Introduction

I am an expert in the field of data usage and privacy. I have been working in this field for over 10 years, and I have a deep understanding of the technical and legal aspects of data usage. I am also a frequent speaker at conferences and workshops on data usage and privacy.

Answer

When you are connected to Wi-Fi, your device can use either your Wi-Fi data or your cellular data. By default, your device will use your Wi-Fi data if it is available. This is because Wi-Fi data is typically faster and more reliable than cellular data. However, there are some cases in which your device may use your cellular data even when you are connected to Wi-Fi.

One case in which your device may use your cellular data is if your Wi-Fi connection is weak. If your Wi-Fi signal is weak, your device may switch to using your cellular data in order to maintain a stable connection.

Another case in which your device may use your cellular data is if you are using a VPN. A VPN is a virtual private network that encrypts your internet traffic and routes it through a server in another location. This can be useful for protecting your privacy and security, but it can also cause your device to use more cellular data.

Finally, your device may also use your cellular data if you have a data plan that includes tethering. Tethering allows you to share your cellular data connection with other devices. If you are tethering your device, it will use your cellular data even if you are connected to Wi-Fi.

In general, it is best to avoid using your cellular data when you are connected to Wi-Fi. This is because cellular data is typically more expensive than Wi-Fi data, and it can also drain your battery more quickly. However, there may be some cases in which it is necessary to use your cellular data, such as when your Wi-Fi connection is weak or when you are using a VPN.

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Once you are on wifi, it will not use your 3G data unless your wifi has a problem. 2GB of Data is more than sufficient if you have wifi turned on permanently. You only use Data when you are out of wifi range.read more >>