What is the difference between laptop and cell phone on Wi-Fi?

I have strong Wi-Fi that is good with a cell phone but not with a laptop

Antenna, driver, utilization of the CPU, the location of the laptop…

There are tons of reasons

This is due to the WLAN module. Better modules have a stronger and more extensive connection

If you use both at the same time then you only have good Wi-Fi on one device

To refute that I only say public Wi-Fi

As Rikks and User16499 have already written, this can be due to the different hardware and location of the laptop, and the selection of the Wi-Fi network (if 2.4GHz and 5GHz are both available together) can play a role.

Most notebooks, like cell phones, usually have relatively good Wi-Fi reception (in contrast to normal PCs), since the Wi-Fi antenna is usually routed around the display / screen. If you have poor Wi-Fi reception despite the short distance and no obstacles in the laptop, it could be that the antenna is either too short (only on the module as a short conductor path) or the antenna is not connected to the module at all. If you have a clue, you can check whether the antenna is connected to the inside of the Wi-Fi module, if not someone who has the clue should do so (the notebook will probably have to be unscrewed).

Unfortunately, Wi-Fi is severely limited in transmission power and, due to the high frequency, is also very susceptible to shielding from walls and other technical devices.

Then the network card in the laptop may be useless.

Or it is due to the location that the Wi-Fi reception is poor.

So all is well and good, but my laptop worked well until today and suddenly thanks anyway for the nice answer and greetings sepp

The notebook is now completely out or the Wi-Fi?

With older devices, the power supply inside is usually defective, then the funniest errors can occur, such as spontaneous crashes, Wi-Fi dropouts or the device no longer charges, etc.

But the device should be a bit older and out of warranty. In such cases, usually only the manufacturer's service or other repair service can help.

But clarify the possible costs beforehand.