Plan research in Angola.

Portuguese is the official language and the main language for government, business and written questionnaires. National coverage often needs interviewer capacity in Umbundu, Kimbundu, Kikongo and Chokwe, especially outside Luanda. Instruments can be written in Portuguese, but oral translation guides and back-translation should test regional vocabulary and education-level differences.

Angola is highly weighted toward Luanda and the western corridor, with Benguela, Huambo and Lubango also important. Large rural populations remain spread across the central highlands, northern provinces and river valleys. A national sample needs Luanda treated as its own stratum and separate rural clusters; targeted work should match province, livelihood and language.

Mobile phones reach most households, but internet surveys skew toward Luanda, provincial capitals and higher-income users. Face-to-face work is affected by rainy-season road conditions, long distances and local administrative permissions. Health, education and public-sector research commonly needs ministry or ethics review. Many studies allow about three to five weeks for fieldwork.

Fieldwork notes compiled from public sources by Surveysphere Africa; confirmed with our in-country partner before a study starts.