1. Jumia (www.jumia.com.ng)
Jumia Nigeria is the No. 1 Online retailer in Nigeria. As a marketplace, you have more than one option of prices for iPhone 7 based on specs and features. As a lover of Apple's product, you get the best prices of iPhones on Jumia.
iPhone 7 (32GB) = ? 378,000
iPhone 7 (128GB) = ? 421,999
iPhone 7 (256GB) = ? 455,699
iPhone 7 Plus (32GB) = ? 461,299
iPhone 7 Plus (128GB) = ? 599,000

2. Konga (www.konga.com)
Konga.com is Nigeria's largest online mall. Launched in July 2012 with the mission is to become the engine of commerce and trade in Africa. Konga has over a thousand brands of smartphones in its inventory including the popularly demanded iPhone 7 and iPhone 7 Plus.
iPhone 7 (32GB) = ? 378,000
iPhone 7 (128GB) = ? 438,900
iPhone 7 Plus (32GB) = ? 510,000

3. Slot NG (www.slot.ng)
SLOT Systems Limited is a household name for affordable and durable mobile phones for all levels/classes of people. As an indigenous company, SLOT does not only sell phones but also provide first class after sales support that is incomparable in any Western African information technology sector.
iPhone 7 (32GB) = ? 400,000
iPhone 7 (128GB) = ? 450,000
iPhone 7 Plus (32GB) = ? 500,000

http://phonesnaija.com/2016/10/14/where-to-buy-the-new-iphone-7-and-iphone-7-plus-in-nigeria/