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Audio quality can be improved using a VoIP application over WiFi. Cellphones have small speakers so that the user can use a speakerphone feature and talk to a person on the phone without holding it to their ear. The small speakers can also be used to listen to digital audio files of music or speech or watch videos with an audio component, without holding the phone close to the ear. Google Rolls Out Air Strike Alerts For Android Phones In Ukraine Cell phones are particularly valuable for patrol officers in vehicles because of their wide geographical reach, allowing the officer to be reached both on and off the property. "Children of the Congo who risk their lives to supply our mobile phones". The mobile phone is in category 2B , which ranks it alongside coffee and other possibly carcinogenic substances. Cell phone sharing is prevalent in urban India, as families and groups of friends often share one or more mobile phones among their members. There are obvious economic bene...