I haven't messed with my phone at all for 4 months now, but suddenly it wouldn't download any MP3's. I tried installing a different MP3 program and learned that it won't download anything through Google Play. It won't even update any of my other apps. It's a Galaxy S5 with root, nothing else. I've tried doing a complete phone reset (without wiping my apps though). I've uninstalled Google service and Play updates, had to download the APK's manually to get it back to the new version. I've cleared Google play and services cache and data multiple times. I've closed and reinstalled my google account on the phone several times. The browsers all work fine, they operate and download perfectly. My hotspot is working well too, no problems. But any app that needs to download including google play, will not download.