It is necessary that the router was able to connect an external 3G/4G antenna and WiFi antenna
Never met a router which includes a WiFi module and 3G/4G .
One or the other
If you want 3G/4G and WiFi and even with external antennas - two pieces of iron need to buy.
For example, for 3G/4G https://mikrotik.ru/katalog/katalog/hardware/wifi_...