Up to 150 Cell C employees could lose their jobs as the company looks to streamline its business.
Cell C said it was busy with a process of consultations which could lead to retrenchments.
The company explained the latest development, saying it was overstaffed in many areas and in order to streamline the business and make it more competitive, this process had to be implemented.
Cell C said it was in the process of consulting with the effected employees but said approximately 150 people could be retrenched.
The company announced last week that is its majority shareholder, a Dubai-based company, is injecting about R1,5 billion into cellphone network.
The funding will be used to support the company's plans, which include improving the quality and coverage of its system.
Cell C has made a concerted effort to grab market share from cellphone giants Vodacom and MTN since Alan Knott-Craig joined the company as chief executive recently.
Knott-Craig was formerly Vodacom's CEO for many years.