VIV vs UMC Comparison

Telefonica Brasil, known as Vivo, is the largest wireless carrier in Brazil with 102 million customers, which is equal to about 39% market share. The firm is strongest in the postpaid business, where it has 68 million customers, or about 41% share of this market. Wireless services and equipment contribute about 70% of total revenue. Vivo is the incumbent fixed-line telephone operator in Sao Paulo state and also owns an extensive fiber network across the country. The firm provides internet access to 8 million households on this network. The firm also sells pay-TV and phone services to its fixed-line customers. Finally, corporate data and IT services, including cloud computing support, contribute about 9% of total revenue.

Founded in 1980, United Microelectronics is the world's third-largest dedicated chip foundry, with 5% market share in 2024 after TSMC and SMIC. UMC's headquarters are in Hsinchu, Taiwan, and it operates 12 fabs in Taiwan, Mainland China, Japan and Singapore, with additional sales offices in Europe, the US, and South Korea. UMC features a diverse customer base that includes Texas Instruments, MediaTek, Intel, Broadcom, Novatek, and Realtek, supplying a wide range of products applied in communications, display, memory, automotive and more. UMC employs about 19,000 people as of February 2025.