How does Sony camera transmit photos to mobile phone?

There are two ways for Sony cameras to send photos to mobile phones, as follows:

1. After connecting to Wi-Fi with the Play Memory application, select Connect Camera and download photos.

2. Use the card reader, take out the memory card and insert it into the card reader, then insert the card reader into the USB interface of the mobile phone, and select the photos in the memory card to download to the mobile phone.