Instead of the 8-megapixel camera found on the Butterfly, the S gets the 4-megapixel Ultrapixel camera with a f2.0 aperture and BSI sensor. It's the same shooter that the One has, and you'll find that performance is similar. You'll get better low-light shots, but the aggressive noise compression algorithm tends to smear details. You'll also be losing out on details that you can get on images taken with a higher-megapixel sensor in bright conditions.
Packing a quad-core 1.9GHz Qualcomm Snapdragon 600 processor, the Butterfly S is slightly faster compared with the HTC One, which uses the same chip, but clocked at 1.7GHz. The 3DMark benchmark tests showed that the Butterfly S is slightly faster than the Samsung Galaxy S4, which uses the same 1.9GHz Snapdragon 600.
The Butterfly S' 3,200mAh battery chugged along for about a day and half of moderate use. The smartphone was tested with our normal test settings of having two e-mail accounts, Facebook, and Twitter set to push notifications.
Voice quality was great, and if you like using the speakerphone feature, you'll appreciate the BoomSound front-facing speakers.
There's no doubt that the HTC Butterfly S is a great phone. While the design isn't new or interesting, it does sport better hardware specs compared with the flagship HTC One, though at a slightly higher price.
However, I still feel that the design needs to play an important part in smartphones -- with pretty much the same UI, these handsets need to distinguish themselves with the use of premium materials such as aluminum and glass.
While the Butterfly S does come in three striking colors, I'm of the opinion that with smartphones becoming lifestyle products, its design needs to stand out more. That's why despite the great hardware and features, I won't be awarding the Butterfly S with our Editors' Choice Award.
That said, if you're keen on picking one up, be sure to check with your local retailers for country-specific pricing and availability.