In the stairwell the phone joins a stranger’s network by itself. The internet disappears, or a sign-in page appears that you did not open. At home it sometimes stays on the same name and no longer takes your router until you forget the stranger’s network.
Forgetting a network on Android and on iPhone is different presses. On Android it is usually a long press on the name in the Wi-Fi list, then Forget. On iPhone it is the details button next to the name, then Forget This Network. I do not invent one path for both phones: there is none.
What is happening
The phone remembers networks it was once allowed onto, and open networks with no password, if it was allowed to pick them up by itself. In the stairwell such a network is often without a password, or with a familiar piece of a name. The signal by the door is higher than your router on the landing, and the phone switches.
An open network can show a page with a Continue button. That is the network’s own page, not your operator and not the bank. A login, a mail password, and a code from SMS are not typed there. Close the page. While the phone sits on that network, your sites go through a stranger’s router.
Auto-connect turns on at the first join, sometimes with a tick you did not notice. While the tick is alive, the phone will come back. Forget erases the memory of that network and the password, if there was one. Your home Wi-Fi is not erased if you forgot the stranger’s name, not your own.
Similar names are a separate trap. A stairwell network can be named almost like yours, with one extra letter or without one. The phone does not compare the sticker on your router. You do that. You joined the twin once, and it stays in the known list until it is forgotten.
On Android a long press on the network line opens a menu: forget, turn off auto-connect, or share. On some skins you first open the network details with the gear by the line. The meaning is one: remove this network from memory. On iPhone a round “i” button or a details mark sits next to the name. Inside is Forget This Network. Simply turning Wi-Fi off until tomorrow does not clear the memory.
So it does not grab it again
After forgetting, turn off pickup of open networks if that item exists. It may be named about open networks, auto-connect, or a notice about networks. Labels on Samsung, Xiaomi, and plain Android differ. On iPhone the wording is its own too. No item – it is enough to forget the specific name and not press Connect by the door.
Put the home network first by forgetting the stranger’s one, not by turning Wi-Fi off for good. Mobile data by the door is calmer than a stranger’s open network. Use on the mobile network is a separate talk with the operator, not a reason to sit on someone else’s Wi-Fi.
A shared stairwell network that the building’s provider put up, and that you yourself agreed with the neighbors, is a different matter. You do not need to forget it if the name is exactly from your paper, not from a plate on the lift door. Doubt is settled by matching letters, not by a new program. A stranger twin with the same start of the name is the one you forget.
After you change the home Wi-Fi password, the phone can grab the stairwell for a minute, because the old password no longer fits. Type the new password of the home name by hand. Do not confirm Connect on the first open name in the list, even if it is on top and at full signal.
A tablet and a laptop remember the stairwell separately from the phone. You forgot the network only on the phone, and the tablet by the door sits on it again and can share it further through a hotspot. Check the second device with the same meaning: erase this name from memory, do not turn Wi-Fi off for half a minute.
What to check, in order
- Open the Wi-Fi list and read the name the phone joined in the stairwell. Compare it with the name on your router sticker.
- On Android press and hold that name. Choose Forget, or open details and remove the network. If a long press opened the wrong menu, look for the gear by the line.
- On iPhone tap the details button by that network and only then Forget This Network. Turning Wi-Fi off from the shade does not delete the network from memory.
- Close the sign-in page if it popped up. Do not type mail, a password, and SMS codes there.
- Find the item about open networks or auto-connect and turn it off if it exists. No item on your skin – do not hunt for it from a screenshot of someone else’s phone.
- At home connect to your own name by hand once and leave auto-connect only for that one.
- Check that you did not remember a second similar name. The stairwell should not remain in the known list.
- Do not install a program that promises to “ban all stranger networks” from nowhere. Forgetting and turning off auto-pickup are enough.
Where people usually go wrong
- They turn Wi-Fi off for a minute and think the network is forgotten.
- They press the same gesture on both Android and iPhone.
- They type a mail password on a page the stranger’s network opened.
- They forget their home Wi-Fi instead of the stairwell and then hunt for the password on the sticker in a panic.
- They leave auto-connect on a network with no password because “it is easier by the door”.
A stranger’s network is forgotten separately on Android and on iPhone. One gesture does not do it on both phones. Passwords and codes are not typed on a page that opened by itself.
What to do today
Open the Wi-Fi list in the stairwell or right at home, find the stranger’s name, and forget it: with a long press on Android or the details button on iPhone. Turn off auto-pickup of open networks if your phone has the item. Connect the home network again by hand and do not confirm a join by the door anymore. Close the page that asks you to sign in, typing nothing there.
