Ok here's a geeky answer.

A candle is a roughly 2000K black body radiator. That means (assuming I did the calculation right), that it gives off only about 0.5% of its total power in the visible range, since it's relatively cool.

The standard for light output used to be based on candles, and so there's still a unit around called a "candela," which is based on the light output of a candle. Working from this value, the visible light output by a standard candle is roughly 0.018 Watts.

If the other 99.5% of the energy is output as radiation other than visible light, that means that the total output of the candle is somewhere around 3.7 Watts.

There's a lot of assumptions here, but this number is probably in the right ballpark of a candle's power output.

A cell phone can operate at a max power of 2 Watts, according to Wikipedia. This is similar to the power output of a candle. But a cell phone doesn't operate at this power all the time, while a candle does. The candle probably emits more power.

So in the end, I did a lot of math only to find out Geezer was probably right. I hate it when that happens!