He used and liked the previous version of the phone is an information source which is a example of Waleed's internal search for information.
A portable telephone that can make and receive calls through a radio frequency link while the user is travelling inside a telephone service area is known as a mobile phone, cellular phone, handphone, cell phone, cellphone, handphone, or pocket phone.
The radio frequency link creates a connection to a mobile phone operator's switching systems, granting access to the public switched telephone network (PSTN). In North America, mobile phones are referred to as cell phones or cellular telephones since modern mobile telephone services employ a cellular network design.
To know more about Phone here-
https://brainly.com/question/29512245
#SPJ4
