Have found 4 bugs on epix 2 pro 51 sapphire

1: when voice prompt is heard it gives a high noise (acoustic feedback in headset) in the first 1 sec of the prompt
2: when switching through screen during running and showing map it locks to maps and cant change to other screens. stopping and starting sometimes helps
3: Could not start music in already paired and turned on headset. After several tries it suddenly worked
4: during running having my iPhone in a bag around my body it shows bluetooth disconnect to phone several times