CGM features and fixes · Medtrum TouchCare Nano CGM

Medtrum TouchCare Nano CGM signal loss: what the maker says to do

LOST means the phone has had no signal from the transmitter for more than 10 minutes. The transmitter keeps recording, and the readings fill in when the connection comes back. (Medtrum UK user guide, p. 14; Medtrum UK user guide, p. 16; Medtrum UK user guide, p. 5; Medtrum)

What the maker says to do

1. Move the phone close to the transmitter.
2. Make sure Bluetooth is on.
3. Wait for the app to reconnect; missed readings are sent from the transmitter.

The Nano CGM is not FDA-cleared and the EasySense and EasyFollow apps are not in the US App Store, so these answers come from Medtrum's international (WW) and UK English pages and guides.

A call when readings stop

Glide sends every phone on the profile a lost signal banner after 30 minutes without a reading, and overnight it can call a phone number you verify (Premium). How the lost-signal call works.

More on the Medtrum TouchCare Nano CGM

• Follower app not updating
• Sensor error
• Warm-up
• Sensor failed early
• Alarms not sounding
• Follower not getting alerts
• Compatible phones

Signal loss on other CGMs

• Dexcom G6
• Dexcom G7
• Dexcom ONE+
• Dexcom Stelo
• FreeStyle Libre 2 and 2 Plus
• FreeStyle Libre 3 and 3 Plus
• Eversense 365
• Medtronic Simplera
• SIBIONICS GS1

Sources, quoted

• Medtrum UK user guide, p. 14: “LOST - Sensor signal has been lost for more than 10 minutes. Wait for a while.”
• Medtrum UK user guide, p. 16: “LOST SENSOR”
• Medtrum UK user guide, p. 16: “Move your smart device close to the Transmitter.”
• Medtrum UK user guide, p. 5: “Bluetooth: Available and turn on”
• Medtrum: “When your controller is out of range, readings are held in the transmitter and sent across once the connection recovers, so no sensor data is lost.”

Every quote is checked against its source page before each update of this site; last checked 2026-10-06. Makers change their apps; the source page is the authority when it differs.