B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
81%
81% -- smartphone penetration for US population (2019)
Smartphone penetration among the U.S. population reached 81% 12 years after the launch of the first iPhone.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
81%
Unit
Percentage
Data Vintage
2019
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Pew Research Center
Primary
Tier C
https://www.rattleback.com/insights/articles/future-professional-services-digital-marketing/ ↗
Source Article
Professional Services Digital Marketing in 2025
Original Research
Pew Research Center
· Original study ↗
Methodology
Cited by Rattleback from Pew Research smartphone ownership data, presented as context for mobile search/audience behavior. Publication year inferred from article's internal references (12 years since 2007 iPhone launch).
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
US population: 81% smartphone penetration. Source: Pew Research Center (2019). Via Lighthouse Intelligence -- https://lighthousedata.io/data/us-smartphone-penetration-2019
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<blockquote cite="https://lighthousedata.io/data/us-smartphone-penetration-2019" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>81%</strong> -- smartphone penetration for US population<br><small>Source: Pew Research Center (2019) · <a href="https://lighthousedata.io/data/us-smartphone-penetration-2019" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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