I have a T-Mobile USA Galaxy S8. When I download a app it just says downloading and never actually downloads unless I'm on Wi-Fi. This is my second S8 as I cracked the screen on the first one after having it for 4 months and it did the same. I have the option checked to auto update apps on cellular. I've removed the cache on the play store. I've uninstalled the updates from the play store. I'm running out of ideas! In my old place I had Wi-Fi, but because Hurricane Harvey sucks not living in a place with Wi-Fi now and it's annoying not to be able to download a simple 25mb app. Any ideas would be great. Thanks in advance!