Q: Macbook Pro 13 or iPhone slows down internet of all devices when the charger is plugged in and Wifi is enabled

Hello Everyone, i have an issue here.

When i plug the Macbook Pro 13" (non Retina, 500 gb HD, 4gb RAM) charger and it is whit the Wifi function enabled internet just drop the speed drastically, this is not happening when the Wifi is disabled even plugged in, so the problem comes from the Wireless Funcion indeed, but this shouldn't be like that, im not using any external Screens, bluetooth devices and the cause is not the numer of other devices connections, please dont suggest restarting the modem, this is not the solution and i have tried this millions of times, plus im sure this is the cause.

Another detail about this is that few month before my iPhone was causing the same problam instead the Macbook Pro, operating with (proper and original) charger and connected to Wifi caused the connection extreme slow down.

All this facts point an interference issue caused from the laptop, to the rest of wireless or wired signals.

I have OSX El Capitan 10.11.4

Using a 60W Magsafe Power Adapter.

Paying for 10mb internet and it drops to 0.2 more or less

Huawei HG8245H set to 20/40 Mhz (Auto Channel Width) and every channel i set works great and same way with the issue.

Ill be so thankfully with the people interested on this issue.

(: