Sensor Connection Issues – Troubleshooting Guide – Qingmu

Questions This Article Can Answer

ID	Question
Q1	What is a connection issue?
Q2	What are the symptoms of a connection issue?
Q3	What are the similarities and differences between connection issues and device failure?
Q4	What troubleshooting steps should be followed for connection issues?

Q1: Definition of Connection Issue

A connection issue occurs when the Bluetooth connection between the sensor and the mobile app is interrupted due to various factors, preventing the app from receiving data from the sensor.

Q2: Symptoms of Connection Issues

Connection issues fall into two scenarios:

Scenario A – Never Successfully Connected

The customer needs to scan a QR code or manually enter a Bluetooth pairing code to connect.
When a connection problem occurs:
- The scan fails with a "Connection failed" message, OR
- There is no error message, but the app does not show the post-connection success screen (i.e., does not enter the warm-up phase).

Scenario B – Previously Connected but Disconnected

The app displays "Searching" or "Signal loss".
Alternatively, no message appears, but data does not update in real time.

Q3: Connection Issues vs. Device Failure – Similarities and Differences

Similarity:
In both cases, the customer can no longer see real‑time data. Customers may describe both situations as "my device disconnected."

Difference:

Device failure triggers an in‑app pop‑up message stating "Sensor Failed."
If the customer mentions an error message, it refers to device failure, not a connection issue.

Q4: Troubleshooting Steps for Connection Issues

Perform the following steps in order. After each step, check whether the issue is resolved before proceeding to the next.

Part 1: Quick Fixes

Step	Action	Details
1	Restart Your Phone	Restart your device to reset any potential glitches or conflicts that may be interfering with Bluetooth or app performance.
2	Reinstall the App	Delete the app from your device and download it again from the official app store. Important: During reinstallation, when the system prompts for app permissions, click "Allow" for all permissions.
3	Check Proximity	Keep the sensor and your phone within 6 meters (about 20 feet) of each other for optimal Bluetooth connectivity.

Part 2: Pre‑Connection Checklist

Before attempting to connect again, verify all the following conditions are met:

Category	Requirement
App Version	You have downloaded the correct app (Green color, English version)
App Updates	Your app is updated to the newest version
Sensor Placement	Apply the sensor on your arm before connecting to the phone
Bluetooth Range	Keep the sensor and your phone within 6 meters
App Permissions	Authorized all functions of the app, especially Bluetooth, Camera, and Location
Storage Space	Ensure your device has enough free storage space
Manual Code Entry	If manually entering the sensor code, use all capital letters (pay attention to distinguishing 0 from O)
Internet Connection	Ensure you have a stable internet connection (Wi‑Fi or mobile data)
System Requirements	iOS 13.0 or later / Android 8.0 or later
Battery Level	Device battery > 20%

Instructions for AI Agent

Matching logic: If the customer reports any of the symptoms described in Q2, output the full response content (Q1 through Q4) as written.

Output rules:

Do not summarize, omit, or rephrase any part of this article.
Do not add greetings, apologies, or extra explanations.
Output the entire article content from "Questions This Article Can Answer" through the end of Part 2.

Important distinction:

If the customer mentions an error pop‑up ("Sensor Failed"), do not use this article. That is a device failure issue, not a connection issue.