I'm having the same issue. It seems to happen when I'm driving and my phone switches from WiFi, to 4G , to no service etc. and it crashes. I have about 3,000 songs saved offline, so that shouldn't make a difference. I have the newest iOS and Spotify is updated as well. I've tried uninstalling which was no help either. The only thing that helps is listening in airplane mode, but I listen to spotify about 8 hours a day from my phone, so that's not always an option.
I have also been having this issue for at least a month: I have an iPhone 6 and am running iOS 9.1. My current version of Spotify is 4.3.0, and I am a premium user. I have tried reinstalling Spotify (including disconnecting it first from the Spotify website) and restarting my phone.
Right now, I can only get Spotify to work consistently if it is in offline mode. I just reinstalled it this morning and have been trying all day to download/sync a couple of my playlists (about 2,000 songs). It has been crashing anywhere from every few seconds to every few minutes (never more than 10 mins) while downloading/syncing. I am connected to WiFi.
Before I reinstalled, I could play my offline tracks if I put Spotify in offline mode. As soon as I switched to online mode, it crashed within a few minutes. This was the case whether I was connected to WiFi or not.
Please let me know if there is something else I can try!
I have an iPhone 6 and this only started when I updated to iOS 9 in September. I never had a problem in the year I was using Spotify before that. So far none of these have changed anything, but I'm still going through the ideas.
So I've tried all of the solutions listed here and it's still happening.
When I tried unsyncing and resyncing my devices, that actually helped for a little bit, until I hit about 1,000 synced songs, and then it started crashing again. Which is kind of what @Thomas_Dus was talking about.
My player also will work if I only use it in offline mode.
thanks for the suggestion. When trying it I experienced - although it "helped" that it doesn't really make sense. Being in offline mode I can't donwload any of my songs and I can't even listen to any other song as streaming is off too. Trying to download all of my songs and then going on offline mode may help, however I never got to that point as the app started crashing again and again ...
Would you be able to pass the issue others like lojaned seem also having on to the deleopers?