1. Introduction
The Joso Phone Controller is a versatile mobile gaming accessory designed for both iPhone and Android devices. It features a built-in semiconductor cooling plate to prevent overheating during extended gameplay, customizable back buttons for advanced controls, and a long-lasting battery. This manual provides detailed instructions for setup, operation, and maintenance of your Joso Phone Controller.

Image: The Joso Phone Controller attached to a smartphone, showcasing its design and a game running on the screen.
2. Product Overview
2.1. What's in the Box
- Joso Phone Controller with Cooling Fan
- Type-C Charging Cable
- User Manual
2.2. Key Components

Image: A detailed diagram illustrating the various buttons and ports on the Joso Phone Controller, including L1, R1, joysticks, direction keys, Windows button, Share button, Menu button, Power button, Indicator Light, FN Light, R2, L2, M1, M2, USB-C Port, and Cable Clamp.
- L1/R1 Buttons: Top shoulder buttons.
- L2/R2 Triggers: Bottom shoulder triggers.
- Left/Right Joysticks (L3/R3 click): For movement and camera control. Can be clicked for additional functions.
- Directional Pad (D-Pad): For precise directional input.
- A/B/X/Y Buttons: Standard action buttons.
- Windows Button: Used for power on/off and cooler control.
- Share Button: For sharing content (functionality may vary by device/game).
- Menu Button: Access in-game menus or system functions.
- Power Button: Turns the controller on/off.
- Indicator Light: Shows connection status and battery level.
- FN Light: Function indicator light.
- M1/M2 Back Buttons: Customizable macro buttons with function locks.
- USB-C Port: For charging the controller.
- Cable Clamp: For managing the charging cable.
- Semiconductor Cooling Plate: Located at the center back, for active cooling.
3. Setup
3.1. Initial Charge
Before first use, fully charge the Joso Phone Controller. Connect the provided Type-C charging cable to the controller's USB-C port and a suitable power source (e.g., USB wall adapter, computer USB port). The indicator light will show charging status and turn off when fully charged. A full charge provides more than 18 hours of gaming time.
3.2. Attaching Your Phone
The controller supports smartphones with sizes between 136-184mm and phone cases up to 15mm thickness. Gently extend the controller's sides to fit your phone securely into the central cradle. Ensure the phone is centered and stable.

Image: The Joso Phone Controller demonstrating its compatibility with various phone models (iPhone 16/15/14/13/12/11 Series, Galaxy S24/S23/S22 Series, Google Pixel, Huawei, LG, OPPO, OnePlus, VIVO) and the Nintendo Switch, highlighting its universal fit and support for phones with cases up to 7.2 inches.
3.3. Bluetooth Pairing
Ensure the controller is off before initiating Bluetooth pairing.
- Turn on the controller by pressing the Power Button. The indicator light will begin to flash, indicating it's in pairing mode.
- On your smartphone, go to Bluetooth Settings.
- Search for available devices and select "Joso Controller" (or similar name) from the list.
- Once connected, the indicator light on the controller will become solid.
- For subsequent uses, the controller should automatically reconnect to the last paired device when powered on.
3.4. NS-Switch Connection
The controller supports Nintendo Switch. To switch ABXY key habit, press the 'R3' + 'Window' buttons simultaneously.
4. Operating Instructions
4.1. Cooling Fan Operation
The built-in semiconductor cooling plate helps prevent device overheating. To activate the cooler, long press the 'Window' button for 3 seconds. The cooling fan will start, and the LED light will cycle through 7 colors. The cooler will only work when the gamepad is powered on and turned on. The maximum cooling temperature can reach 18° Celsius.

Image: The Joso Phone Controller with a visual representation of its cooling technology, showing ice crystals and a semiconductor refrigeration radiator.

Image: A close-up of the Joso Phone Controller's cooling fan with 7-color LED light cycle, alongside icons indicating 10-15 hours playing time, 2-3 hours charging time, and 600 mAh battery capacity.
4.2. Macro Back Buttons (M1/M2)
The controller features two customizable back buttons (M1 and M2) that can be programmed without software. These buttons can be used for key mapping, setting Turbo mode, or editing macros to execute complex skills with a single press.

