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Case file

Martin Cooper (inventor)

Wikipedia's first sentence called it “former motorola vice president and division manager who in the 1970s led the team that developed the handheld m”. Today it says “american engineer”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2025 one. Red dashes: removed from Wikipedia since. Pale dots: rewritten; the numbered note shows what it says now. 1 tap a number or a side note to jump between them
The opening as it read in 2025

He is a pioneer in the wireless communications industry, especially in radio spectrum management , with eleven patents in the field. On April 3, 1973, Cooper placed the first public call from a handheld portable cell phone while working at Motorola , from a Manhattan sidewalk to his counterpart at competitor Bell Labs . Cooper reprised the first handheld cellular mobile phone (distinct from the car phone ) in 1973 and led the team that redeveloped it and brought it to market in 1983. He is considered the "father of the (handheld) cell phone ", and received the 2015 IEEE Masaru Ibuka Consumer Electronics Award for this work. Cooper is co-founder of numerous communications companies with his wife and business partner Arlene Harris ; He is co-founder and current Chairman of Dyna LLC, in Del Mar, California . Cooper also sits on committees supporting the U.S. In 2010, Cooper was elected a member of the National Academy of Engineering for leadership in the creation and deployment of the cellular portable hand-held telephone.

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1298045279.
Today
Wikipedia's first sentence called it “former motorola vice president and division manager who in the 1970s led the team that developed the handheld m”. Today it says “american engineer”. Read the current article and compare.
201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.

Then

former motorola vice president and division manager who in the 1970s led the team that developed the handheld m

Now

american engineer

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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