The post you'd responded to was over 4years old, so it's been moved to a new dedicated thread.
If there was an easy solution to provide coverage in any given location, outside of building new network sites, then the operator that can do it has an instant way to provide 100% national indoor coverage - imagine the marketing bonus that would be.
Every network - that includes EE - has good coverage areas and bad ones, none are likely to ever claim blanket national coverage. WiFi-calling offers a good mitigation for poor indoor coverage whenever it happens, whilst the mobile network should be providing good wide area coverage. I could cite numerous locations where EE is the only network to work, and where O2 is the only network not to work, but neither would claim to offer the best service everywhere.
On a broad national basis, EE consistently performs well in all the surveys that are based on real-world network testing, but that will never mean they are the best in every location or for every user. Not to mention that there is far more to network service than "the most bars"
