As the others have commented, you really would want to use an oven. A hot air tool cannot give the volume of heat required to bring everything up to the right temperature. Note that your mobile module is itself a pcb with components on it and needs special care in regards to the temperature and the temperature profile. They also have substantial thermal mass.
You might be able to solder the connector with a hot air tool, but I’d expect you’ll melt one or two practicing.
Unless you have access to an oven I’d suggest using the various boards that have the module and required parts already soldered for you. Believe me, even with an oven it is a challenge. If something doesn’t work you’re left pondering if it is a fault with the module, the soldering, the pcb, the layout, the components , software and so on. I have a graveyard of dead modules as evidence.