Hello,
is there any wallet that does not have to download the whole blockchain?
I downloaded a mobile wallet app (bytecoin) from "freewallet"
Personally i transfer some BCN to this wallet, it took slightly longer, but it is legit.
You can use official web wallet
https://bytecoin.money/#/, but i noticed some BCN transaction might goes missing.
Desktop wallet that required to download the entire blockchain still the most stable.