Positioning and connectivity are the least understood specs on any product page, and the ones most likely to make a device useless for a given situation.
Two different jobs, constantly confused on product pages.
Two different jobs get muddled on every product page. Positioning is how a device works out where it is. Connectivity is how it tells you. A device can be excellent at one and useless at the other.
1. How it works out where it is
Method
Typical accuracy
Works indoors?
What it means for you
GNSS (GPS, Galileo, GLONASS)
3–10 m outdoors
Poorly or not at all
The default outdoors. Drifts badly near tall buildings, and a cold fix can take minutes.
Wi-Fi positioning
Room to building level
Yes — this is the indoor answer
The device scans nearby Wi-Fi networks and matches them against a global database. It does not join those networks.
Cell tower ID
100 m to several km
Yes
Coarse fallback. Enough to say which neighborhood, rarely which street.
Crowdsourced mesh
Where a passing device saw it
Where other people are
Apple Find My, Amazon Sidewalk, Tile. No position at all until someone else walks past.
How Wi-Fi positioning actually works — and what it collects
This is the least understood technology in wearables, and the one doing most of the work whenever a device reports a location indoors.
The device scans for nearby Wi-Fi access points and records their MAC addresses — the unique hardware identifiers your router and your neighbors' routers broadcast constantly. It sends that list to its back-end platform, which queries a geolocation API. Those providers — Google, Skyhook (now part of Qualcomm), Combain and others — maintain databases mapping billions of access points to physical coordinates. Skyhook's network alone covered over 4.5 billion geolocated Wi-Fi hotspots and 180 million cell IDs.
The device never connects to those networks. It doesn't need a password and doesn't use them for data. It's listening, not joining.
Two things follow that are worth knowing:
It's why indoor tracking works at all. A tracker that reports a position inside a care home or a school is almost certainly doing this, not using GPS.
It sends a list of your neighbors' networks to a third party. Not your data exactly — but a record of the wireless environment around a child or an older adult, leaving the device and going to a geolocation provider most buyers have never heard of. Privacy policies rarely mention it.
A practical consequence: Wi-Fi positioning degrades where there are few networks to see. Rural areas, large open sites and new-build districts can leave a device falling back to cell ID and a location accurate to a kilometer.
2. How it sends that back to you
Technology
Data rate
Battery
Best suited to
What it means for you
Bluetooth LE Outside our scope
Short range
Excellent
Phone-tethered devices only
Needs a phone within about 10 meters to do anything. A device that relies on this can't report from anywhere on its own — which is why ViaMondo doesn't cover BLE-only wearables. Listed here so you can recognize one.
Crowdsourced mesh Outside our scope
Tiny payloads
Excellent — months
Item finding
Apple Find My, Amazon Sidewalk. Depends on strangers' phones passing by. No live tracking, no SOS, no independent connection.
NB-IoT
≤ 250 kbps
Longest of all
Infrequent, low-data reporting
Superb battery, weak for mobility and live tracking. Wrong for wandering alerts.
LTE-M (Cat-M1)
≤ 1 Mbps
Balanced
Wearable health, asset tracking
The sweet spot for most trackers — handles movement and real-time updates.
4G LTE (Cat-1 / Cat-4)
10–150 Mbps
Heaviest draw
Voice and video calling
What kids' calling watches use. Full LTE is why they need charging nightly.
5G RedCap
150 / 50 Mbps
Moderate
Data-rich wearables
Emerging. Omdia forecasts ~1bn connections by 2030.
