Hi guys, since the first day I have this problem, I don't know why is happening and it's quite strange because I don't know if many people have this problem. I have iPhone 6s 64GB sim-free (I'm from sunny Spain). The touch ID works perfectly during the day, but when I'm charging it, mostly of the times it doesn't recognize my fingerprint (even the screen doesn't show the mistake on the recognize, it's like if I don't put my finger on my touch ID). Sometimes it works properly (around 20% of the tries), but mostly not. Any recommendation? Should I go to Apple store?