Dropping off, or switching on purpose?
"My phone keeps dropping off the Wi-Fi" can mean two different things:
- The phone really loses the Wi-Fi. The Wi-Fi symbol disappears, then comes back. That points to a phone setting, a hub setting the phone doesn't get on with, weak signal, or a hub or line fault.
- The phone uses mobile data anyway. Your data allowance goes down at home. That's usually a phone feature you can change.
This guide covers both. If your phone stays connected but is just slower than other devices, our guide to why one device is slower than the rest fits better. If every device loses the internet at once, start with broadband that keeps dropping out.
First, is it the phone, the Wi-Fi or the broadband?
Apple's and Google's troubleshooting pages both help you narrow down where the problem is before you change anything. Google's Pixel page boils it down to three tests:
- Phone: if another device, such as a laptop, can use the same Wi-Fi, Google says the problem is most likely your phone.
- Network: if your phone connects fine on another Wi-Fi network, such as at a friend's house, the problem is most likely your network.
- Internet: if the phone joins your Wi-Fi but nothing loads, the problem is most likely your internet connection.
Three more questions narrow it down at home:
- Do other devices drop at the same moment? Apple says that if your other devices can't get online either, there may be a service outage and you should contact your internet provider.
- Is it only in certain rooms? Drops in the same spots usually mean weak signal. Our guide to finding Wi-Fi dead spots shows how to map them.
- Does the hub itself restart? If its lights go through the start-up sequence on their own, see why a router keeps restarting.
If your iPhone can't connect to any Wi-Fi network at all, Apple says to contact Apple; for other phones, the maker's support is the equivalent. Running our broadband speed test on the phone and another device side by side also helps.
Your phone may be choosing mobile data on purpose
Phones can bring in mobile data when they judge your Wi-Fi to be weak. At home that can look like a fault, and it uses your data allowance. Each maker names the feature differently.
iPhone: Connectivity Assist (formerly Wi-Fi Assist)
Apple's support page on Connectivity Assist, published in September 2026, says it uses mobile data to improve your connection when Wi-Fi is slow or unusable, and that it replaces and supersedes Wi-Fi Assist, which used to sit in the Mobile Data (Cellular) settings, so the old switch has moved.
- Where it is: Settings > Wi-Fi, then scroll down (Apple says to update to the latest iOS first). It's on by default if Wi-Fi Assist was on when you updated, and off if Wi-Fi Assist was off.
- Just for your home network: Apple says you can turn it off for one network, for example if a router feature such as an ad blocker needs devices to stay on Wi-Fi.
- Data use: Apple says you might use more mobile data with it on. It isn't used when you're roaming abroad, in Low Data Mode, or with some third-party audio and video streaming apps.
Apple's checklist for an iPhone that can't connect to Wi-Fi includes making sure Connectivity Assist is off, so turn it off while you test.
Google Pixel: Adaptive connectivity
On Pixel phones, Google's help pages put the setting in Settings > Network and Internet > Adaptive connectivity > Auto-switch to mobile network. Google says it moves the phone from Wi-Fi to mobile data when there's no internet over the Wi-Fi or the signal to the router or access point is weak, giving a smoother connection that may use more mobile data. Other Android phones have similar options under different names.
Samsung Galaxy: Intelligent Wi-Fi
Samsung's support pages (written for US models; Samsung says options vary by carrier and model, so UK menus may differ) put these under Settings > Connections > Wi-Fi > the three-dot menu > Intelligent Wi-Fi. These can look like drop-outs:
- Switch to mobile data: Samsung says the phone switches to mobile data whenever the Wi-Fi connection is unstable, and back to Wi-Fi when the signal is strong.
- Turn Wi-Fi on/off automatically: Samsung says this turns Wi-Fi on or off in frequently used locations (it needs a SIM), so check it if Wi-Fi is off when you expect it on.
- Switch to better Wi-Fi networks: Samsung says this moves the phone to faster or more stable networks, and only when the screen is off, so a phone that wakes on a different saved network may be using it.
- Wi-Fi power saving mode: covered under power saving below.
Should you turn these features off at home?
Leave them on if a smooth connection matters more than your data allowance. Turn them off, or on an iPhone turn Connectivity Assist off just for your home network, if:
- your mobile data allowance is small and keeps running out at home;
- you rely on a hub feature that only works on Wi-Fi, such as parental controls or an ad blocker;
- you're trying to find out whether your Wi-Fi really is weak somewhere.
