Technician helping fix Tuya not discovering devices in Smart Life app

Steve H.

Expert ★★★★★ 27,853 satisfied customers

Specialities: Mesh Wi-Fi nodes showing online while nearby devices disconnect, roaming behavior, backhaul checks, signal overlap, firmware and app-related network changes.

Why a mesh node can look online while nearby devices keep disconnecting

Technician avatar Technician
Before we assume the mesh node is bad, what changed around the time this started? A firmware update, moving a node, a new modem, or even renaming the Wi-Fi can change how devices roam.

Let’s start with the safest checks first. I don’t want you to try something that could make it worse.
Customer
It started a few days ago after the mesh app updated. The node says connected, but my phone and tablet near that node keep dropping Wi-Fi.
Technician avatar Technician
That timing matters. When the app or firmware changes, the node can still appear online while roaming rules, channel choice, or the backhaul path changes in the background.

When a device drops, does it lose internet completely, or does it jump back to the main router after a few seconds?
Customer
It usually drops for a moment and then comes back. Sometimes it reconnects on its own, sometimes I have to turn Wi-Fi off and on.
Technician avatar Technician
That sounds more like a roaming or handoff problem than a full outage. The node may be connected to the system, but nearby devices may not be holding onto it correctly.

Safe question: did you move that mesh node recently, or is it now farther from the main router than before?
Customer
Yes, I moved it to the hallway last week because I thought it would cover more rooms.
Technician avatar Technician
That can explain it. A node can show as connected in the app even when its link back to the main unit is weaker than it looks. Then devices near that node see a strong local signal, but the path out to the internet is unstable.

I don’t want you changing advanced settings blindly. First, does the app show that node as having a strong connection, fair connection, or just “online” with no detail?
Customer
It mostly just says online. I don’t see a number, only that it is connected.
Technician avatar Technician
Understood. That can be misleading, because “online” does not always mean the node has a healthy backhaul.

Two calm checks help here:
• Do devices drop only near that one node, while other rooms work normally?
• If you stand a little closer to the main router, do the same phone and tablet become stable again?
Customer
Yes. The problem is mainly in that hallway and bedroom area. Closer to the main router, everything is fine.
Technician avatar Technician
That narrows it down well. We should think about three common reasons:
• the node is too far away or blocked, even though the app still shows connected
• the update changed roaming sensitivity or channel behavior
• devices are clinging to the wrong access point and then dropping during handoff

This is common after updates, but we should rule out risks before assuming it is software.
Customer
I was worried the node had failed. But it still has a light on it and the app does not show an error.
Technician avatar Technician
A failed node is possible, but not the first guess here. If the light is normal and the app still sees it, it may be working but placed in a weak relay position, or the devices nearby may be roaming poorly after the change.

Safest test: without resetting anything, could you move that node a bit closer to the main unit for a while and watch whether drops become less frequent?
Customer
I can do that. If moving it helps, does that mean it was just too far away?
Technician avatar Technician
It would strongly suggest the node-to-node link was the weak point, yes. Not necessarily broken hardware, just a placement issue or a changed environment.

One more thing: did the app enable anything new like automatic optimization, smart roaming, or preferred backhaul after the update?
Customer
I did notice something called optimization, and I think it was turned on automatically.
Technician avatar Technician
That fits the pattern. Features like that can change channels or roaming behavior to improve the network overall, but a few devices may react badly near one node.

Let’s avoid a full reset. A safer path is to observe one change at a time: node placement, then whether that optimization feature affects stability.
Customer
So I should not wipe the whole mesh system yet?
Technician avatar Technician
I would not start there. If the main router is fine and only devices near one satellite keep disconnecting, a factory reset can make the situation harder to compare.

I’d rather confirm whether this is placement, roaming, or a post-update setting before doing anything disruptive.
Customer
That helps. I can move the node, check the optimization setting, and watch whether devices still drop in that room.
Technician avatar Technician
Yes, and keep the test simple. Watch the same phone or tablet in the same spot so the result means something. If drops stop after moving the node, placement was likely the issue. If they continue only after the update features are active, that points more toward roaming or channel changes.
Customer
If it still happens after moving the node, is that when I should suspect firmware or the device itself?
Technician avatar Technician
That would be the next reasonable question, yes. Especially if several different devices drop near the same node, while the rest of the home stays normal. At that point, the node may still be “connected” in the app but not behaving well enough for real use.

You’re taking the right approach: safe checks first, no rushed resets, and one variable at a time.
Customer
Okay. I’ll test it that way first. This feels a lot less confusing now.

Accepted fix: what to check first

When a mesh node shows connected but devices near it keep dropping off, the accepted first checks are to confirm whether the issue is limited to one node area, review what changed recently, and test the node from a slightly closer position to the main router. It also helps to look for app or firmware features that changed roaming, channel selection, or optimization behavior. If several devices disconnect only near that node, treat it as a handoff or backhaul diagnosis first, not an automatic hardware failure. Save resets and major network changes for later, after safer comparisons have been observed.

What changed before the mesh node started acting like this

5 GHz Wi-Fi often has higher speed, but it also has a shorter range and can be more sensitive to walls, TV cabinets, and nearby interference. New routers may also use DFS channels or wide channel widths (like 160 MHz) that work great for some devices but cause dropouts for others. If your network uses one Wi-Fi name for both bands, band steering can move a streaming device at the wrong time and trigger a “not connected” message. That’s why a simple compare test on 2.4 GHz is a useful diagnostic, not a step backward.

How to tell if this is roaming, placement, or a weak backhaul

Don’t judge by a one-minute test. A device can appear fine, then go offline during a longer video session when the connection is under steady load. After any single change, stream for a while and watch whether the device stays present in the router’s connected-devices list. If it drops and reconnects repeatedly, note whether the router changed channels or the device switched bands. This kind of observation keeps you from chasing the wrong cause.

Mesh node connected but devices near it keep dropping — safe checks

Start with safe checks that isolate the cause before changing advanced settings.

Helpful checks: compare 2.4 GHz vs 5 GHz stability, look for WPA3-only security, and note if 5 GHz is using auto/DFS channels or very wide channel widths. If your router combines both bands under one name, consider whether band steering is moving the device mid-stream. Make one small change at a time and give it enough time to observe. If you’re unsure, stop and take notes — guessing can make the network harder to troubleshoot.

Disclaimer: This information is AI-generated and intended for general guidance only. Do not open devices or attempt unsafe electrical work. For advice specific to your Tuya/Smart Life device model and router settings, please consult a verified expert on Whizz-Tech or the manufacturer’s support before making decisions.

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FAQ

Why did my mesh node start showing connected while devices near it keep dropping off?

This can happen after a firmware update, moving a node, or changing network settings in the app. The node may still be online, but its backhaul or roaming behavior may have changed. That can make nearby devices disconnect even though the node light looks normal.

Did this happen after an update or because I moved the node?

Either one can trigger it. Updates can change optimization, channel use, or roaming behavior. Moving the node can also weaken its link to the main router even if the app still says connected.

Is this a settings issue or hardware failure?

It is often a settings, placement, or handoff issue first. Hardware is more likely if the same problem continues after safe placement checks and affects several devices in the same area. A normal status light does not always rule out a weak node-to-node link.

Can this be checked safely at home?

Yes. Start by watching whether the issue happens only near one node, then review recent changes and test placement without resetting the whole system. One small change at a time is the safest way to learn what is really causing the drops.

Sources

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