iPhone 6 Plus says no service when in a case

[iMore Question]

I just upgraded to the iPhone 6 Plus but I bought a flip case to protect it in my handbag/ pocket but as soon as I fit it it says " no service " then when I remove it it is back to 4g - odd!

 

[kch50428]

Obviously there's something in the case that attenuates signal...seek another case.