This page collects the published figures behind Answer4U’s case — with sources, dates, and methodology notes, so you can check every number yourself. If a figure cannot be sourced, it does not appear here.
The headline figures
US restaurants lose an estimated $20 billion a year to missed calls — QSR Magazine (derivation)
QSR Magazine’s derivation estimates the annual revenue US restaurants lose when calls go unanswered. The per-restaurant figure used elsewhere on this site (around 150 missed calls per month for a typical restaurant) is derived from that total and from industry call-volume assumptions. It is labeled as a derivation wherever it appears, not as a measured fact about any individual restaurant. Your own number will differ — the ROI calculator exists for exactly that reason.
78% of callers abandoned a business after an unanswered call — CallRail, 2025 (via oncrew.ai)
CallRail’s 2025 caller research, as reported by oncrew.ai, found that more than three quarters of callers gave up on a business after a single unanswered call.
82% would call a competitor instead — CallRail, 2025 (via oncrew.ai)
The same research found that over four fifths of callers would contact a competitor after being unable to reach a business. Together, the two figures describe the real cost of a ringing phone: the caller does not wait, and does not come back on their own.
Figures we deliberately do not use
An often-quoted figure claiming most callers never call back circulates in older blog content, but its sourcing is weak (a 2014 contributor piece and a 2016 study, neither directly measuring the claim). We do not use it, and we do not repeat the number here. Similarly, an industry “per-call value” range appears in one competitor’s blog as an industry estimate; if it is ever cited on this site, it will be attributed to that blog as an estimate, not presented as research.
Methodology note
Every figure on this page is either a published research result (with its publisher and year) or a labeled derivation from one. No Answer4U performance figure appears here, because no such figure has been independently measured and published.
Want your own number instead of an industry average? Use the ROI calculator or book a demo. Pricing is discussed on your demo call.