Can I use a WiFi antenna for an LTE modem?

Question

WiFi

There is a Beeline TC-150 router (I don’t know what his nee name was). The router has an SMA connector (one) at the back and very mediocre LTE reception (2600 MHz) in the right place.
Will a WiFi antenna with the appropriate connector fit it, given that it is rated at 2.4 GHz? I didn’t find specialized low-cost lte antennas for 2.6 GHz - all are “like universal 800-2700 MHz” and it seems to me that a clear setting of 2.4 is better. Not?
The question is theoretical for discussion or for the comments of those who checked it.

Answer 1

First you need to look at the current signal levels and LTE speeds in the desired location of the router installation on an available mobile android device.
Signal levels can be viewed with a free software for android - Network Cell info lite
Speeds - speedtest
On w3bsit3-dns.com they write that this router has a problem with wi-fi, signal levels drop dramatically when you are more than 10 meters from the router.

Answer 2

If this is a whip antenna from some kind of router, then in general, it will do. Such antennas have a fairly wide operating range, but not a lot of gain ... And perhaps it will not be better than the built-in one. It might be useful to be able to get higher somewhere sooner...
If it's some more specific antenna, you may not fit in the range or get less gain than the built-in one.