Weaker signals since updating to 4.3 topic

As the title states, my signals both data and calls have been notably weaker than they previously once were on 4.2.2, my journey is exactly the same and a friend of mine who has the same tariff as me has had no change. I'm using the EE radio/baseband which is what network I am on, so I can't figure out what the problem could be.

Any ideas or anyone else in a similar boat who hasn't had these issues and what you've done to maintain the same signal would be great.

Cheers.

Sent from my C6903 using XDA Premium 4 mobile app