I don't have as robust stats but mine is spread a little over a year mostly for android and it's shows Samsung tied with Infinix (about 23% each),then Tecno (19%), itel (6%) and Gionee (3%) as leading phone brands.
Users are 87% Nigerians in Nigeria
For users in in Nigeria, our iphone data is sparse since they account for only about 1.5% of our users.
(It might be interesting to note though that the Afmobi Group own the Infinix, Tecno and itel brands. So they are ahead by far...)