Smart home · Checked September 2026

WiFiXpert Compatibility Score — TP-Link Tapo smart plug

Name: TP-Link Tapo smart plug
Brand: TP-Link

Cheap and useful, but 2.4 GHz only — which trips up anyone with a single combined Wi-Fi name.

54out of 100

Fussy — expect some setup pain

Eight checks, same for every device. The eight numbers below add up to 54.

The eight checks

What we check	Rating	Points
Works on 2.4 GHz The only band it supports.	Excellent	14/14
Works on 5 GHz Won't join a 5 GHz network at all, which is the usual cause of failed setup.	Not supported	0/14
Modern Wi-Fi security Needs the router set to an older-compatible security mode on some networks.	Older security only	6/12
Happy on mesh Wi-Fi Fine on mesh, as long as the setup phase finds it.	Good	12/16
Works on a guest network Cannot be set up on a guest network.	Poor	1/8
Survives a plug-in extender Often the easiest way to reach a plug in a garage or shed.	Works	6/8
Doesn't depend on chatty discovery The app finds the plug on your local network during setup.	Moderate dependency	10/16
Easy to fix when it goes wrong Hold the button to reset and start again, though you'll redo the schedules.	Easy	5/12
WiFiXpert Compatibility Score		54/100

What usually goes wrong

"Won't connect during setup" because the phone is sitting on the faster 5 GHz band.

Free things to try, in this order

1
During setup, turn 5 GHz off on your phone or temporarily switch the phone to the 2.4 GHz network name.
2
Stand next to the router while pairing, then move the plug to where you want it.
3
If your router has separate band names, use the one ending in 2.4G.

Before you buy anything

Never for this. It's a setup step, not a hardware fault.

Get help with this Check it against my router

Answers about this gadget

TP-Link Tapo smart plug — weak wi-fi in one room

What it needs from your network

The simplest Wi-Fi client in the house, and the fussiest about which network it can see.

Bands it uses: 2.4 GHz only on most models. It will not see a Wi-Fi name that is 5 GHz only, and setup fails silently if your phone is on the 5 GHz half of a split network.
How it's found: Cloud for control; local discovery for the app to find it during setup.
Background discovery traffic: Moderate during setup, low afterwards.
On a guest network: Setup fails on guest networks.
On a separate gadget network: The best candidate in the house for a separate IoT network.

Getting it set up

• Plug it in near the router first.
• Your phone must be on 2.4 GHz for setup on most brands.
• Stand next to your router while you set it up, then move the gadget to where it lives.
• Put your phone on the 2.4 GHz network name for the setup, or use one name for both bands so the phone can follow.
• If your router splits bands into two names, turn the 5 GHz one off for five minutes rather than fighting it.
• Turn mobile data off on your phone during setup — some apps quietly use it and never find the gadget.

With mesh Wi-Fi

• Plugs behind a fridge or washing machine sit in a metal shadow. Move the plug, not the mesh.

With particular broadband providers

Sky: Sky's hub uses one name for both bands, which usually helps — but the phone can still land on 5 GHz during setup.
What to do: Stand next to the hub during setup, or briefly disable 5 GHz.
EE: EE hubs support a large number of devices, but the default address pool can fill in a heavily automated home.
What to do: Widen the address pool in the hub settings or remove devices you no longer use.

Network notes checked September 2026.

Problem guides for this gadget

Where these ratings come from

TP-Link — Tapo device won't connect
WiFiXpert cases and community reports for this device, checked September 2026.

Nobody pays to appear in this index, and no shopping link changes a score. If a manufacturer changes something that affects a rating, tell us and we'll recheck it.