Poor signal on two EE phones

[jamojamo4572]

My son and I recently changed plan with EE and we are both noticing worse connection than previously in multiple locations 

Is there any reason for this and how can it be improved please ?

[bristolian]

The radio network has no involvement in your account details, and thus there's no reason for coverage to be different or worse in this scenario.

Can you elaborate on what you mean by a "worse connection"? Are you just checking your on-screen signal bars, which are only a rough guide and should never be the be-all-and-end-all?

Or are you experiencing specific issues using your phones for calls, texts or mobile data?