Coming from my 6S 1715 mAH battery the X is night and day difference.
I’m a heavy phone user through the day for different activities.
Had to have my 6S on a battery charger by mid day at work, and if I left work at 100%, my heavy use at home wouldnt last before I go to bed by midnight without having to recharge again.
With my X , Now I can go all day till 9pm if I don’t charge it once.
If I have it charged to 100% when I leave work now, I don’t have to charge again till I go to sleep.
I’m impressed with the battery size and efficiency.
Got myself of Mophie to take advantage of fast wireless charging.
On the wireless Mophie I’m back to 100% in about 2hrs 15 mins. Faster than it took my 6S smaller battery on the wire. Can’t complain myself. 😀