Mammotion LUBA won't connect to the app: causes and fixes

A Mammotion LUBA that won't connect to the app is usually on a 5 GHz WiFi network, too far from the router or phone, missing app permissions, or needs its key reseated. Here are the fixes from Mammotion's help center and user manual.

Researched by Riley Hart · updated Oct 27, 2026 · How we research

Short answer

Turn LUBA off, unplug the key, plug it back in, turn it on and restart the app. For WiFi, LUBA only works on 2.4 GHz, so check your router band, move LUBA closer, or try a phone hotspot. For Bluetooth, stay within 10 ft (3 m) and allow Bluetooth, Location and local network access. If it still will not connect, a factory reset helps but erases the map.

Find your code

What you see	Likely cause	Fix
App cannot find LUBA over Bluetooth	Key or app glitch	Turn LUBA off, unplug and reinsert the key, turn it on and restart the app.
Bluetooth still fails	Unclear if LUBA is broadcasting	Android: check Bluetooth settings for Luba. iPhone: use BLE Scanner filtered to Luba. If it shows, LUBA is fine.
Setup will not start	Phone too far or permissions missing	Stay within 3 m (10 ft) and allow Bluetooth, Location and local network access.
LUBA will not join WiFi	Router on 5 GHz only	Use a 2.4 GHz network. LUBA does not work on 5 GHz.
WiFi drops or fails at the lawn	Distance or obstacles to the router	Move LUBA closer to the router, especially for firmware updates.
Will not join home WiFi or hotspot	Key needs reseating	Turn off, remove the key from the rear, reinsert it, turn on.
Works over Bluetooth but not remotely	No WiFi or 4G link	Remote start, pause, recharge and settings need WiFi or 4G.
4G not active	Built in SIM did not activate	In the app go to Status Bar, 4G Status, Activate.
Firmware update will not start	Update needs both Bluetooth and WiFi	Connect both, with a stable network.
Turns on but never connects	Software state stuck	Factory reset: hold Home, Grass and START, then hold Power over 5 seconds until it beeps. Redraw the map.

From Mammotion's help center connection and reset articles and the LUBA mini 2 AWD manual, checked October 27, 2026.

Still broken?Repair or replace

If the same code comes back after the fix, contact Mammotion support first, especially under warranty. Out of warranty, compare the repair quote with a new robot's price and 3 year cost.

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1. Reseat the key and restart

Mammotion's first fix for both Bluetooth and WiFi problems is the key at the back of LUBA. Turn LUBA off, unplug the key, plug it back in and turn LUBA on. Then close and reopen the app and try again.

2. Fix Bluetooth

Keep your phone within 10 ft (3 m) of the mower during setup, and allow the app Bluetooth, Location and local network access. To check whether LUBA itself is broadcasting:

Android: open Settings, Bluetooth, turn LUBA on and look for a device named Luba.
iPhone: install BLE Scanner from the App Store, go to Menu, Filter, enter Luba and turn the filter on, then look for Luba on the main screen.
If Luba shows in the list, Mammotion says the problem is likely not the mower, so look at the phone or app.

3. Fix WiFi and 4G

LUBA only connects to 2.4 GHz WiFi. Confirm your router broadcasts 2.4 GHz, not just 5 GHz. Move LUBA closer to the router, since distance and walls block the link, and do firmware updates near it. Try your phone's hotspot to rule out the router. If LUBA will not join either network, remove and reinsert the key.

On 4G models such as LUBA mini 2 AWD, the built in SIM activates on its own. If it did not, go to Status Bar, 4G Status, Activate in the app. Mammotion still recommends WiFi for best performance.

4. Know which link you need

Mammotion says Bluetooth alone is enough to draw or edit the map, make no go zones and channels, and drive LUBA by hand. WiFi or 4G is needed to check status remotely, start, pause or end a job, send LUBA to recharge and change settings away from the mower. Setup, log uploads and firmware updates need both Bluetooth and WiFi.

5. Factory reset and support

If LUBA turns on but still will not connect, try a factory reset. Hold Home, Grass and START together, then also hold Power for more than 5 seconds. Release when LUBA beeps continuously; the side LEDs stay on for up to a minute. The reset erases your map, so you will need to map again. If it works, send a log from the app to Mammotion support under Settings, Upload Logs.

If nothing works, contact Mammotion support with your serial number and logs. A failed Bluetooth or WiFi module is a repair, not a reason to replace the mower. These fixes come from Mammotion's support pages; we do not test mowers hands on.

Mammotion LUBA models in our rankings

Lawn · Mammotion LUBA 3 AWD Best for steep lawns under trees $2,3997.5/10 Check price →Full profile

Lawn · Mammotion LUBA mini 2 AWD Best for tight, complex small yards $1,7997.8/10 Check price →Full profile

Questions people ask

Does Mammotion LUBA work with 5 GHz WiFi?

No. Mammotion says LUBA only works on 2.4 GHz networks.

How do I reset LUBA when it will not connect?

Hold Home, Grass and START, then also hold Power for over 5 seconds until it beeps. This erases the map.

Do I need WiFi to use LUBA?

Bluetooth is enough for mapping, no go zones and manual driving. WiFi or 4G is needed for remote control, and both are needed for setup and firmware updates.

Why won't my LUBA 4G activate?

If the built in SIM did not activate during pairing, go to Status Bar, 4G Status, Activate in the app.

What is the key on a Mammotion LUBA for?

It is a removable security key at the rear. Reseating it is Mammotion's first fix for Bluetooth and WiFi problems.