EFR Connect
Silicon Laboratories Business
Silicon Labs EFR Connect Android App
- Rating
- 3.9
- 366 ratings
- Downloads
- 209K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 12
- 2026 · v3.3.2
Screenshots
About EFR Connect
The Silicon Labs EFR Connect app utilizes the Bluetooth adapter on your phone/tablet to scan, connect and interact with BLE devices.
The app is divided into two main functional areas, the demo and the develop view.
The demo view lists a number of demos that are meant for quickly testing some of the sample apps in the Silicon Labs GSDK. The currently supported demos are:
- Health Thermometer demo: Connects to an EFR32/BGM device running the soc-thermometer sample application from the Bluetooth SDK and displays the temperature read from the SI7021 sensor on the WSTK mainboard.
- Connected Lighting DMP demo: Leverages the DMP sample apps to control a DMP light node from both a mobile app as well as the protocol specific switch node (Zigbee, proprietary) while keeping the light status in sync across all devices.
- Range Test demo: Allows visualizing the RSSI and other RF performance data on the mobile phone while running Range Test sample application on a pair of Silicon Labs radio boards.
The develop view contains functionalities focused on helping developers create and troubleshoot their Bluetooth applications based on EFR32/BGM devices. The currently supported functionalities are:
- Bluetooth Browser: This is a generic and powerful tool that allows you to explore the BLE devices around you. Key features of the browser include:
* Scan and sort results with rich data set
* Ability to favorite devices on the scan list so that they surface to the top
* Advanced filtering options to quickly identify the devices you want to find
* Option to save filters for later use
* Support for multiple connections
* Support for Bluetooth 5 advertising extensions
* Ability to rename services/characteristics with 128-bit UUIDs (mappings dictionary)
* Over-the-air (OTA) device firmware upgrade (DFU) with both reliable and speed modes
* Configurable MTU and connection interval
* Support for all GATT operations
- Bluetooth Advertiser: Allows you to create multiple advertisement sets and enable them in parallel
* Supports legacy and extended advertising
* Configurable advertisement interval, TX Power, primary/secondary PHYs
* Ability to manually start/stop advertisement, or stop based on time/event limit
* Support for multiple AD types
The app is divided into two main functional areas, the demo and the develop view.
The demo view lists a number of demos that are meant for quickly testing some of the sample apps in the Silicon Labs GSDK. The currently supported demos are:
- Health Thermometer demo: Connects to an EFR32/BGM device running the soc-thermometer sample application from the Bluetooth SDK and displays the temperature read from the SI7021 sensor on the WSTK mainboard.
- Connected Lighting DMP demo: Leverages the DMP sample apps to control a DMP light node from both a mobile app as well as the protocol specific switch node (Zigbee, proprietary) while keeping the light status in sync across all devices.
- Range Test demo: Allows visualizing the RSSI and other RF performance data on the mobile phone while running Range Test sample application on a pair of Silicon Labs radio boards.
The develop view contains functionalities focused on helping developers create and troubleshoot their Bluetooth applications based on EFR32/BGM devices. The currently supported functionalities are:
- Bluetooth Browser: This is a generic and powerful tool that allows you to explore the BLE devices around you. Key features of the browser include:
* Scan and sort results with rich data set
* Ability to favorite devices on the scan list so that they surface to the top
* Advanced filtering options to quickly identify the devices you want to find
* Option to save filters for later use
* Support for multiple connections
* Support for Bluetooth 5 advertising extensions
* Ability to rename services/characteristics with 128-bit UUIDs (mappings dictionary)
* Over-the-air (OTA) device firmware upgrade (DFU) with both reliable and speed modes
* Configurable MTU and connection interval
* Support for all GATT operations
- Bluetooth Advertiser: Allows you to create multiple advertisement sets and enable them in parallel
* Supports legacy and extended advertising
* Configurable advertisement interval, TX Power, primary/secondary PHYs
* Ability to manually start/stop advertisement, or stop based on time/event limit
* Support for multiple AD types
What’s new
Version 3.3.2 · Updated October 12, 2026
- Bug fixes - Underlying Bluetooth changes.
User reviews
Looks like a fascinating learning opportunity. I wish i understood more!
Nice new features!
Version 1.4.1 is working greatly
Got updated two days ago, ble device-name characteristic show different name from what app show, it keeps showing older name like OTA. rest seems good.
Frequently asked questions
What is EFR Connect?
EFR Connect is an app that uses the Bluetooth adapter on your phone/tablet to scan, connect, and interact with BLE devices.
What are the main functional areas of the EFR Connect app?
The app is divided into two main functional areas: the demo view and the develop view.
What demos are supported in the demo view of the EFR Connect app?
The currently supported demos in the demo view are the Health Thermometer demo, Connected Lighting DMP demo, and Range Test demo.
What is the purpose of the develop view in the EFR Connect app?
The develop view contains functionalities focused on helping developers create and troubleshoot their Bluetooth applications based on EFR32/BGM devices.
What functionalities are supported in the develop view of the EFR Connect app?
The currently supported functionalities in the develop view are the Bluetooth Browser and Bluetooth Advertiser.
What features are available in the Bluetooth Browser of the EFR Connect app?
The Bluetooth Browser allows you to explore BLE devices around you and offers features such as scan and sort results, favorite devices, advanced filtering options, saving filters, support for multiple connections, support for Bluetooth 5 advertising extensions, renaming services/characteristics, OTA device firmware upgrade, configurable MTU and connection interval, and support for all GATT operations.
What can you do with the Bluetooth Advertiser in the EFR Connect app?
The Bluetooth Advertiser allows you to create and enable multiple advertisement sets in parallel, supports legacy and extended advertising, offers configurable advertisement interval, TX Power, primary/secondary PHYs, ability to manually start/stop advertisement or stop based on time/event limit, and support for multiple AD types.
Alternatives to EFR Connect
Looking for apps like EFR Connect? Here are 4 similar Android apps on Google Play. The highest rated is BLE Scanner (Connect & Notify) (4.9/5), and all 4 are free to download.
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