Switching them off doesn't make weak Wi-Fi stronger. If the phone switches in the same rooms every day, the real fix is better coverage there.
Private Wi-Fi addresses: why your hub may not recognise your phone
Every Wi-Fi device has a MAC address, a hardware ID that your hub uses to tell devices apart. To make tracking harder, phones can now show your network a made-up address instead; Apple says its devices use a different one for each network.
- iPhone and iPad: from iOS 18 Apple offers three options per network: Off (the real hardware address), Fixed (a private address that doesn't change) and Rotating (changes every two weeks). The setting is in Settings > Wi-Fi > the More Info button next to the network > Private Wi-Fi Address.
- Android: Google says phones on Android 10 and above have another MAC address, shown as "Randomised MAC address" in the network's settings, as well as the phone's own Wi-Fi MAC address.
What this can break
Apple says a private address doesn't affect how you join or use most Wi-Fi networks. But if a device can't join, or can't reach network resources or the internet after joining, Apple lists it among the things to check. It can also upset hub features that recognise devices by address. eero, the mesh Wi-Fi maker, says a device that changes its address may show as "Unknown", and IP reservations (a fixed local address for a device), port forwarding, nicknames, pausing or blocking and profiles may be affected. So a bedtime pause set for a child's phone may stop applying, and Apple says a router set to alert you to new devices will flag a device the first time it joins with a private address.
For parental controls on Android, Google suggests adding both the phone's own MAC address and its randomised one. Apple advises switching MAC filtering (allowing only listed addresses to join) off altogether, partly because some Apple devices use a different address on each network. Our guide to broadband parental controls covers other ways to manage children's devices.
Should you turn the private address off?
Apple suggests leaving it on for privacy; if you have problems, it says to install the latest software updates and try again before deciding to turn it off for that network. eero calls randomisation a good way to protect your privacy in public places but says that on a home network you manage, it may not be necessary. The choice is per network either way. Three practical points:
- Forgetting the network resets the address. Apple says forgetting a network also forgets its private address (on iOS 18 and later, unless you last forgot it less than 24 hours ago). So "forget and rejoin" can make your hub see a brand-new device, and rules tied to the old address will need setting up again.
- So does resetting network settings. Apple says the device then uses a different private address the next time it joins.
- Rotating changes every two weeks. Apple's devices choose Fixed by default when they first join a network with WPA2 or stronger security, and Rotating when they first join one with weak or no security. If your home network shows Rotating, a rule tied to the phone's address may lapse every fortnight; you can switch it to Fixed. It's also worth checking your hub's security setting; see securing your home router and Wi-Fi.
One Wi-Fi name, two or three bands
Hubs broadcast on two radio bands, 2.4GHz and 5GHz (some newer ones add 6GHz), and many show them under one network name, or SSID (service set identifier), moving devices between bands for you. eero calls its version client steering and says it tries to move dual-band devices to 5GHz, which is typically less crowded. Here's what matters for phones.
Apple recommends one name for all bands, and the same name on every router in the home, because with different names devices may not connect reliably. BT says most new devices work well with dual-band Wi-Fi, and that its Home Hub 4, Hub 5, Smart Hub 2 and Smart Hub 3 use one name for both bands by default. But BT says some devices handle this badly, naming some Apple devices including the iPhone 5, some Android phones and some Xbox consoles; they may fail to connect, have an intermittent signal or be very slow.
Splitting the bands on a BT hub
BT says splitting isn't something it would recommend, and suggests trying its Wi-Fi tips first. Whether you can split them depends on the hub: BT says the Smart Hub 2 can't, because it's designed for use with Complete Wi-Fi, while older hubs can give 5GHz its own name in Hub Manager. Our guide to smart devices that won't connect to Wi-Fi explains the bands in more detail and sets out BT's steps for each hub. If your phone struggles with the shared name, the compatibility networks below may be the gentler option.
