The WiFi chips in Sony cameras are considerably less powerful than the one in your router. Even minor things can cause considerable differences in the performance of the WiFi connection between your camera and your iPhone or iPad.
- Do not block the camera's WiFi antenna: make sure that are no obstacles blocking the WiFi signal between your camera and your iPhone or iPad. These obstacles could be metal objects (e.g. tripod, laptop, etc.), but also your hands or your body. Similarly, a camera or smartphone case that contains metals or other dense materials might weaken the WiFi signal.
- Keep your iPhone or iPad in proximity to your camera: the WiFi signal weakens the further the distance between your iPhone or iPad and camera is. On most camera models, the WiFi signal is best a little behind and above the camera's backside.
- Avoid other WiFi signals: there are typically only a bit more than a dozen different frequency channels in which WiFi devices can communicate. If you are in a busy area with many different WiFi signals, chances are that the transmission between you Sony and your iPhone or iPad camera may be interfered. To solve this issue and improve performance, turn off unused WiFi devices (e.g. your laptop) or change your position.