Image: The Joso Phone Controller showing the M1 and M2 back buttons and an illustration of how they can be programmed for complex in-game actions.
To prevent accidental presses during intense gameplay, you can press the key locks next to M1/M2 to lock their function.
4.3. Turbo Function
The manual Turbo function allows you to quickly execute complex moves and combos. To set Turbo mode: Hold down the desired function key, then press the 'Power' button. Setup is complete. This function is ideal for arcade or action games.

Image: The Joso Phone Controller highlighting its 3D joystick for ultra-low latency and precise aiming, shooting, moving, and switching angles, along with the manual Turbo function for quick combos.
4.4. Vibration Function
The wireless controller for Switch provides immersive vibration feedback. Note that it does not include 6-axis gyro functionality. Vibration intensity can be adjusted (High, Medium, Low, Stop). Default vibration intensity is medium. The vibration function only supports Switch and PC.
5. Compatibility
The Joso Phone Controller is designed for broad compatibility:
- Mobile Devices: Compatible with iPhone 16/15/14/13/12/11 Series, Galaxy S24/S23/S22 Series, and other Android 6.0+ phones.
- Operating Systems: Supports iOS and Android updates.
- Gaming Platforms: Supports most controller-supported games on App Store/Play Store, including Call of Duty, Warzone Mobile, Genshin Impact (iPhone only), Minecraft, and more.
- Note: PUBG is not supported. Some games may not support controller mode; verify game compatibility if unsure.
- Other Devices: Supports PC and Nintendo Switch.

Image: The Joso Phone Controller shown with a background of various mobile games and logos for App Store, Google Play, and Steam, indicating broad game support.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the controller. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the controller in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in use for extended periods.
- Cooling Plate: After using the radiator to cool down, a temperature difference may cause water droplets to appear on the radiator surface. This is a normal phenomenon and not a defect.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller does not turn on. | Low battery. | Charge the controller fully using the provided Type-C cable. |
| Unable to pair via Bluetooth. | Controller not in pairing mode; previously paired device interfering; Bluetooth interference. | Ensure controller is off before pairing. Turn on and wait for indicator light to flash. Turn off Bluetooth on other devices. Restart phone and controller. |
| Cooling fan not working. | Cooler not activated; controller not powered on. | Long press the 'Window' button for 3 seconds to activate. Ensure the controller is powered on and has sufficient battery. |
| Buttons/joysticks unresponsive in game. | Game does not support controllers; incorrect controller mode; connection issue. | Verify if the game supports external controllers. Re-pair the controller. Check if the controller is in the correct mode for your device (e.g., Switch mode). |
| Macro buttons (M1/M2) not working. | Function lock engaged; incorrect programming. | Ensure the function locks next to M1/M2 are disengaged. Re-program the macro buttons as per instructions. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | JK02 |
| Battery Capacity | 600 mAh rechargeable battery |
| Playing Time | More than 18 hours (after full charge) |
| Charging Time | Approximately 2-3 hours |
| Cooling Technology | Semiconductor Chilling Plate |
| Max Cooling Temperature | 18° Celsius |
| Phone Compatibility | iPhone 16/15/14/13/12/11 Series, Galaxy S24/S23/S22 Series, Android 6.0+ phones |
| Supported Phone Size | 136-184mm |
| Max Phone Case Thickness | 15mm |
| Connectivity | Bluetooth |
| Weight | 10.8 ounces (approx. 306 grams) |
| Dimensions (Package) | 9.45 x 4.76 x 2.64 inches |
9. Warranty and Support
For warranty information and technical support, please refer to the official Joso website or contact Joso customer service directly. Contact details are typically found on the product packaging or the brand's official online presence.
Protection plans are available for purchase separately to extend coverage for your device. Please refer to the retailer for details on available protection plans.
Visit the Joso Store on Amazon for more products and information.





