Wi-Fi problems with Android?

I have a 400 mbt / s line and a Fritzbox 7490 at home. I own a Xiaomi Mi 9T Pro and only have 10 to a maximum of 50 mbt / s in the download.

If I switch the WLAN on my smartphone off and on again, then I have 250 to 400 mbts / s in the download. After about 10 minutes I'm back to 10 - 50 mbts / s until I switch my WLAN on again on and turn off.

It is exactly the same for a Huawei Mate 20 Lite and a Samsung Galaxy A70. Only the new Poco F3 has a constant 300 - 400 mbt / s in our WLAN.

Why is that? I can hardly restart my WLAN on my smartphone every 10 minutes in order to have good internet. Before I tried restarting, we thought it was up to the provider.

Do you use both 2.4 and 5 GHz Wi-Fi? Then that would be the reason.

The 5 GHz WLAN is more powerful, i.e. Faster, but the range is significantly shorter.

If the cell phone notices that there's a stronger 2.4 GHz WLAN network, it will probably prefer that so that the connection is more stable. This should not happen if you use the mobile phone directly on the router (without a wall in between). And if it does, I tend to think that the phone's default settings are to blame.

In the settings of the router you can set which networks are available (and usually also which network should reach which device).

To test, you can simply deactivate the 2.4 GHz network and monitor the speed.

If it is not due to the networks, then it is probably due to the wireless antenna of the cell phone or the software settings.

So I only have one router in the house that sends at 2.4 GHz. My download speed is also very slow right in front of the router. I hardly think that all of us in our household have problems with the Wi-Fi antenna on our smartphone. In our house: Huawei Mate 10 Lite, Samsung Galaxy A70, Xiaomi redmi Note 8t and Xiaomi Mi 9T Pro. Everyone has the same problem. I don't know what other settings can be changed on the smartphone… Well, thanks anyway.

The transmission rates you specified are practically not possible in normal 2.4 GHz networks. 50 Mbit / s seems realistic to me. https://de.wikipedia.org/...ndurchsatz

Can I see outside of the router (on the smartphone) whether it is transmitting in 2.4 GHz or 5 GHz? Well, why should I lie? When I restart the WLAN on my smartphone, I have up to 399 mbt / s in the download. After a short time, the value is back to approx. 50

Of course you don't lie, otherwise you wouldn't be asking here.

Since you are a Fritz! Box, I always recommend the appropriate Fritz! -Apps from AVM. Here: https://play.google.com/...l=de&gl=US.

There you can see on the start page which network you are connected to and on which channel. The signal strength is also recorded live there.

I would be interested to know whether you are actually only connected via 2.4 GHz, even if you have such fast rates at the beginning. Data rates over 200 Mbit / s are more likely to be attributed to LTE than to the "old" slow WLAN.

Or you're lucky and your router squeezes out the 2.4 GHz Wi-Fi without any loss, then theoretically it could even be. Personally, however, I can't imagine it.

I downloaded it. Have attached pictures. Times 2.4 times 5, as you said… How can I stop that?

I just took a look at myself, apparently you can in the Fritz! Box do not choose the different networks for each device. So you would have to deactivate the 2.4 GHz network in the router, which would mean that other devices that do not support 5 GHz can no longer be reached.

Unfortunately, I don't know whether this can be set in the cell phone.

The https://avm.de/...-aufrufen/ would then be:

WLAN → radio network → active frequency bands

Addendum: If you are in the above menu, you can see the currently connected devices at the top and see whether they are connected to 2.4 or 5 GHz. If you don't have a device that relies on 2.4 GHz, you can safely deactivate the network.

All devices in the network are shown to me there, but only the IP address…

Strange. You can of course just give it a try. If you deactivate 2.4 GHz, the devices that rely on it will immediately no longer be connected. If you don't notice anything about it, nothing speaks against it.

5 GHz has a shorter range, so you may have to struggle with dropouts every now and then if the distance is too great.

Ultimately, the cell phone should be smart enough to keep the fastest network possible.