Flagship smart-phones have been getting progressively larger. My first high-end Android device was a Samsung/Google Nexus S, which was comparable to an iPhone 3GS in dimensions. By modern standards it is chunky, yet it remains a good tradeoff between screen size, pocketability, and handling.
The two phones I’ve owned since the Nexus S have had progressively larger screens – I went to a Galaxy SII, and then a Galaxy SIII. But I never wanted a larger device than the Nexus S, just a faster one.