I call bullshit, that's not how I remember it at all.
The iPhone 4 was released in June 2010 at 960x640. The Samsung Galaxy S2 wasn't available until 11 months later - May 2011, at 800x480. The Motorola Droid X was also available May 2011, at 960x540, along with the HTC Sensation, with the same resolution.
This is the mythology of anti-Apple postings that is so bizarre. They just know that Apple is always technologically inferior.
By 2012, the Android competition has gotten better than Apple in resolution... but only because Apple made resolution important.
But it was also not the first. The Nexus One/HTC Desire had also 800x480 resolution - 6 months before iPhone 4. Also, the original Motorola Droid - available since November 2009 - had 854x480 resolution.