They do credit checks with new service. When I signed up the hard pull didn't affect my score at all. Unless you have multiple hard checks in a short period, one hard pull shouldn't change your score that much if at all.Jan 29, 2020
What credit check does Verizon use?
Carrier Preferred credit bureau
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AT&T Equifax
Sprint Equifax and Experian
T-Mobile TransUnion
Verizon Equifax