Hi there,
I have been using Deezer for quite a long time now, however, some issues are still present or have only been partly fixed, such as:
- Deezer Connect: The first implementation is pretty good for a start, but what about a global synchronization feature? Why restrict it from mobile to web?
- Slow performance on Android, especially with a slow network, it will retrieve EVERYTHING online instead of using the downloaded content/cache first, which is really annoying (and inefficient) when you are trying to load a downloaded playlist but have slow internet connection (👋metros/trains).
- Outdated API: Do you want to have Deezer everywhere just like Spotify? Start by updating your API, if it’s good enough, some technical requests that are asked by some users (but not the majority) can be fulfilled by the users themselves, until an official implementation is made. And mostly, make Deezer Connect available with your API, as it’s really powerful.
PS: The terms and conditions from your API website are still using Blogmusik, Deezer’s previous name before… 2007.

My question is: Do you have an ETA for those issues? Supposing that something will be done.
I do really like Deezer’s UX/UI compared to Spotify, but if they do add Hi-Fi this year, well 😅