Auto Sync Issue

[monstermav1]

Hi I am having a strange issue my nexus 5 is perfect bar one thing
My gmail and hangouts won't sync unless forced whilst on 3g but on WiFi are fine I am lost at what to look for and have not found any sulotion as of yet
The only account I have on my nexus is my Google account thanks in advance

Grant

 

[monstermav1]

Help or suggestions would be great guys YouTube isn't working on 3g either although it is fine on WiFi network mode I have changed from lte to 3g and even to 2g and still the same issue it isn't only with my Google account I thought I would install Facebook messenger and see what happens there exactly the same on WiFi works a treat you receive the message when you should but on 3g nothing only when u go and refresh manually you may receive the message
Many thanks guys

Sent from my Nexus 5 using AC Forums mobile app