As the 5G technology gains traction, customers have been exploring competitive options from the big three telecoms carriers, which are making big investments to upgrade their networks.

Verizon lost 178,000 wireless phone subscribers in the first quarter, more than 121,700 subscriber loss estimated by FactSet.

Total operating revenue rose about 4% to $32.9 billion, compared with analysts' estimates of $32.46 billion, according to IBES data from Refinitiv.

In February, AT&T, Verizon and T-Mobile won $78 billion in bids in the government's auction of C-Band spectrum, which is seen as the most likely short-term source of available spectrum for next-generation 5G networks.

To finance the purchase, Verizon raised $12 billion in the fourth quarter and more than $31 billion in March this year, the wireless carrier said.

(Reporting by Akanksha Rana in Bengaluru; Editing by Anil D'Silva)