Does iPhone automatically use Wi-Fi over data?
Yes, iPhones are designed to automatically prefer Wi-Fi over cellular data when a Wi-Fi network is available. When your iPhone is connected to Wi-Fi, it will use the Wi-Fi network to transmit data instead of using the cellular network, as Wi-Fi is generally faster, more reliable, and often unlimited in terms of data usage compared to cellular data.
By default, when a Wi-Fi network is available, your iPhone will automatically connect to it and use it for internet access. Your iPhone will also automatically reconnect to the last Wi-Fi network that you used when you return to that location.
However, keep in mind that there may be situations where your iPhone may still use cellular data even when connected to Wi-Fi. For example, if the Wi-Fi signal is weak or intermittent, your iPhone may switch to using cellular data to ensure a more stable connection. Additionally, some apps may continue to use cellular data even when connected to Wi-Fi if they are not designed to use Wi-Fi exclusively.
You can check whether your iPhone is using Wi-Fi or cellular data by looking at the status bar at the top of the screen. If you see the Wi-Fi symbol, your iPhone is connected to a Wi-Fi network and using it for data transmission. If you see the LTE or 5G symbol, your iPhone is using cellular data.