First off, inquiries over 12 months of age do not affect FICO scores and inquiries 6 to 12 months in age have only a really small impact.

Second, the "type" of inquiry mostly matters if you meet the "rate shopping" condition for FICO scoring; i.e., multiple mortgage inquiries within a set period of time count as a single inquiry.

Third, the "Plus" score you cite is a fake score, ignore it.

Myfico.com sells (an overpriced) score based on your Equifax consumer report (using FICO04 model). The Transunion-based FICO score sold at myfico.com is FICO98 and obsolete; consumers should not waste money buying it. There is no current means for a consumer to buy his or her EX FICO score.

Free FICO scores can be obtained if you are a walmart card holder (based on TU), are a member of DCU (based on EQ), or a member of a small CU in PA with limited membership (based on EX).

All that said, an inquiry for phone service affects FICO the same as one for a credit card. I hope this helps.