The "official" Samsung charging back does add significant depth to the phone that even Samsung's marketing dept will admit:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-CI950IWUSTA
If you can find a side by side shot it is readily apparent. May not fit some cases as Samsung states.
The internal receivers such as Fonesalesman and others are as thin as a dime so fit within the stock case with no bulge. They utilize charging contacts that lie near the sim inside the case. When placed on a Qi pad such as Samsung's and others it charges till it gets to 100% then shuts off. That isn't a function of the charging pad but a function of the phone just like it was plugged into the USB charger. The phone says "stop charging" not the charging devices. When placed on a charging pad with the receiver in place the phone pops up a banner that says some like "charging wirelessly". I still use the USB port for long car trips or traveling but it is a hassle once you are used to charging wirelessly. Fumbling around in the dark trying to find a cable, is it right side up? Add the flap to that equation? MUCH faster than placing it on a pad. That USB port plug (the weakest link in the S5 charging scenario IMHO) makes wireless charging is a no brainer. But some folks will be charging their S11's in 2020 via USB carrying a pocketful of spare USB plugs around. "Because I always did it that way".
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-CI950IWUSTA
If you can find a side by side shot it is readily apparent. May not fit some cases as Samsung states.
The internal receivers such as Fonesalesman and others are as thin as a dime so fit within the stock case with no bulge. They utilize charging contacts that lie near the sim inside the case. When placed on a Qi pad such as Samsung's and others it charges till it gets to 100% then shuts off. That isn't a function of the charging pad but a function of the phone just like it was plugged into the USB charger. The phone says "stop charging" not the charging devices. When placed on a charging pad with the receiver in place the phone pops up a banner that says some like "charging wirelessly". I still use the USB port for long car trips or traveling but it is a hassle once you are used to charging wirelessly. Fumbling around in the dark trying to find a cable, is it right side up? Add the flap to that equation? MUCH faster than placing it on a pad. That USB port plug (the weakest link in the S5 charging scenario IMHO) makes wireless charging is a no brainer. But some folks will be charging their S11's in 2020 via USB carrying a pocketful of spare USB plugs around. "Because I always did it that way".

