Using a baby monitor with no Wi-Fi
Most baby monitor apps are Wi-Fi apps: no router, no monitor. Slumbi has a second path that needs no network of any kind — and a third for when you are not home at all.
Three ways to reach the nursery
Slumbi does not pick one transport and hope. It keeps track of every way the two phones can currently see each other and moves between them without asking:
| Link | What you get | Needs |
|---|---|---|
| Wi-Fi | Full-quality video and sound, straight between the two phones | Both phones on the same network |
| Bluetooth | A smaller, lower-frame-rate picture plus clear audio, talk-back and alerts | Nothing — the phones talk directly |
| Internet | Full stream from anywhere | Both phones online; this is the paid tier |
What the Bluetooth link actually gives you
It is a real video link, not an audio-only downgrade — but it is honest about its size. Bluetooth carries a narrow picture at roughly ten frames a second alongside compressed audio. You can see whether your baby is lying down or standing up, whether the eyes are open, whether an arm is stuck through the bars. You will not read the pattern on the blanket.
Everything that matters at night survives the drop: the noise meter, cry detection, motion alerts, and talk-back so you can say something without walking in.
Range is Bluetooth range. Roughly a floor of a normal house, less through a thick wall. Wi-Fi covers a whole home; Bluetooth covers the part of it you are actually sleeping in. That is the trade, and it is why Slumbi prefers Wi-Fi whenever Wi-Fi exists.
When the fallback fires
You do not switch anything. If the router reboots at 03:00, or the network drops off, or the nursery phone simply cannot see the Wi-Fi any more, the parent side moves down to whatever link is still there. When Wi-Fi comes back, it climbs again — Bluetooth is treated as a stepping stone, never a destination.
And if no link can be re-established at all, Slumbi says so. It does not leave a frozen last frame on screen pretending everything is fine; a monitor that silently stops watching is the one failure it will always wake you for.
When you have no Wi-Fi at all
Some houses do not have it, some rooms do not reach it, and rentals and hotels often have networks that block devices from seeing each other. In all of those cases the Bluetooth path is not a fallback but the normal mode: two phones, no infrastructure, nothing to configure. It is free, and it does not need either phone to be online.
The one thing you lose without any internet is the remote path — you have to be within Bluetooth range. For a nursery down the hall, that is the situation anyway.
A router setting worth knowing about
If both phones are on Wi-Fi and still cannot find each other, the usual culprit is client isolation (sometimes "AP isolation", and it is on by default on most guest networks). It stops devices on the same network from talking, which is exactly what local discovery needs. Move both phones off the guest network, or leave isolation on and use the Bluetooth link, which is unaffected.