The Galaxy S6 is a Samsung phone, which has a quality touch and is also light. A notable feature is the flat aluminum edge and gorilla glass back. The removable back has been replaced, so you can't swap out the battery. Instead, you have to go for wireless charging.
The SG comes in blue, black, white, and gold. The phone is a little more significant because of the generous screen and thinner at 7mm. The phone weighs 138g. The iPhone 6 has an aluminum unibody design, which gives it a better hold. It is an Apple phone, and it is available in three colors, which include silver, gold, and grey.
The iPhone 6 versions are thinnest to date at 6.8mm. It is marginally lighter at 129g. Also, Galaxy 6 has a much larger screen, and the display is 5.1 inches.