I used to pair my Bluetooth headset to my iPhone in the "standard" way using the Settings app. The pairing goes like the following:

 1. open Settings | Bluetooth, and turn on the headset:

    [![enter image description here][1]][1]

 2. wait for the headset to appear, and tap on its button:

    [![enter image description here][2]][2]

 3. the headset is connected:

    [![enter image description here][3]][3]

Recently I got a new Bluetooth headset, and I found that it pairs in a different way, which goes like the following:

 1. open Settings | Bluetooth, turn on the headset, and a "Bluetooth Pairing Request" dialog pops up automatically:

    [![enter image description here][4]][4]

 2. tap on the "Pair" button, and the headset is connected:

    [![enter image description here][5]][5]

I think the second way of pairing is a little more convenient. What makes the pairing procedures for the two headsets different? Is the new headset using some kind of advanced Bluetooth technology?


  [1]: https://i.sstatic.net/cr0DY.png
  [2]: https://i.sstatic.net/oMDhl.png
  [3]: https://i.sstatic.net/xZjKV.png
  [4]: https://i.sstatic.net/3yLIz.png
  [5]: https://i.sstatic.net/s4MRp.png