This feature continuously compares the main network identifiers and triggers an alert whenever it detects an abnormal change to the Cell ID, ARFCN and RSSI parameters caused by a GSM-Interceptor forcing a connection.
A GSM-Interceptor will use BCCH manipulation to force mobile phones to connect. This means that the interceptor will leave some network identifiers unchanged (MCC, MNC, LAC) and change others (Cell ID, ARFCN and RSSI) to “trick” the phones into connecting. Using complex algorithms, the phone will continuously compare the main network identifiers (MCC, MNC, LAC, Cell ID, ARFCN and RSSI) and trigger an alarm whenever it detects an abnormal change in the Cell ID, ARFCN and RSSI parameters.
In standby mode, the phone displays a warning icon (open lock) if it is being monitored by GSM-Interceptor. Please note that the phone does not detect fully passive GSM-Interception systems.
This feature will display an (open lock) icon which means your calls and messages are not anymore protected by GSM A5/1 encryption as usual and your phone is subject to an active interception. No sound or vibration alert. Please note that in case of interception carried out by your GSM provider (network operator), the open lock icon will be displayed only during the call.
This feature allows users to send/receive encrypted AES based messages between two XCell Basic v2 Stealth Phones. No internet connection required.
In case of an interception alert, you can send encrypted SMS messages. The encryption algorithm is AES-256 and has the ability to generate keys from passwords is SHA-256. This is end-to-end encryption, which means that no one can read your messages. They can only be read by the recipient with the correct password.
Note: Encryption only works if both the sender and receiver are using XCell Basic v2.
XCell Basic v2 is protected from forensic investigation by volatile USB filters. No forensic device can extract data or files from the Stealth Phone. As soon as the Stealth Phone is connected to such a device, a PC or a service box, the volatile USB filters trigger a self-destruction of the motherboard, and the Stealth Phone goes into protected mode (permanent boot loop).
XCell Basic v2 is able to detect any changes made by a GSM-Interceptor to a GSM network in order to register or attract the phone to the fake network (GSM-Interceptor Proximity Alert). The registration of the phone on a new BTS (the fake BTS generated by a GSM-Interceptor) is an automated process and this behaviour is absolutely common in any mobile phone.
