Hi Zero-One,
Several electrical equipments can influence the performance of WD livewire (powerline adapters - PLCs). Mobile phone charger is one of the device that can influence the performance (degrade the transfer rate of the PLC), Besides this device other devices like the air-cons, vacuum cleaner, hair drier, laptop charger, light dimmer, power drill can also reduce the transfer rate (throughput) of the WD Livewire. To track this performance, WD Livewire does have a utility CD that you can install in your pc or laptop to track or monitor the throughput of WD Livewire performance.
Hope this answer your question Zero-One
Cheers!