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This paper presents findings from a study which investigated WiMAX Quality of Service (QoS) as experienced by the end users. The research was conducted in Tanzania, a developing country in East Africa, testing a commercially available WiMAX broadband service. The researchers conducted technical evaluations by testing throughput, packet losses, delay and link stability. They also investigated non-technical issues like helpline facilities and overall users' experienced QoS. Results show that WiMAX is capable of tackling technical challenges faced by developing areas by delivering low cost broadband connectivity with good QoS. This paper is suitable for academicians looking into WiMAX technology and its capabilities especially as a fixed wireless broadband solution. It is also suitable for those who are looking for solutions for connectivity challenges facing developing and remote areas. The authors have presented primary data in this paper with discussions that give others a room to draw their conclusions.