Not every drone needs wifi, but some do.
Nowadays, everything is connected to the internet so it won’t be wrong to assume that perhaps drones need wifi connection to function as well. Luckily, there’s no need to connect drones to wifi or cellular service in order to use and operate it, such as taking photos or recording videos with it.
However, you should always connect your drones to the internet to ensure that it’s up to date with all the latest updates and services and new features via the drone’s app. Any potential bugs of the drones can also be resolved by updating it to the latest service so connecting your drones to the internet is a must. There are other functions of the drones that can only work when it’s connected to wifi such as being remotely accessible and to broadcast videos to a phone, laptop or tablet.