Spitz GL-X750 Version 2 with slow speed

[D.Walker]

Hi there.

I recently bought the Spitz GL-X750 Version 2, Firmware 3.217, 2023-05-08.

I put in my SIM Card (o2 germany 5G Card - speed is up to 300MB download) and start the router.
It connected out of the box to the internet but the speed is pretty poor. I only get round about 16Mbps download and 7Mbps upload.

If I use the same card in my iPhone (reduce the connection in the settings to LTE only) at the same location I get much more speed - up to 50Mbps and much more.

Is the router limited in any way? How can I speed up the connection at least to 30Mbps?

Any ideas or is this not possible and I have to buy another router?

Thanks in advance for your help

[alzhao]

Can you upgrade to firmware 4.x?

Can you give some screenshot to show the signal levels on the router etc?

[D.Walker]

Thank you for your answer.

The web admin panel did not offer me a newer firmware than the one I have.

But I found here a 4.x firmware - GL.iNet download center

=> 4.3.11 from 2024-03-20

Is this the one you want me to flash?

Can I flash it via my tablet using the admin panel?

[D.Walker]

Ok, I flashed the actual firmware mentioned above.

Enlosed I add 4 screenshots. Do you need more?

If yes, which one you want?

Thank you for your help