Noise Issues : Noise is one of the main issues of using WIFI as this makes the tranmission time of data to be slow and the effeciency of transmission become very low as unwanted signals such as bluetooth or microwave in the radio frequency spectrum is present.

Multipath Distortion Issues : A signal has more than one path between transmitter and receiver. Thus other frequency signals have the potential to reflect or refract. This will also result in corrupted data.

Attenuation Issues : Transmission Impairments such as Attenuation will make WIFI signal to lose its signal strength due to travel distance, noise and physical surroundings.

Man-in-the-middle (MITM) : The most common security threat of using WI-FI is known as MITM attacks. Hackers intercept in the middle of data transmission to steal data that is being transmitted without the knowledge of a sender/user. Connections that do not have mutual authentication protocols at both ends particularly vulnerable to these sort of attacks since authentication protocols are specifically designed to ward off these types of attacks.

Packet Analyzers : Also known as packet sniffers are computer software that can monitor traffic on given network. They can also intercept some data packages, and provide info about their contents.

Soft Apps : Hotspots are known as most common soft access points. Users sometimes forget to turn these hotspots off, so the next time they connect to a public Wi-Fi network, the hotspot creates a vulnerable entry point that hackers can exploit. These hotspots can create a serious issue, even if the network is otherwise secure.

Propagation Delay : This delays are present due to the signal requires some time to travel pass a medium. If the distance of propagation is increased, the propagation delay of data will also increase.

Access Delay : Set of devices that share a medium must contend for access

Server Delay : Since Wi-Fi connections are set up in servers, the time taken for a server to review and compute a request and send a reply takes some amount of time based on the specification of the server.

Switching Delay : This delay happens when a device in the network must compute a next-hop for each packet before transmitting.