can a phone charger has only two power wires + and -, without data lines?

[Android Central Question]

for charger only.

 

[belodion]

If it can, why are there many connections in the USB port, not just two? There must be a good reason that they’re made like that.

 

[Kodak2]

It can, but there is no point in manufacturing a lead with just 2 connections, it would be more expensive due to limited demand.