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Whose cell phone numbers do you know by heart? Choose all that apply. Published on September 14, 2018 → Survey conducted on September 14, 2018 on 6209 U.S. adults
82%
44%
33%
23%
18%
8%
15%
4%
1%
1%
4%
7%
By:
82%
44%
33%
23%
18%
8%
15%
4%
1%
1%
4%
7%
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