I have the same issue but i just take my phone out and hold it but the thing is it’s not the distance I think something happens to the connection outside. Cause for me if i hold it at the same distance around my pant pocket it still streams alright even though it chops a bit less, but then as soon as i put it inside my pocket it chops like mad. For me it’s just don’t use them outside i guess and try to enjoy the outdoor sounds.
Hopefully Phonak can fix this through software updates.