SLOT Systems Limited, Lagos, Nigeria. Enjoy Great Prices And Offers ✓ Best deals in Nigeria ✓ Fast delivery. . Shop for the latest phones, electronics, gadgets, and more at SLOT. likes · 97 talking about this · were here. Find the best deals on a wide range of devices, from top brands to budget-friendly. Buy the latest collection of phones at SLOT Nigeria. Nigeria's foremost online & offline mobile phone store.