I have a Galaxy S4 and it connects to SureSignal3 and shows highest connection ...4 bars and HSPA+
Howewver have added in my new phone - iPhone 6+
it only shows 2 bars and Edge connection (not even 3G) and dropping frequently.. so assuming its not connecting to SureSignal at all.
Just checked again and SureSignal settings shows the correct phone number is there, anything else I need to do ? or can test.