Can't download apps from App Store as get button doesn't start download

For a couple days now, whenever I try to download an app from the App Store on my iPhone 5s with iOS 8.3, it brings up the 'use existing Apple ID' or 'create new one' window.

When I select the existing one and fill in my account information it closes the pop up window and starts to download the app (indicated by the circle starting to turn) but after one second it goes right back to the 'get' button.

When I try to download it again it all goes to square one. İt has been driving me nuts! İts like a vicious circle!

From the Apple help site at: https://support.apple.com/en-us/HT201400 it recommended

Make sure that your date, time, and time zone are correct. Tap Settings > General > Date & Time.

My settings were correct. However I turned off the automatic date/time/timezone feature to make the date and time zone setting be manual.

Voila, I could connect to the iTunes/App store. I had turned my phone off and on several times. I really wanted to avoid doing a reset. So I've escaped it for now.

Go to Settings> iTunes & AppStore > Password Settings > slide the "Require Password" switch. This worked for me for free apps.