Sample
Nairobi is a place. It is not Kenya.
Run Nairobi if that is where you will launch, and label the readout that way. Add Mombasa, Kisumu or a county town when distance, cash, or a local routine is part of the product: a port, a lakeside market, a town where the agent is the branch. “Urban Kenya” as a single segment hides the difference you needed the study for.
The interface can stay in English. The session should not police language. Ask people to explain the task the way they would to a sibling. Quotes in Kiswahili or Sheng are data. A translator on the team, or a moderator who can follow, matters more than a perfectly English screener.
Do not interview the cousin with the smartphone.
Households share phones. Shops hand the phone to whoever is free. If your participant is demonstrating someone else’s life, you will design for the most fluent person in the room. Ask who last completed the task, and recruit that person. The practical version of this, for businesses, is how to recruit SME owners.
Afritesting matches on location, work and behaviour, then screens without showing the qualifying answer. You bring the discussion guide. For common profiles, matching is aimed at 48 hours; a specialised audience takes longer. If someone is not who the screener said, they are replaced during the early service at no extra recruitment fee.
If you are still choosing between a global panel and a local recruit, start with user testing for Kenya. This page is the plan. That one is the supply.