The Telstra share price climbed to a 52-week high of $3.83 yesterday. This telco giant's shares have been in fine form this year thanks to its improving outlook. This is being underpinned by its 5G leadership, rational competition, and cost reductions. In addition, Telstra has announced a major asset sale, plans to return funds to shareholders, and its belief that a return to growth is on the horizon. The Telstra share price is up 26% in 2021.