I cannot make a Wi-Fi connection between the camera and smartphone.

Check the following steps.

NOTE:

• To connect the camera and smartphone via Wi-Fi, the dedicated application, PlayMemories Mobile, is needed. If you already downloaded the application, update it to the latest version.
  https://support.d-imaging.sony.co.jp/www/disoft/int/playmemories-mobile/en/download.html   
  
• For iPhone, tap Settings, turn on the Wi-Fi, select camera's SSID, and then make a Wi-Fi connection.

1. You cannot connect the camera to the smartphone via Wi-Fi if the software version of the camera is not the latest version. Update the software to the latest version.
   For details, refer to the support page of each product.
2. Remove the battery and the memory card from the camera and reinsert them, then connect to Wi-Fi from the beginning.
   NOTE:
   • If the recordable memory card is not inserted to the connected camera, you may not be able to connect the camera via Wi-Fi.
   • Check that each side of the memory card is facing the correct direction.
3. Turn off the camera and the smartphone and turn them on again.
4. Check that Wi-Fi is enabled on each LCD screen of the camera and smartphone. When Wi-Fi is enabled, a Wi-Fi mark is displayed on the screen.
   NOTE: When an airplane mark is displayed on the LCD screen, the airplane mode is enabled. In this case, you cannot make a Wi-Fi connection. Disable the airplane mode. For details on operation method, refer to the manual supplied with the product.
5. Start PlayMemories Mobile installed on the smartphone. For how to setup and operate, refer to the following:
   https://support.d-imaging.sony.co.jp/www/disoft/int/playmemories-mobile/en/operation/index.html
6. Camera settings differ between Single connection (connect your smartphone and a single camera) and Multi connection (connect your smartphone and multiple cameras).
   Follow the procedure below and check that your camera has a suitable setting.

   • Single connection

   • • FDR-X3000/ FDR-X1000V/ HDR-AS200V/ HDR-AS100V/ HDR-AS50/ HDR-AS30V/ HDR-AS20
       Wi-Fi is set to ON in the camera SETUP menu.
       
     • HDR-AZ1
       If a Wi-Fi mark is not displayed on the display panel of the camera or the bar is displayed above the mark, press the Wi-Fi button until only the Wi-Fi mark is displayed.
       
   • Multi connection
     NOTE: FDR-X3000/ FDR-X1000V/ HDR-AS200V/ HDR-AS50 only
     
   For more details, see the following:
   https://support.d-imaging.sony.co.jp/www/disoft/int/playmemories-mobile/en/multi/index.html
   
7. Reset the camera setting and check if the symptom improves. For details on operation method, refer to the manual supplied with the product.