the antenna amplifies ONLY the 3g and 4g signal

the wifi is strong enough to get through a wall or floor. for wifi i would use a repeater with 2,4 and 5ghz that can do crossband repeating. cu

Hello everyone, many thanks for the valuable information :-) Then the antenna is just right for me and will be ordered right away!

Agree with MyCu (above). It's about 3G and 4G. That's where the thing really helps. Unfortunately, it's not enough to get a stable connection on the train either. But I could have guessed that myself. Stationary great (in the holiday home with a scarce signal).
Greetings - ck

Can anyone tell me from experience what this 2.5 dB gain brings??? I usually have 2 out of 4 bars on the signal strength at my hotspot and would like to get to 4 out of 4....
Or is the antenna not suitable for this???