How Long Is a Phone-Number Sign-Up Flow?
- By Ali Abouelatta
- n = 12
- Published
- Updated
- 2 min read
- signup · onboarding · ux-patterns · mobile
Short answer
Across 12 tracked phone sign-up flows, the median is 7 screens and the average is 7.3 source[1] — slightly longer than email/username sign-up (median 6, n=87) source[2]. Lengths range from 2 to 14 screens source[1]. The extra step is typically OTP verification. This is a small sample, reported with explicit n.
Phone sign-up runs a median 7 screens vs 6 for standard sign-up — about one extra step for OTP (n=12 flows, July 2026).
Bar chart · Flows
Flows — Phone sign-up in context
One block is about 4.6 Flows
- Sign in
- 110
- Sign up
- 87
- Sign up with phone
- 12
- Onboarding
- 129
The finding: about one screen longer than standard sign-up
Phone sign-up flows (exact-name 'sign up with phone', 12 flows) average 7.3 screens with a median of 7 source[1]. That's roughly one screen more than standard sign-up (median 6) source[2], consistent with adding a phone-entry and OTP-verification step. The 2-14 range source[1] shows some apps keep it minimal while others layer in profile setup.
Phone sign-up in context
Phone sign-up sits just above standard sign-up, well below onboarding.
How to apply it
If you're adding phone/OTP sign-up, budget ~7 screens and treat the OTP step as the one unavoidable addition over email sign-up. Keep the rest lean — the data shows no need to exceed the low-teens. Because n=12 is small, use this as a rough planning anchor and validate against your own completion rate.
Real in-market screens
Screens from real, in-market apps, tracked by Lazyweb Research.
Polymarket1206 × 2622opens the full image 
Splice1179 × 2556opens the full image 
Drops1206 × 2622opens the full image 
Speak1206 × 2622opens the full image
The numbers
| # | Stat | Computed from |
|---|---|---|
| [1] | sign up with phone 12 flows avg 7.3 median 7 range 2-14 | flowtype_sign_up_with_phone |
| [2] | sign up 87 flows avg 6.3 median 6 | flowtype_sign_up |
| [3] | sign in 110 flows avg 4.5 median 4 | flowtype_sign_in |
| [4] | onboarding 129 flows avg 13.9 median 11 | flowtype_onboarding |
Methodology
Universe: 2,468 tracked flows; phone sign-up (12), sign up (87), sign in (110), onboarding (129) by lower(flow_name). Small sample (n=12): median and range with explicit n, no percentages. Screens per canonical flow.
Sources
- [1]
Lazyweb Research analysis of 12 phone sign-up flows (subset of 2,468 tracked flows), July 2026
Exact-name 'sign up with phone'; small sample, reported with explicit n.
- [2]
Lazyweb Research analysis of 87 sign-up flows (subset of 2,468 tracked flows), July 2026
flow_name containing 'sign up', excluding phone variant.
- [3]
Lazyweb Research analysis of 110 sign-in flows (subset of 2,468 tracked flows), July 2026
flow_name containing 'sign in'/'log in'/'login'.
- [4]
Lazyweb Research analysis of 129 onboarding flows (subset of 2,468 tracked flows), July 2026
LIKE '%onboarding%'.
Source: Lazyweb Research — proprietary analysis of real, in-market app screens. Cite as Lazyweb Research, 2026-07-07.
Explore the evidence
- Full 45-frame August 2026 capture
- Three captured screens · August 2026