Dexcom G5 MOBILE User Manual page 342

Precaution
Do: Enter the exact BG value displayed on your BG meter within five minutes of a
carefully performed fingerstick measurement.
Why: Entering the wrong BG values, or waiting more than five minutes before entry,
might affect sensor accuracy.
Consequences: Missing a severe low or high blood glucose event or making a
treatment decision that results in injury.
Precaution
Don't: Never prevent communication between transmitter and display devices.
Do: Keep smart device and receiver within 20 feet of transmitter and away from
obstructions.
Why: If your transmitter and display device(s) are more than 20 feet apart or are
separated by an obstruction, they might not communicate.
Types of obstruction differ and not all types have been tested. Obstructions can include
water, walls, metal, etc.
Water (for example, while swimming, surfing, bathing, etc.) can severely limit
communication range.
Consequences: Missing a severe low or high blood glucose event or making a
treatment decision that results in injury.
Dexcom G5 Mobile System User Guide
Troubleshooting
340