I have an quite old smartwatch (LG W100) with only Android Wear 1.5.0 (Marshmallow) on it. Because my phone is a lot newer, I wanted to replace the NotoColorEmoji.ttf with a newer version from the Google website. But when I replaced the file in the /system/fonts folder, no Emojis at all were displayed anymore. When instead I took the ttf file from my Phone and put it on the watch it worked. So what is the actual difference between those file?