Make sure you have very stable 3g or 2g network(In other words if you are using only 2g make sure it is very stable and if it is 3g, same applies) I advice you to use a very stable 3g network
I personally use a wifi router so i always leave it connected indefinetly at least until there is power outage(at times i will quickly switch my router to my power bank before its 6:00am) However, generally you are expected to use this inside your mobile phone. Please always make sure your mobile is restricted to 3g only
Then continue browsing anytime from 5:59am till your connection disconnects. Once your connection disconnect, even if it is by 6:01am, you won’t be able to reconnect again until 9:00pm. So be determined and make sure mtn network is stable and fast in your area. In fact i can never subscribe to a network that is not fast in my area let alone looking for its tweak.
For the records, to subscribe to MTN 4.5GB Night plan + promo dial *102# or send 102 in a text message to 131