McKinsey, the consultancy, polled 15,000 adults from 19 cities and 12 countries, and found 51% had accessed the internet in the last month, with 25% logging on every day.
"Urban Africans have embraced the internet, driven by the need to connect with friends and family and the increasing affordability of internet-capable phones," the study said. "This embrace of all things internet comes despite low incomes and limited infrastructure."
Currently, a 54% majority of the consumers questioned possess smartphones or other web-enabled phones, a figure peaking at 95% in Kenya.
At present, 16% of respondents go online via a mobile handset on a daily basis, a total reaching 13% for PCs, laptops and tablets. A 4% share of the panel employed both routes.
Kenya was the top-performing country in this area, as 43% of local interviewees utilised the web each day, with Senegal claiming second position on this metric, recording 33%.
More broadly, 21% of respondents dedicated over ten hours a week to the internet, while 21% spent between one and ten hours doing so, and 6% clocked up less than 60 minutes online per seven days.
At the country level, Kenya once again led the charts with 29% of its participants utilising the web for at least ten hours per week. Morocco followed next on 27%.
The most common pastime was social networking, as 57% of people using the mobile internet and 55% of their peers with PCs, laptops and tablets regularly visited sites like Facebook and Twitter.
An additional 39% of those surveyed sent email from their phone, rising to 45% for users of other computing devices. Both audiences registered 38% when it came to watching music videos.
By contrast, ecommerce yielded a 13% uptake for computer users, and just 10% on mobile. Online banking posted 12% among the latter group but just 10% for the former, the study stated.
"Urban Africans across the continent are gaining significant levels of sophistication when it comes to using the Internet, but telecom players could capture a lot more value by helping more of them overcome the real and perceived barriers to going online," McKinsey concluded.
Data sourced from McKinsey; additional content by Warc staff