Down to business, this goodies am about to unveil is not for all MTN Sims, meaning is the lucky ones.
First of all to enjoy the 5 gigabytes for 50 naira, you have to do this;
Load Card on your Sim
Dial *662# reply with 6..2...1 to activate the wechat weekly plan for 50 naira. And you done.
Dial *131*4# to check your 5 gigabytes.
Enjoy surfing the net free.