Well honestly coming from an iPhone 4S to Note 4, it's hard to compare the running two different operating systems, but I will say I use Note 4 as a daily driver and I love it there r a few things I miss with iOS but over all Note 4 is much better device for longer battery life and alot more storage space but it's all personal preference.
I'm glad I didn't buy iPhone 6. Plus I'd b very unhappy since iOS 7 and iOS 8 is just worse yet...
I can't say iPhones r bad cause I do own them, just they r very expensive for nothing. My iPhone 4S is pretty much same as iPhone 6 yes they made screen bigger but and it's a bit faster but features I have all the same... and if you want faster performance Note 4 opens an runs apps fast, which in my opinion is very sad on apples part since it's running on a low screen resolution.
If I had the money I'd buy both an Switch daily but I don't. iPhone r the same in every generation, an 16gb hard drive is nothing and I have to change it 2-3 times a day.
My Note 4 runs 17 hours with 6 and half hours on on screen time. No iPhone is goin to last that long!