According to Apple my true signal at home is No Service on O2 although my other Nokia 12pound phone shows 4 bars at the same location and works great.
While I'm sure that's true, it's completely irrelevant. Every phone is a series of tradeoffs between style, weight, antenna design, etc. etc.
An old brick of a Nokia is skewed heavily towards reception. More modern phones such as iPhone and Driod are skewed towards style.
At the end of the day either the antenna design is "good enough" for your particular locale, or it's not. If it's not, then you option is to buy a phone with a different antenna design.