As per a report by CDC,
More than a quarter of young adults have only cellphones, making them the leading edge of a strengthening move away from traditional landline telephones, a federal survey showed Monday.
One in four people aged 18 to 24 had only cellphones, as did 29% of those aged 25 to 29, the study showed. The percentages declined with age after that, with 2% of those 65 or over having only cellphones.
The trend away from landline phones affects the telephone industry, 911 emergency service providers, and government and private polling organizations, which rely heavily on random calls to households with wired telephones.