This is why market capitalisation is not always the best of metrics.
AT&T assets are valued at almost twice of T-Mobile (~$400B vs ~$211B). AT&T is also ahead of Verizon (~$377B) by a nice margin. It’s also right behind Verizon in revenue, and ahead of T-Mobile ($136B for Verizon, $120B for AT&T, and $80B for T-Mobile).
AT&T assets are valued at almost twice of T-Mobile (~$400B vs ~$211B). AT&T is also ahead of Verizon (~$377B) by a nice margin. It’s also right behind Verizon in revenue, and ahead of T-Mobile ($136B for Verizon, $120B for AT&T, and $80B for T-Mobile).