Boosting Signal Range of Cisco epc3925 Router: Can I Connect a Huawei B315?

Hello
I have a problem with the Cisco epc3925 router in the whole apartment I don't have internet and the operator said that it is the latest generation modem which has the largest signal range .. Now I know with the Petrus company from Toruń you can believe only 2 issues that they do not work on Sundays and public holidays they have a good bajer to catch the customer.

Please, maybe some of you have more knowledge than I did, I wanted to amplify the signal of this device or maybe I will not name it professionally to connect to this router another router what I got after LTE from plus .. Huawei B315.

I planned so:
Cisco that is on a cable in the wall it is difficult to move this device, so it was supposed to send a signal and Huawei was to pick up and forward. It is possible ?

I am not a specialist (IT specialist), please write in very simple language

Regards Kenny.

kennypl wrote:

I don't have internet in the whole apartment

Well, you have no coverage at all or are you weak?

piotrek86 wrote:

kennypl wrote:

I don't have internet in the whole apartment

Well, you have no coverage at all or are you weak?

It looks like this:

Place an additional puntk / WIFI router near the green dots, connected with _KABLEM_ or powerline adapters to the main router (cisco)


Read the WIFI extension alphabet

WIFI antenna - Dependence of the antenna beam angle on the amplification

WIFI propagation in the building

Added after 6 [hours] 32 [minutes]:

bogiebog wrote:

connected _KABLEM_

ie with a network cable aka "twisted pair"

kennypl wrote:

Petrus from Toruń can only believe 2 issues that they do not work on Sundays and public holidays and that they have a good time to catch the customer.

What does the company have to do with the wifi signal?
Cisco modem without external antennas placed in the apartment account and what do you expect? - the laws of physics and the propagation of radio waves in the room have not yet been changed.

kennypl wrote:

Cisco that is on a cable in the wall it is difficult to move this device, so it was supposed to send a signal and Huawei was to pick up and forward. It is possible ?

And Huawaj has an APC function? (Access Point Client - probably not). In addition, to send something over wifi you need to have a reliable and stable wifi signal, and you don't have it.
The network booster option will also reduce your wifi performance by half.

Use PLC and local (where needed) AP (Access Point).