The built-in WLAN receiver for laptops and smartphones, which is usually stronger?
Laptop.
But that depends of course on the device.
Usually, in the laptop.
You can tell by the fact that on the laptop WLAN networks are displayed, which does not receive the mobile phone due to the range.
For a laptop, the wlan antenna is mostly storage (once moved around the display) so I suspect that the laptop is better. In a cell phone you can indeed install from the square only a smaller.,. Nevertheless, I think that there's no big difference.