a. As 4G is still a new technology, not all devices have 4G capability. If you are not sure about whether your smart device is 4G enabled, you can SMS ‘4G check’ to 199 (toll-free.) Alternatively, you can also visit the Vodafone website.
You can check for yourself, too. Go to Phone Settings> About Device> and you will find the device model number. You can search for this model online on websites such as GSM arena or Phone Arena to check whether it supports 4G.