Security officers often use two-way radios instead of mobile phones for several reasons:

Instant communication: Two-way radios provide instant communication between security officers and their team members or other security personnel. This is crucial in emergency situations where quick and clear communication can make all the difference.

Reliability: Two-way radios are designed specifically for communication in challenging environments and can work in areas where there is no mobile network coverage or in areas where mobile networks may be jammed or disrupted.

Durability: Two-way radios are often built to withstand harsh conditions, such as extreme temperatures, moisture, and impacts, which make them ideal for use in a security environment.

Battery life: Two-way radios typically have longer battery life than mobile phones and can be easily swapped out or charged during shifts, ensuring constant communication.

Cost-effective: Two-way radios are generally less expensive than mobile phones, especially when considering the cost of purchasing and maintaining a large number of devices for a security team.

Overall, the use of two-way radios allows security officers to communicate effectively and reliably in critical situations, making them an essential tool in the security industry.