# Robot vacuum won't connect to Wi-Fi: fixes

Source: https://dockandmop.co.uk/blog/robot-vacuum-wifi-not-connecting
Published: 2026-10-12
Publisher: Dock and Mop

**In short:** Most robot vacuums only connect to 2.4 GHz Wi-Fi, so the usual fix is to make sure your phone and robot are on a 2.4 GHz network, which may mean splitting or renaming your router's bands. Then check the app has location and Bluetooth permission, move the robot nearer the router, and reset the robot's Wi-Fi before trying setup again.

Wi-Fi setup is where many new robot vacuums trip up. The robot has a small, simple radio, and modern routers do clever things, such as combining bands under one name or using newer security, that can confuse it. The fixes below work across most brands, including Dreame, Shark, Eufy, Roborock, Ecovacs and iRobot, although menu names and button sequences vary. Work through them in order from simplest to hardest, testing after each step.

## Start here: quick checks

Several simple issues stop setup before anything technical is involved. The robot needs to be switched on and charged, the app must be up to date, and you need the correct Wi-Fi password, which is case-sensitive. Many apps also need your phone's location and Bluetooth turned on, because they use them to find the robot during setup.

1. Charge the robot on its dock and switch it on.
2. Update the maker's app on your phone and sign in.
3. Turn on location services and Bluetooth on your phone, and allow the app to use them (and local network access on iPhone).
4. Check your Wi-Fi name and password carefully; avoid unusual characters if setup keeps failing.
5. Restart the router, the phone and the robot, then try setup again next to the router.

## Use a 2.4 GHz network

Most robot vacuums connect only to 2.4 GHz Wi-Fi, and several product listings state 2.4 GHz only. Some newer models support 5 GHz as well, so check the specification for yours. The 2.4 GHz band travels further through walls, which suits a robot that roams the whole home.

Many UK broadband routers broadcast 2.4 GHz and 5 GHz under one name and move devices between them automatically, known as band steering or smart connect. During setup your phone may be on 5 GHz while the robot can only see 2.4 GHz, and the connection fails. The usual fix is to separate the bands for setup.

Log in to your router's settings page or app and look for an option to split the bands, turn off band steering or smart connect, or give the 2.4 GHz band its own name, for example adding 2G to the end. Connect your phone to that 2.4 GHz network, run the robot setup, then switch the router back afterwards if you like; many robots stay connected. Some routers and mesh systems offer a temporary 2.4 GHz only or IoT mode for exactly this. Check your router's help pages, as menus differ by provider.

[See robot vacuums for small flats](https://dockandmop.co.uk/best/best-robot-vacuum-for-small-flats)

## Common causes at a glance

If the quick checks and the 2.4 GHz fix did not work, use the table to narrow it down.

| Symptom | Likely cause | What to try |
| --- | --- | --- |
| App cannot find the robot | Phone location, Bluetooth or local network permission off | Allow the permissions in phone settings and retry |
| Fails at the network step | Phone on 5 GHz or bands combined under one name | Split or rename the bands and join 2.4 GHz |
| Password rejected | Typing error or unusual characters | Re-enter carefully; try a simpler password on a guest network |
| Connects then drops in some rooms | Weak signal far from the router | Move the dock nearer the router or add a mesh point |
| Will not join a new router | WPA3-only security | Set WPA2/WPA3 mixed mode or WPA2 for the 2.4 GHz band |
| Still fails after all checks | Old Wi-Fi details stored on the robot | Reset the robot's Wi-Fi and run setup again |

Robot vacuum Wi-Fi problems and fixes

## Router settings: distance, security and guest networks

Signal strength matters both during setup and day to day. Do the setup near the router, then place the dock where the signal is reasonable; a dock in a far corner behind thick walls may drop offline. In a larger home, a mesh system or extender can help, as long as it offers 2.4 GHz.

Security type is another common cause. Some newer routers can be set to WPA3 only, and many robot vacuums support only WPA2. Setting the 2.4 GHz band to WPA2/WPA3 mixed or transitional mode usually solves it. Hidden networks, MAC address filtering and very long or unusual network names can also block setup. A guest network can be a clean place to test, but some guest networks isolate devices from each other, which can stop the app reaching the robot locally.

## Reset the robot's Wi-Fi and try again

If the robot was connected to an old router, or setup failed part way, it may be holding stale network details. Most robots have a Wi-Fi reset, often done by holding one or two buttons together for several seconds until the robot speaks or a Wi-Fi light flashes. The exact buttons and timing vary by brand and model, so check your manual or the maker's app, which usually shows the steps during setup.

A Wi-Fi reset is different from a full factory reset, which also wipes maps and settings. Try the Wi-Fi reset first. Our guide on [how to reset a robot vacuum](https://dockandmop.co.uk/blog/how-to-reset-a-robot-vacuum) explains the difference. If the robot still will not connect after a reset and all the router changes, contact the maker's support, as the Wi-Fi module may be faulty. Remember most robots can still clean without Wi-Fi using the buttons on top; see [do robot vacuums need Wi-Fi](https://dockandmop.co.uk/blog/do-robot-vacuums-need-wifi). For new buyers, our [Eufy robot vacuums compared](https://dockandmop.co.uk/best/eufy-robot-vacuums-compared) and [best robot vacuum and mop](https://dockandmop.co.uk/best/best-robot-vacuum-and-mop) guides list connectivity details.

Note: Only change router settings you are comfortable with, and note the original settings first so you can put them back. Do not open the robot or dock to look at the Wi-Fi module; internal electrical repairs, and anything involving the lithium-ion battery, belong with the maker's service or a qualified repairer.

## Frequently asked questions

**Why won't my Shark robot vacuum connect to Wi-Fi?** The most common reason is a router that combines 2.4 GHz and 5 GHz under one name. Give the 2.4 GHz band its own name, connect your phone to it, and run setup again in the SharkClean app with location and Bluetooth on.

**Does a Roborock need 2.4 GHz Wi-Fi?** Many Roborock models connect on 2.4 GHz, and some newer ones also support 5 GHz. Check the specification for your model; if in doubt, set up on a 2.4 GHz network.

**My Eufy RoboVac will not connect. What should I try?** Update the eufy Clean app, allow location and Bluetooth, join a 2.4 GHz network, then reset the robot's Wi-Fi following the steps in the app or manual for your model.

**Why does my Dreame keep failing at the last step of setup?** Often the phone has switched to 5 GHz or the router is using WPA3 only. Split the bands and set WPA2 or mixed mode for 2.4 GHz, then try again close to the router.

## Buying guides on this topic

- https://dockandmop.co.uk/best/best-robot-vacuum-for-small-flats
- https://dockandmop.co.uk/best/eufy-robot-vacuums-compared
- https://dockandmop.co.uk/best/best-robot-vacuum-and-mop