From an iPhone)

A hand swapping an old brass key for a shiny new one on a ring beside a home Wi-Fi router, while a phone resting on a windowsill outside goes dark

Change your Wi-Fi password and anyone who only had the old one is out. Then lock the router, block single devices, and do it from an iPhone, Xfinity or AT&T.

Marco Lee6 min read

Change your Wi-Fi password. Everyone who only had the old one is disconnected and can’t rejoin without the new one, and you reconnect your own devices with the new one. Do it in your router’s or internet provider’s app, or on the router’s settings page, which you can open from an iPhone. Blocking one device also works, but I’d treat that as a quick fix, not the real one.

First, check who’s actually on it

Before you change anything, it’s worth knowing what you’re dealing with. Your router keeps the list of connected devices. How to tell if someone is using your Wi-Fi walks through finding that list. Then paste it into the free MAC address lookup to see who made each device and which ones use a private address.

An unknown entry can turn out to be a smart plug or TV you forgot about. If it still doesn’t match anything you own, carry on below.

Change the Wi-Fi password (this is what works)

Apple says changing the Wi-Fi password, like any router setting, happens in “the configuration webpage or app provided by the router’s manufacturer” (Apple Support). The steps:

  1. Open the router’s app, your internet provider’s app, or the router’s settings page.
  2. Sign in with the router’s admin login. That’s a different password from the Wi-Fi one (FTC).
  3. Find the wireless settings and set a new, strong password. Apple’s advice is to “always set a strong password for joining the network” (Apple Support). If your router shows a separate network for each band, change each one.
  4. Save. Devices using the old password drop off. Xfinity warns that afterwards “you’ll need to reconnect all your WiFi devices to your network” (Xfinity), and AT&T says the same (AT&T).
  5. Reconnect your own devices. On iPhone, go to Settings > Wi-Fi, tap your network and enter the new password. If it won’t connect, tap More Info next to the network, tap Forget This Network, then Forget, and join again (Apple Support). Apple notes you “might need to forget the network on each device” after changing router settings (Apple Support).

Forgetting a network on your iPhone also forgets it on your other devices that use iCloud Keychain with the same Apple Account (Apple Support), so expect to rejoin on those too.

If you never changed the password that came with the router, this step matters even more. Xfinity, for example, prints the default network name and password “on the side or bottom of your gateway,” and says “we strongly recommend that you change them” (Xfinity). Anyone who has seen that label has your password.

Lock the router so they can’t walk back in

A new password only helps if nobody can read it or skip it. The FTC lists a few settings I’d check while you’re signed in (FTC):

  • Use WPA3 Personal or WPA2 Personal. The FTC says to “update your router settings to either WPA3 Personal or WPA2 Personal,” and that “WPA and WEP” are “outdated and not secure.” If your iPhone shows a weak security warning, here’s how to fix it on the router.
  • Change the router’s admin login. “Change the default administrative username, password, and network name to something unique.” If someone gets into the admin side, they “could change the settings,” which “would undo any other security steps you may be taking.” The Wi-Fi password is one of those settings.
  • Turn off WPS. “WPS lets you push a button on the router to connect a device to the internet instead of entering the Wi-Fi network password.” The FTC says to turn off remote management, WPS and UPnP.
  • Keep the router up to date. Apple suggests turning on automatic firmware updates if your router has them (Apple Support).

Hiding the network name isn’t a fix. Apple says it “doesn’t conceal the network from detection or secure it against unauthorized access” (Apple Support).

Block or pause one device

Most router and provider apps let you pick a device from the connected list and block or pause it. It’s handy when you want one device off right now, or you don’t want to reconnect everything.

The catch is that blocking usually goes by the device’s MAC address, and phones use made-up private addresses that can change. An iPhone uses “a different MAC address for each Wi-Fi network.” It gets a new one for your network after a reset of network settings, or after it forgets your network (unless it forgot it less than 24 hours earlier), and one set to Rotating changes it every 2 weeks (Apple Support). Android phones use a randomized address by default from Android 10 on (Android Open Source Project).

Apple is blunt about MAC filtering: “You shouldn’t rely on this feature to prevent unauthorized access to your network,” because “MAC addresses can easily be copied, spoofed (impersonated), or changed” (Apple Support). So if the person knows your password, a block won’t keep them out for good. I’d block first if it’s urgent, then change the password.

