@111Katie
You can always find out yourself by using https://status.o2.co.uk
It could be a number of reasons, your home is blocking the signal coming through the walls, a service issue with a local mast.
Have a look here for some tips Guide: How can I sort out my network issues?
- Xperia 1V - o2 and Spusu
- Pixel 8 Pro - o2 and Vodafone UK
