I once worked for a company that was producing a new line of fiber optic equipment. Two problems: We were having interference problems with one of the boards in the device & The Company had contracts to deliver by a certain date. I watched as the device was sent back and forth between assembly and testing trying to come up with a quick fix to solve the problem eventually It was solved by individually hand soldering wires to make the device ground better. This was not pretty. But that couldn’t be Nokia's problem Good sakes it would take months to hand solder all those devices .