  Quality of service in cellular communication system is a topic that recently
has raised much interest for many researchers. This paper presents the findings
obtained from the study on factors affecting QoS in Tanzania cellular networks.
The study was carried out in Dodoma Municipal, Tanzania. The study employed
cross sectional research design. Information was gathered from structured
questionnaire of 240 subscribers during the study of quality of service for the
four leading cellular networks in Tanzania. Both qualitative and quantitative
data from field survey were collected and analyzed using Statistical Package
for Social Sciences and Excel software. The study findings show that the major
factors that degrade QoS in Tanzania cellular networks are inadequate network
infrastructure, lack of fairness from service providers and little efforts
taken by the government in enforcing the national agreed standards. Other
factors are lack of reliable end to end systems, geographical terrain, low
quality handsets, poor government monitoring on standards and lack of
subscriber skills and training.
