Introduction
The GameSir G8 Plus MFi Phone Controller is designed to enhance your mobile gaming experience on both Apple (MFi certified) and Android (USB-C) devices. It features console-grade ergonomics, Hall Effect technology for precision, and extensive customization options to provide a comfortable and responsive gaming session.

Image: GameSir G8 Plus MFi Phone Controller with a smartphone inserted, showcasing its design and compatibility.
Setup
Device Compatibility
The GameSir G8 Plus MFi is officially MFi certified for seamless gaming on iPhone and iPad. It is also compatible with Android devices featuring a USB-C port. The controller supports devices with an adjustable stretch range from 125mm to 215mm, accommodating various smartphones and even the iPad mini.

Image: The GameSir G8 Plus MFi Controller shown with an iPhone and iPad Mini, emphasizing its MFi certification and broad compatibility.
Connecting Your Device
- Gently pull the right side of the controller to extend its arms.
- Align your smartphone's USB-C port with the movable Type-C connector on the controller. The movable connector ensures a secure, low-latency connection.
- Insert your device into the USB-C connector and allow the controller arms to retract, securing your phone in place.
- For optimal fit, the controller includes swappable silicone pads. Adjust these pads as needed to protect your device and ensure a snug fit, especially with different phone thicknesses or camera bumps.

Image: Close-up of the controller's flexible USB-C port and swappable silicone pads, designed for secure device connection.
Customization
The G8 Plus MFi features a magnetic detachable faceplate, allowing you to easily swap ABXY layouts or thumbsticks for your preferred configuration. This enables personalized control setups for various game genres.

Image: The controller's magnetic detachable faceplate and interchangeable components for personalized setup.
Operating Instructions
Controls and Features
- GameSir Hall Effect Sticks: These sticks provide pinpoint accuracy and smooth 360° control, utilizing non-contact magnetic sensors for anti-stick drift performance and durability up to 5 million cycles.
- Hall Effect Analog Triggers: Precision-tuned analog triggers offer unparalleled smoothness and responsiveness. Activate hair trigger mode by pressing M+LT/RT for faster input in competitive games.
- Responsive Mechanical Buttons: The controller is equipped with durable membrane ABXY buttons, rated for up to 2 million clicks, and a mechanical D-pad for precise input.
- Remappable Back Buttons: Two additional back buttons provide extra input options and can be customized for enhanced control.
- Pass-Through Charging: The movable Type-C connector supports pass-through charging, allowing you to power your device during extended gaming sessions without interruption.
- 3.5mm Audio Jack: A built-in 3.5mm audio jack allows for direct headphone connection, ensuring immersive audio without needing a separate adapter.
- Asymmetric Motors for Immersive Vibration: Dual motors in the grip deliver both strong and subtle vibrations, enhancing tactile feedback for a more immersive gaming experience.

Image: Hall Effect sticks and triggers for precise and responsive control.

Image: Overview of key features including back buttons, durable face buttons, audio jack, and vibration motors.
Software Customization
Download the official GameSir app to unlock advanced customization options. Through the app, you can perform firmware upgrades, adjust stick and trigger dead zones, customize vibration intensity, test buttons, and manage game profiles.

Image: The GameSir app interface for controller customization and settings management.
Maintenance
To ensure the longevity and optimal performance of your GameSir G8 Plus MFi controller, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the controller's surface. Avoid using harsh chemicals or abrasive materials that could damage the finish or internal components.
- Storage: Store the controller in a cool, dry place away from direct sunlight and extreme temperatures. When not in use, ensure the controller is retracted to its compact form to protect the internal mechanism.
- Connector Care: Handle the USB-C connector with care. Avoid forcing it into your device or applying excessive pressure, which could cause damage.
Troubleshooting
If you encounter any issues with your GameSir G8 Plus MFi controller, please refer to the following common solutions:
- Connection Issues: Ensure your device's USB-C port is clean and free of debris. Verify that the controller's USB-C connector is fully inserted into your device. Restarting your device and reconnecting the controller can often resolve connectivity problems.
- Button/Stick Unresponsiveness: Check the GameSir app for any firmware updates. Calibrate the sticks and triggers through the app. Ensure no physical obstructions are preventing button presses or stick movement.
- Charging Problems: Confirm that the pass-through charging cable is securely connected to both the controller and a power source. Test with a different USB-C charging cable if necessary.
- Vibration Issues: Verify that vibration is enabled in your game settings and within the GameSir app.
For further assistance, please contact GameSir customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | GameSir |
| Model Name | GameSir G8 MFI |
| Connectivity Technology | USB-C Wired |
| Operating System Compatibility | Android, iOS |
| Special Feature | Ergonomic Design, Hall Effect Sticks, Hall Effect Analog Triggers, Remappable Back Buttons, Pass-Through Charging, 3.5mm Audio Jack, Swappable Components |
| Product Dimensions | 0.39 x 0.39 x 0.39 inches |
| Item Weight | 1.39 pounds |
| Max Compatible Length | 215mm |
Warranty and Support
GameSir offers a 12-month replacement service for this product. If you encounter any issues, please contact GameSir customer support via Amazon. They aim to respond within 24 hours and provide solutions for product-related problems.
For firmware updates and advanced customization, download the official GameSir app.
Official Product Video
Video: Official overview of the GameSir G8 Plus MFi Phone Controller, demonstrating its features and compatibility with iPhone and Android devices.