Compatibility networks
Some providers offer an extra network for awkward devices instead of splitting the main one:
Provider | Feature | What the provider says |
|---|---|---|
BT | Compatible Wi-Fi (newer Smart Hubs; BT says check your model) | Adds a separate 2.4GHz network for older or smart devices; both networks can be used at once. |
EE | Compatible WiFi (on EE's latest Smart Hubs; EE says check yours) | A separate 2.4GHz network for devices that can't find the main network, fail during setup, disconnect often or only work on 2.4GHz. |
Vodafone | WiFi compatibility mode | Separates the bands into another network with the same password. Devices may disconnect briefly and get a new IP address when they reconnect. On the Ultra Hub, Vodafone says the Default WiFi already suits older devices. |
EE lists smartphones among the devices that may need its Compatible WiFi, so if your phone keeps disconnecting, trying it on the 2.4GHz network is a quick test. EE and BT both say it may be slower than the main network.
BT's help also describes a wireless mode setting on the BT Smart Hub (check your hub's Advanced Settings > Wireless). BT says Mode 2 may help devices that struggle with the latest wireless features, possibly with less range and throughput, while Mode 3 enables the broadest range of devices but reduces some features, including power-saving procedures. Devices may lose connection when you change mode; it isn't on the Home Hub 3, 4 or 5. For Sky and Virgin Media hubs we found no official help page on separating the bands (checked October 2026), so ask their support.
Mesh systems: the phone that clings to the far unit
With mesh Wi-Fi (several units working as one network), a phone can stay on a distant unit while you stand next to a nearer one. eero says its client steering encourages devices to move to the nearest unit as you go from room to room, but that different devices have different thresholds for when to roam, so some keep a stronger link to a unit farther away. It says there's no need to worry if the device is performing as usual.
If performance drops, eero suggests checking that Client Steering is turned on, moving units away from other electronics and out of cabinets or cubbies, and moving a unit closer to the main unit or another one. If it keeps happening, the placement of the units may need a rethink; see mesh Wi-Fi vs Wi-Fi extenders.
Power-saving settings: what's known and what isn't
Battery-saving modes often get the blame, but the makers' pages say less than you might expect.
- iPhone Low Power Mode: Apple lists what it limits, including Auto-Lock, background app refresh, email fetch and automatic downloads. Wi-Fi isn't on that list, so there's no sign from Apple that Low Power Mode is behind a Wi-Fi drop.
- Samsung Wi-Fi power saving mode: Samsung describes it as using Wi-Fi traffic analysis to reduce battery use. Samsung doesn't say it causes drops, but if your Galaxy loses Wi-Fi mainly while idle, switching it off for a few days is a simple test.
- Your phone's hotspot: Google says Pixel phones that can't run a hotspot and Wi-Fi together (it gives the Pixel 7a as an example) turn Wi-Fi off while the hotspot is on. When the hotspot switches itself off after 10 minutes with nothing connected, Wi-Fi turns back on and tries the last known network. If you share your phone's data with a laptop, this can look like the Wi-Fi dropping.
Phones joining EE WiFi or another hotspot instead of your hub
Sometimes the phone hasn't dropped off at all: it has joined a different network. BT says devices that have used EE WiFi public hotspots (formerly BT Wi-fi) when out and about can keep connecting to them instead of the home hub. It suggests turning Wi-Fi off and on to reset the connection and, on an iPhone or iPad, picking your hub's network in Settings > Wi-Fi; on a Mac or older Windows computer, move your hub above EE WiFi in the saved networks list.
The same can happen with any saved network in range. Google says Android phones connect automatically to saved networks nearby when Wi-Fi is on. To stop it, go to Settings > Network and Internet > Internet, touch and hold the network and tap Forget.
Your network's name matters too. Apple advises against common or default names, such as linksys or netgear, because devices are then more likely to come across other networks with the same name and try to join them.
Fixes to try, in order
These steps come mostly from Apple's and Google's own troubleshooting pages. Go from quickest to most disruptive and stop when the problem goes away.
- Turn Wi-Fi off and on. Google also suggests switching Aeroplane mode on and off.
- Restart the phone.
- Turn off Connectivity Assist, Auto-switch or Switch to mobile data while you test, as above, so you can see what the Wi-Fi is really doing.
- Forget the network and rejoin it. Have the Wi-Fi password to hand. On an iPhone this usually also gives the phone a new private address for that network.
- Test without VPN or security apps. Apple suggests uninstalling them, restarting and testing; if that fixes it and you need the software, contact its maker.
