The reduction is part of the adjustment for mobile rates that was approved in January.
The telco plans to invest more than US$8bn, mainly to expand its mobile and fixed networks.
The unit is a so-called Sedpe, entities designed to offer affordable electronic deposit and payment services to low-income segments of the population.
IBM said the move reinforces the strategic importance of Brazil, which is increasingly becoming a hub for innovation for entrepreneurs, startups and companies from a wide range of business segments.
Four new O3b Medium Earth Orbit (MEO) satellites were launched into space by Arianespace onboard a Soyuz rocket.
The initial deployment plan will begin in Argentina and Chile with a progressive roll-out across Latin America and Europe.
Worldwide spending on mobility solutions is forecast to grow 3.2% year over year in 2018, reaching more than US$1.6tn, according to a new Worldwide Semiannual Mobility Spending Guide from International Data Corporation (IDC).