Hi! I've been having this issue for about a month now and it's so frustrating.
I have a premium account and iPhone 5c. Over 1 gb of free space. I've tried everything that has been posted before, editing the files name, uninstalling the app in both, my computer (MacBook Air) and my phone, checked my wifi connection, clearing the caché, deleting the devices, etc.
I've created a new playlist with local files and i can play it on my computer, but on my phone they appear greyed out and once I press on the "available offline" button, it just gets stuck in "waiting to download" mode. Nothing else happens. I've reinstalled the app multiple times and the error persists. The only way of seeing the mp3 (although greyed out) is by creating a new playlist. The default Local Files playlist is remains empty. I have updated the app in both my computer and iPhone.
Solved! Go to Solution.
Ok, found a solution!
I guess something is messed up with my wifi connection. I simply took my computer and my phone to my gf house and it worked over there... So it is just the wifi in my house =S
I disconnected my Iphone from the wifi by clicking the "forget this network" button and then i reconnected and i opened spotify, then all my local files synced onto my phone from my computer!!
This totally works. I forgot the network and signed back in on both my phone and computer, relaunched the spotify app on my phone, and everything started downloading.
I made a separate thread about this, but it's worth putting here after weeks of trying to figure this out and it being such a simple fix.
I've seen many threads that contain bits and pieces of the solution, but here is what I did. Ignore the whole uninstall/reinstall/firewall bs. At least I've been through all that to no avail. Here's how I got this solved:
ON YOUR MACBOOK: So you have your local files that appear on Spotify. Make a new playlist and call it "Local Files". Drag all the songs (or whichever songs you want synced to your iPhone) from the original Local Files on the Spotify sidebar, to your new Local Files playlist.
ON YOUR iPHONE You will see the new "Local Files" playlist appear. You click download, but the songs are not syncing when you try to download the playlist. The playlist is either "waiting to download" or "waiting for wifi" and most of the songs are greyed out (minus the tracks that Spotify found in its own database--those may be downloaded.) However, keep the playlist switched to Download.
HERE'S THE FIRST STEP THAT MOST "SOLUTIONS" ARE MISSING: On your iPhone Spotify app, click "Your Library" in the bottom right corner. Now on the top right, click the Settings icon. From there, click on "Streaming Quality". Scroll to the bottom and you will see "DOWNLOAD USING CELLULAR", meaning you will be able to download songs over 3G/4G/LTE. MAKE SURE THAT IS TURNED ON. After it is turned on, go back to Your Library, and exit the app.
Create a personal hotspot from your iPhone. Settings -> Personal Hotspot. Turn that on, and join that hotspot on your computer under the WiFi icon on the top bar. Keep Spotify open on your desktop. Open Spotify back up on your iPhone.
Go to playlists on your iPhone. If you haven't yet, download your new Local Files playlist.
This, at least in my situation, magically cured this issue. All of the files now started downloading on my iPhone.
After success, be sure to turn off the "download using cellular" unless you don't mind Spotify downloading music when you're not on wifi.
Let me know if this worked for you!