FAQ
Q1: What is the LanRui M191 used for?
The LanRui M191 is a professional diagnostic tool used to power on and test iPhone, iPad, and Android motherboards without fully assembling the device, making it ideal for mobile phone repair technicians.
Q2: Is the M191 compatible with all iPhone models?
Yes, the M191 is compatible with all unencrypted iPhone and iPad models. It does not support encrypted or iCloud-locked devices.
Q3: Can this tool be used for Android phones as well?
Yes, the LanRui M191 works with all unencrypted Android smartphones and tablets, making it a truly universal power-on diagnostic tool.
Q4: Do I need to solder anything to use this tool?
No, the M191 uses a spring clip mechanism that connects directly to the motherboard power pads — no soldering required.
Q5: What does the LED indicator do?
The built-in LED lights up whenever current flows through the motherboard, giving you instant visual confirmation that the board is receiving power.
Q6: What are the dual working modes of the M191?
The M191 features two modes — Boot Mode, which powers on the motherboard for functional testing, and Current Detection Mode, which monitors live current flow to help identify faults or short circuits.
Q7: Can I use this tool on an encrypted or iCloud-locked device?
No, the LanRui M191 only works with unencrypted devices. It is not compatible with iCloud-locked or encrypted iPhones or Android devices.
Q8: Is this tool suitable for beginners?
The M191 is primarily designed for professional repair technicians. However, its simple clip-on design and LED indicator make it straightforward to use for anyone with basic motherboard repair knowledge.
Q9: Does the M191 require any external power source?
The tool draws power through the motherboard connection itself. No separate power adapter or battery is required for basic operation.
Q10: Is the LanRui M191 durable enough for daily workshop use?
Yes, the M191 is built for professional workshop environments. Its compact and sturdy construction makes it suitable for regular daily use in a repair setting.
