Hello folks, I can confirm the issue on Amazfit GTS after the firmware update on the watch in combination with Tools & Amazfit.. It seems like after the update BT on the phone is crashing - turing off after a short time.. I will try to contact Zdenek Horak author of Tools & Mi Band if he has any ideas about this as he is the ultimate Guru here..at the moment I do not have any ideas on how to workaround this on Sleep as Android end..