An accessory that cuts out and reconnects is usually Bluetooth interference, a weak connection profile or low battery, not a hardware defect. For Apple Watch heart-rate and health sensors, first clean/dry the back, wear snugly and compare a supported resting measurement.
What this covers
- Apple Watch heart-rate and health sensors with this exact failure state
- Diagnosis across fit/skin and feature eligibility versus permission, motion and sensor hardware
What it does not cover
Try in this order
0 of 4 completedCapture the exact failure state
ReversibleNote the accessory's distance from the host, nearby 2.4 GHz devices, and its remaining battery percentage. Expected behavior: record eligible measurements through clean skin contact under supported conditions.
Isolate the component boundary
ReversibleClean/dry the back, wear snugly and compare a supported resting measurement. Test at close range with other Bluetooth devices turned off, and with the accessory freshly charged. Boundary to separate: fit/skin and feature eligibility versus permission, motion and sensor hardware.
Correct only the proven cause
ReversibleCorrect fit/permissions, update or service persistent sensor failure. Move interfering devices away, forget and re-pair the connection, or replace a degraded battery.
Verify and stop safely
ReversibleRun the same activity that triggered the cutout for at least 20 minutes at normal range. Seek medical care for symptoms regardless of wearable readings.
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