Another way to solve this issue is by buying any data plan from Glo using *777# and once the data is active, your phone network connection icon would appear instantly.
You can buy the Glo Facebook Flex data plan of 25naira for 3 days by dialling *206*66# in order for the connection to appear and enjoy your unlimited browsing on anonytun VPN.
Glo Free Browsing Cheat Code with Anonytun Beta VPN
Kindly share your experience if it works for you. Enjoy.