The mobile telephone sector has shown dramatic growth in Africa. With the number of mobile phone operators raised, now Tanzania considered the largest telecommunications network in East Africa with over 40 million registered subscribers and mobile money accounts. However, the services provided by operators have not been assessed by the Authority. Therefore, this paper focus on evaluating the efficiency of mobile phone operators in Tanzania. A data envelopment analysis (DEA), NonRadial and Oriented model on the slack-based measure (SBM) was used for the performance analysis. A five input and five output variables generated from 27 reports (2010 to 2016) of Tanzania Communications Regulatory Authority (TCRA) was used to study the efficiency of mobile phone operators. The results show only three operators are efficient with Vodacom-Tanzania ranked as first, followed by Airtel-Tanzania, and Tigo as the third. While Zanzibar Telecom (Zantel), Smart, Halotel and Tanzania Telecommunication Company Limited (TTCL) considered being inefficiency operators.

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The information and communication technology (ICT) become paramount in the contemporary whereas the society and other educational partners would not be far away from uses of this developmental technology. This study aimed to evaluate the perceptions of teachers on applying ICT in public secondary schools in Zanzibar. The survey questionnaires deployed as the instrument tool for the data collection in six public secondary schools in Zanzibar. Data analysed through Statistical Package for Social Sciences (SPSS) version 21, and the results revealed that the teachers' have the positive perceptions towards the adoption of ICT use in an education setting. Consequently, the utilisation of technology encourages teaching and learning. Indeed, the teachers showed to be ready to incorporate the ICT use in the teaching process. However, lack of enough time and cost of the ICT services contributed factors that impediment the teachers to embrace ICT use. Moreover, the results demonstrate some teachers' ignorance in insensitive of ICT skills.