Looks like there can sometimes be too many concurrent users for the network cell serving your location, ​@ClareG.

Perhaps the Vodafone Three merger will lead to better network performance. 

Hey there ​@ClareG, as kindly advised by ​@andewhite, there is at times heavy usage in the area. Please see here:

https://www.three.co.uk/support/network-and-coverage/coverage?location=dh44ar&tab=2#tabs-c2d0d12ce8-item-2988999184-tab

However, we’d still expect you to receive a good signal on 4G at most times. How long have you had issues for?

Thanks,

Tyler

Hi Tyler. It was the past couple of hours but seems to have sorted itself now. We have 4 phones between us and they were all showing as no signal. Clare