High inflation and macro economic challenges have forced consumers to cut back spending even as rivals undercut each other with cheaper and bundled offerings, leading to customer churn at top wireless carriers in a subdued market. T-Mobile added 538,000 monthly bill-paying phone subscribers in the quarter, compared to analysts' expectation of 547,800 net additions, according to FactSet. Analysts and investors generally watch wireless subscriber figures closely as those customers pay a recurring monthly bill, making them valuable to the carriers.