TMobile US Inc 5.500 Senior Notes due June 2070's TMUSI is an exchange-traded baby bond in the Radiotelephone Communications sector. At a recent price of $20.75, TMUSI yields 6.63% on its $25 liquidation preference and 5.50% coupon. It trades at a discount of 17.0% to par. The issue is callable on or after 2026-06-01. Distributions are paid quarterly. Figures are derived from market data and SEC filings; confirm details in the prospectus before investing.