- Rule out other apps. Google suggests restarting a Pixel in safe mode to check whether a downloaded app is causing the problem.
- Check the date and time. Google suggests setting the time to update automatically.
- Update everything. Update the phone's software and, as Apple suggests, the router's firmware; if you're not sure how your hub updates, ask your provider.
- Move closer, and try another band. Apple says to make sure you're in range of the router and, if it supports separate frequencies, to try joining another one, for example 5GHz instead of 2.4GHz.
- Restart the hub. Google says to unplug it for 15 seconds.
- Reset network settings, as a last resort. Apple says to do this only if other solutions fail. On an iPhone it's Settings > General > Transfer or Reset > Reset > Reset Network Settings, which Apple says resets all Wi-Fi networks and passwords, mobile settings and VPN and APN settings; Apple says the phone then uses new private addresses when it rejoins. On a Pixel it's Reset Bluetooth and Wi-Fi under Settings > System > Reset options.
One warning for Android: if you reset the connection from Quick Settings instead (swipe down, touch and hold Internet, tap Reset), Google says it ends any phone or video call in progress.
When it's the hub or the line, not the phone
If other devices drop out at the same time, the phone is probably just the messenger. Our guides to reporting a broadband fault and Wi-Fi that's connected with no internet take it from there. If you rely on Wi-Fi calling because mobile signal indoors is poor, a phone that keeps leaving the Wi-Fi can affect your calls too.
If you've ruled out the phone and the hub keeps letting you down, and you're out of contract or close to it, it's worth looking at what else is available. Our guide to UK broadband providers and the BT, EE and Vodafone deal pages cover the providers whose compatibility features are mentioned above. You can compare deals at your postcode through our partner's comparison widget; we don't switch you ourselves, and you sign up with the provider you choose.
What to ask your provider
These questions get to the point faster:
- Does my hub use one network name for all bands? Can I give 5GHz its own name, or turn on a separate compatibility network?
- Is my hub's firmware up to date?
- Do the hub's parental controls or device blocks recognise devices by MAC address? How do they handle private or randomised addresses?
- Can you see drops from your end, or a known fault in my area?
Phone dropping off Wi-Fi FAQs
Why does my iPhone switch to mobile data when I'm connected to Wi-Fi?
Most likely Connectivity Assist, which Apple says uses mobile data when Wi-Fi is slow or unusable. Apple's Connectivity Assist page, published in September 2026, says it replaces Wi-Fi Assist, and it now sits in Settings > Wi-Fi. You can turn it off completely or just for your home network, and Apple notes it can use more mobile data while on.
How do I stop my Android phone switching from Wi-Fi to mobile data?
On a Google Pixel, turn off Auto-switch to mobile network in Settings > Network and Internet > Adaptive connectivity. On a Samsung Galaxy, look for Switch to mobile data under Settings > Connections > Wi-Fi > More options > Intelligent Wi-Fi; Samsung says the options vary by model and carrier. Other Android brands use different names for the same idea.
Should I turn off private Wi-Fi address on my iPhone?
Apple suggests leaving it on, and says it doesn't affect how you join or use most networks. If it causes problems, such as the phone failing to join or reaching no internet after joining, Apple says to update your software and try again first. If it still fails, you can turn it off for that one network under Settings > Wi-Fi > More Info > Private Wi-Fi Address.
Why does my hub app show my phone as a new or unknown device?
Your phone is probably using a private or randomised MAC address, and forgetting a network on an iPhone usually gives it a new one. Apple says a router set to alert on new devices will flag it. eero says a device whose address changes may show as Unknown, and rules such as pausing or blocking may stop applying.
Why does my phone keep connecting to EE WiFi instead of my home Wi-Fi?
BT says devices often join EE WiFi hotspots, formerly BT Wi-fi, after being used away from home. Turning Wi-Fi off and on resets the connection; on an iPhone, pick your hub's network in Settings > Wi-Fi. On Android, forgetting the hotspot stops the phone joining it automatically.
Will resetting network settings delete anything on my phone?
Apple says Reset Network Settings resets all saved Wi-Fi networks and passwords, mobile settings and VPN and APN settings, so you'll need to rejoin networks and set up any VPN again. Apple says the phone also uses a different private address the next time it joins each network. Apple says to reset network settings only if other solutions fail.



