1, headphones are receivers or speakers. Its rated power is very small, generally around 1mW, and its resistance is generally 16 ohm or 32 ohm.

2, mobile phone speakers are speakers, commonly known as speakers. Its rated power is generally greater than 0.7W, and its impedance is 4 or 8 ohms.

The difference between the two forces is hundreds of times. How can they be the same? In addition, headphones are worn on the ears and can only be heard at close range, while speakers can be heard at a distance. If you stick the speaker to your ear, you can't stand it at all.

Each has its own functions and uses!