i found the following issue

the phone starts getting hot near the USB port side, and the battery starts to drain really fast when monitor mode is started
i have tested this with injection drivers loaded and without them and the same happens in either case, i'd leave the phone on a cool table with monitor mode enabled and nothing else running, after about 10 mins when picking up the phone it is really noticeable that it is hot on the left side, after turning monitor mode off it starts to cool down again and the battery dose not drain so fast like before

i dont know if the same issue was there with KP50 as i didn't set the wlan to monitor mode long enough to notice this

this may be normal due to the Wlan not going into power saving mode while in monitor mode, but i hope if someone can confirm or provide more info about the issue