IMSI
CATCHER
IMSI CATCHER
Portable IMSI Catcher

In order to meet the needs of the technical investigation work of the public security departments and secu-rity departments, it is necessary to obtain key information of mobile phone users in the designated area. IMSI Catcher is a mobile phone information collecting product, which combines advanced technologies in the field of wireless communication, is a set of police equipment tailored to find criminal suspects for the investigators from security departments.
- Support IMSI, Date and Time, TIMSI, IMEI, Handset model, RSSI collection function for mobile phones in all frequency bands.
- SON, configure frequency/perturbation, start mode automatically.
- Handle multiple BTS simultaneously, detecting minimum 5 IMSIs per second.
- Real time update of data in IMSI database with an easy access through web interface or application.
- Support wireless backhaul via WiFi.
- The management platform supports the status view, device management, and maintenance of equipment, collision analysis, resident population analysis, IMSI accompanying analysis, suspect trajectory analysis, blacklist editing and blacklist alarm; and database export to excel format based on selection of desired time span.
In Vehicle High Power IMSI Catcher

Vehicular active interception system is a vehicular solution that focus on voice & SMS interception and Location for target mobile phone under LTE/WCDMA/GSM network.
This solution adopts the vehicle-mounted form and active working mode. When the target mobile phone is captured and registered to the system successfully, the system can be used to play role as Man-in-Middle and intercept communication content, call and SMS, of specified target. In addition, with individual positioning device, the precise positioning of the target can be implemented.
Unlike traditional active interception system, our system adopts network migration technology instead of jammer to force specified target degrade from LTE/WCDMA to GSM network. The network migration mechanism will affect only the target without disabling surrounding LTE/WCDMA network. In addition to interception and locating, the system also provides other functions under the telecom carrier’s network including IMSI catching, target MSISDN acquisition, black/white list control, forged call/SMS and other analysis features.
- Support simultaneous operation under LTE/WCDMA/GSM telecom carrier network.
- Real time verification and KC evaluation for selected targets.
- Records voice sessions, SMS messages and call related information of selected targets.
GSM PASSIVE INTERCEPTION SYSTEM

The system is a broadband fully passive GSM interception system. It is designed to record the entire traffic occurring between Base Transmitting Stations (BTS) and Mobile Stations (MS) located within the system’s operational range. This means tens or even hundreds of simultaneous calls.The device allows user to scan, analyze, intercept, monitor or record short messages and phone calls from GSM mobiles, regardless of whether they are encrypted by A5/1 or A5/2 algorithm or not.
- Wide monitoring:Randomly monitor voice and SMS of multi-targets of different operators and cells, display caller / called phone number or TMSI.
- Specific target monitoring:According to the parameters of targets, such as TMSI, MSISDN,the device is able to simultaneously identify targets, and intercept voice calls and short messages of multi-targets of different operators and cells.
- Blacklist: after input the number, the system will highlight its audio and SMS for alert.
Active Portable Network Detection Device

The Active portable network detection device is a specialized tool designed for collecting IMSI information from mobile phone terminals
operating on 4G LTE and 5G NR networks, as well as accurately locating specific targets. It finds extensive application in urban villages, buildings, entertainment and sports venues, traffic stations, and other relevant scenarios.
This advanced device enables swift target acquisition and precise target positioning.
- Simulate real wireless broadcast signals, can covertly collect 4G/5G network terminal IMSI information.
- With independent networking function, no radiation and will not affect the normal use of non target terminal.
- Mobile phone APP provides wireless connection, simple interface and easy operation.
IMSI Grabber

C4i offers advanced tactical surveillance solutions, including IMSI Grabbers, MiTM interception devices, and signal detection tools.
These systems support in target identification, call interception, and geolocation tracking across 2G, 3G, 4G, and 5G networks.
The solutions are portable, vehicle-mounted, and cloud-integrated, ensuring real-time intelligence gathering with secure and efficient operations.

