How to scan for available Mobile networks in Samsung Galaxy Grand 2(SM-G7102)?

a). Tap on Apps as shown below.

b). Tap on Settings icon and then tap on Connections as shown below.

c). Tap on More networks as shown below.

d). Tap on Mobile networks as shown below.

e). Tap on Network operators and then a notification appears if your data service is active. To disconnect the data service and search the available networks tap on OK.

f). Your device will search for available networks.

g). The available networks will be listed. Select the network you want to use by tapping on it.