A handheld mobile radio telephone service was envisioned in the early stages of radio engineering. In 1917,
The … 詳細

Smartphones have a number of distinguishing features. The International Telecommunication Union measures those with Internet connection, which it calls Active Mobile-Broadband subscriptions (which includes t… 詳細

The critical advantage that modern cellular networks have over predecessor systems is the concept of frequency reuse allowing many simultaneous telephone conversations in a given service area. This allows efficient u… 詳細

The common components found on all mobile phones are:
• A central processing unit (CPU), the processor of phones. The CPU is a microprocessor fabricated on a metal–oxide–se… 詳細

Feature phones have basic software platforms. Smartphones have advanced software platforms. Android OS has been the best-selling OS worldwide on smartphones since 2011.
A mobile app is … 詳細

As of 2022, the top five manufacturers worldwide were Samsung (21%), Apple (16%), Xiaomi (13%), Oppo (10%), and Vivo (9%).
History
From 1983 to 19… 詳細