How to kick someone off your Wi-Fi on iPhone

Your iPhone can do all of this, just not from its own Settings. You have two routes:

  1. The app. Use your router maker’s app, or your internet provider’s app if they supplied the router. The Xfinity and AT&T steps are below.
  2. The router’s settings page in Safari. Find the router’s address under Settings > Wi-Fi, then type it into Safari while you’re on that Wi-Fi. How to find your router’s IP address on iPhone has the steps. Menus differ by brand, so check your router’s documentation (Apple Support).

How to kick someone off your Xfinity Wi-Fi

These steps are for rented Xfinity Gateways (Xfinity).

To change the password:

  1. Open the Xfinity app and select the WiFi tab, then WiFi details.
  2. Select Edit WiFi settings at the bottom.
  3. Change the WiFi password and select Save.

The same screen lets you “change security settings” (Xfinity).

To pause one device, Xfinity uses Family Settings (Xfinity):

  1. Go to the Home tab and select a person under Family Settings.
  2. Scroll to Devices and choose the device.
  3. Select Pause at the bottom of the screen.

The device has to be assigned to a person first, and Xfinity says Family Settings come with Xfinity WiFi Shield and Shield Select on eligible accounts and equipment. Pausing “only affects access to your home WiFi network,” not cellular data or other networks (Xfinity).

How to kick someone off your AT&T Wi-Fi

In the Smart Home Manager app (AT&T):

  1. On the main screen, tap My Wi-Fi.
  2. Tap Edit next to the password.
  3. Enter the new password and tap Save.

On a computer, sign in to Smart Home Manager, choose Change on the My Wi-Fi card, enter the new password and select Save. Then “reconnect your devices with the updated network info” (AT&T).

To block one device, tap Profiles & devices, select the device and tap Block device. Offline devices are under View all previously connected (AT&T). For a short break instead, choose Pause Wi-Fi on the same screen and pick how long (AT&T).

Give visitors a guest network

If the freeloader is someone you once gave the password to, a guest network means the next visitor never gets your main password. “Many routers let you set up a guest network with a different name and password,” and “having a separate login means fewer people have your primary Wi-Fi network password” (FTC). Next time, you can change the guest password without touching your own devices.

Give the guest network a password too. Apple warns that turning off security lets anyone join and use your connection, and “this is a risk even if security is turned off temporarily or for a guest network” (Apple Support).

What Mistero can and can’t do here

Mistero can’t kick anyone off your Wi-Fi. It doesn’t list the devices on your network, and it can’t change your router’s password or block a device. That all happens on the router, as above.

What it does is look after your own iPhone’s connection. Mistero can “Check Wi-Fi for visible connection or DNS anomalies,” “Connect with one tap on public Wi-Fi,” “Mask your IP address while the VPN is active” and “Turn on Kill Switch to help stop network traffic if the VPN disconnects” (App Store listing, read Nov 5, 2026). More in is public Wi-Fi safe and on Mistero security.

Sources

Pricing New subscribers can start a 3-day free trial. After the trial, the subscription renews automatically at $12.99 per week unless you cancel at least 24 hours before the trial ends, in Settings > [your name] > Subscriptions (Apple Support). There's also a one-time Lifetime purchase for $99.99. These are US App Store prices as of October 2026; the purchase screen shows the current price before you confirm.

Frequently asked questions

How do I kick someone off my Wi-Fi on iPhone?

The iPhone's own Settings don't control your router. Open your router's or internet provider's app on the iPhone, or type the router's address into Safari, then change the Wi-Fi password or block the device. Rejoin your own iPhone with the new password afterwards.

Can you kick someone off your Wi-Fi?

Yes, if you control the router or the internet account. Changing the Wi-Fi password disconnects everyone who only knew the old one. Blocking a single device works too, but a phone can come back with a new private address, so I'd change the password as well.

How do I kick someone off my Xfinity Wi-Fi?

In the Xfinity app, select the WiFi tab, then WiFi details, then Edit WiFi settings. Change the password and select Save, then reconnect your own devices. To cut off one device instead, Xfinity's Family Settings can pause it, which blocks only your home WiFi.

How do I kick someone off my AT&T Wi-Fi?

In the Smart Home Manager app, tap My Wi-Fi, tap Edit next to the password, enter a new one and tap Save. To block a single device, tap Profiles & devices, select the device and tap Block device.
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