After that: Press the "Power" and "Home" Button at the same time for exactly 10 seconds.
The iphone switches into DFU mode and kills all the running processes. If the apple logo shows up a second time, youve pressed the buttons too long.
I have an i Phone 5 with i OS 8.4 Never had an issue untile three days ago.
And I could not download new apps either, they would stick on the waiting too.
I reset all of my settings and I was able to get dowloads working again.
To determine if the problem is network-related, you can also try to bypass your connection or access the Internet via wired connection.
Here’s how: Generally, app updates are done through Wi-Fi only.
So I signed in again and everything worked as it should once I had restarted the phone.