Strange tethering operation

[Aldo551]

I have the following operation that I cannot explain to myself:

with my mobile phone I access the 5G mobile data network and have a download speed of 70 Mbps (Speed test ookla). If I connect the mobile phone to the notebook and activate the tethering I get a download speed of about 10 Mbps, while I expect the same speed detected with the mobile phone, therefore 70 Mbps.

What could be the reason for this strange operation?

How can I solve?

[banhien]

@Aldo551 

The specs of your machine is

         https://support.hp.com/au-en/document/c04471091

It only has much slower wifi adapter: 802.11b/g/n (1x1) and Bluetooth 4.0 combo (Miracast compatible) which supports 2.4GHz networks ONLY. Your phone can use wider and faster bandwidth.

You can replace existing wifi adater using Intel Dual Band Wireless-AC 7260 802.11 ac 2x2 WiFi + Bluetooth 4.0 Combo
part # 784650-005 to get better wifi speed.

Regards.

[Aldo551]

Thanks for your answer, but my doubt is another.

I understand the limitations of the wifi connection. But if I tethered by connecting my phone connected to the 5 G network, I am no longer on wifi and I should have the same performance as on my mobile! In fact, when tethering is activated, the wifi icon disappears in the lower right bar of the applications and the ethernet connection icon appears. If the phone connected to the 5G network gives me a download speed of 70 Mbps, I should measure the same download speed from the computer connected to the internet via the mobile phone tethered to the notebook.

It's correct ?