Help What are these 2 horizontal arrows?

[bunraku]

Hi

I am in the UK and my galaxy s5 updated the operating system today.

Since then I have 2 horizontal grey arrows at the top of the screen. They've never been there before.

What do they mean?

 

[scary alien]

A couple of sites says that's the voLTE (voice over LTE) icon.

 

[Brian706]

That is correct. For reference, here is another thread with the same question posed: http://androidforums.com/threads/strange-notification-icon.917064/