The appeal and strength of the iPhone is that you can understand how to use it without reading the manual. However, there are times when you think you know it but you don't understand it correctly. In this section, we will explain in an easy-to-understand manner "why the iPhone can't be heard anymore". This time, I will answer the question "Can the iPhone not receive music via Bluetooth?"
Yes, unfortunately I can't. The iPhone system (iOS) supports the Bluetooth Hi-Fi audio standard "A2DP", but it only functions as a transmitter that sends out audio signals, and has a function as a receiver that receives Bluetooth / A2DP signals. Because there isn't.
To give a concrete example, streaming services such as Apple Music received on iPhone can be output to Bluetooth earphones and speakers. These devices act as Bluetooth receivers, so once paired, they can receive the audio signal from the iPhone (which acts as a Bluetooth / A2DP transmitter) and output it as sound.
On the other hand, most smartphones, including the iPhone, do not have a Bluetooth receiver function. It's technically possible, but it's probably because Apple has determined that the need to receive audio signals from other smartphones is low and that there is no particular benefit to users. You can understand if you want to listen to the sound of your computer via iPhone and if you need it.
By the way, looking at other genres such as digital audio players (DAP), there are products that can both act as transmitters and receivers. For example, a small DAP called Shanling "M0" plays a sound source on a microSD card and sends it with various codecs (SBC / AAC / aptX / LDAC) in addition to the Bluetooth transmitter function, and the signal sent from an external audio device ( It is equipped with a Bluetooth receiver function that receives SBC / AAC / LDAC) and outputs it from the earphone terminal. Since this DAP cannot connect to the Internet, it may have a receiver function so that you can listen to the streaming service received by your smartphone. If you combine it with an iPhone, it seems to be an interesting way to use it.
