Building Bluetooth Low Energy (BLE) connectivity for a medical device companion app is relatively straightforward when everything goes right. The harder engineering problem begins when the connection drops. A wearable moves out of range.

Source: [Dev.to](https://dev.to/rank_alchemy_5ad282cec75d/how-should-developers-handle-ble-reconnection-in-medical-device-apps-fj3)

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