How many mobile phones can 20 hackers connect via Bluetooth?

Both phones are equipped with Bluetooth function. Xiaokelong's car Bluetooth phone is really convenient and easy to use. You can connect two mobile phones at the same time, upload the phone book, phone number and customize the name from the mobile phone. Originally, I used a Moto phone with keyboard operation, but I touched a Lenovo phone with keyboard. The phone book in the mobile phone can be sent to the car Bluetooth phone book through the Bluetooth business card of the mobile phone.

How many mobile phones can 20 hackers connect with Bluetooth?

When you want to make a phone call while driving, you don't need to move your mobile phone at all. You can select contacts, dial, answer and hang up the phone through the car Bluetooth system. It has been used for more than three years and the sound quality is very good. It is really convenient. A few months ago, you changed a Samsung mobile phone, which can write in full screen and has Bluetooth function. But you can't upload your mobile phone business card to the car Bluetooth. The connection between car Bluetooth and mobile Bluetooth will be automatically interrupted every time you upload, and the mobile phone shows that there is no device to connect.

After countless unsuccessful attempts, although the phone book can't be uploaded, the car-mounted Bluetooth system can answer the phone, but the sound of the car-mounted system is very small, and it needs to be turned up to more than 20, which brings a problem. When hanging up the phone, the car-mounted Bluetooth system prompts that the phone call is over, all glasses are vibrating, and it has Bluetooth sending function. Later, I asked my colleagues about the Bluetooth function of their mobile phones.