I, too, oddly behaving H. The other day, at night just left on the mobile network (not the Internet), in order not to miss calls, it took 9% for 11 hours. Yesterday left in airplane mode (without the Internet) and took 11 hours to 4%. So it was on 12.1.2 and now as well at 12.2, sewn in the DFU, unit 2 months, the battery capacity of 100%. Well, it should not be because of this. On 6S with similar scenarios took me no more than 1%.
I think it is necessary to contact the ASC.
Goes to 1% every 3 hours airplane mode:Post has been editedi_Mobilka - 17.05.19, 14:09