A phone that holds the Wi-Fi for ten minutes and then quietly switches to cellular is one of the most common complaints there is, and most pages about it open with "restart your router." That may work. It also throws away the one piece of information worth having, which is whether the problem follows the phone or stays with the network.
The steps below go from cheapest to most destructive. Do them in order and stop at the one that works. They match the Settings layout Apple documents for current iPhones; if your phone is several versions behind, the names are close but the nesting may differ.
First: find out whether it is the phone or the network
Before changing anything, watch what happens on a second device. If a laptop or a tablet on the same network drops at the same moments, the phone is innocent and the rest of this page will not help you. If only the iPhone drops, keep going.
The second thing worth knowing is whether it drops everywhere or in one place. A phone that only loses the connection at home has a different problem from one that does it at work too.
Second: make the phone forget the network and join it again
This is the step that fixes it most often and the one that costs the least. Open Settings, tap Wi-Fi, tap the information button next to the network name, then tap Forget This Network and confirm with Forget. Apple documents this path in its page on forgetting a Wi-Fi network. Then join the network again with the password.
What this does is discard the stored profile for that one network, including a password that may have been saved wrong and settings the router has since changed. Nothing else on the phone is touched.
Third: check Auto-Join on the networks you do not want
A phone that seems to drop is sometimes a phone that is leaving on purpose, because a second network it remembers came into range. The same Apple page describes turning off Auto-Join for a network instead of forgetting it: the phone keeps the password but stops jumping onto it by itself.
This is worth checking in a building with several access points, or anywhere a public network you joined once still has a saved profile.
Fourth, and only if the first three fail: reset network settings
Apple's own troubleshooting page for an iPhone that cannot connect to Wi-Fi gives the path as Settings, then General, then Transfer or Reset iPhone, then Reset, then Reset Network Settings.
Read what it erases before you tap it, because it is more than the network that is bothering you. Apple states that this resets all Wi-Fi networks and passwords, cellular settings, and VPN and APN settings. Every network the phone has ever saved goes, and you will be typing passwords again for a while. That is why it is fourth and not first.
If the menu is not where this says
Apple moved the reset options into Transfer or Reset iPhone a few versions ago; on older software they sit directly under General, labelled Reset. If you cannot find Transfer or Reset, look for Reset on its own. The Wi-Fi information button has also changed shape over the years: it is the circled letter i at the right of the network name.
What none of this fixes
These four steps only cover the half of the problem that lives on the phone. A router that reassigns addresses too aggressively, a mesh system handing the phone between nodes, interference from a neighbour on the same channel, or a failing access point will survive all of them. If the phone drops on one network and holds every other one, the next thing to change is the router and not the iPhone.
Worth knowing before you decide the phone is at fault: how long it keeps getting fixes at all. Which iPhones actually get the current Siri is the same question asked about features rather than bugs, and the answer comes from the same place, which is Apple's own published device list.
Last updated October 4, 2026