A virtual telephony platform may establish at least one communication connection with one or more multiple modem array devices that are deployed in one or more geographical regions. The platform may be provided with access to multiple Subscriber Identity Modules (SIMs). The platform may provision a unique device profile to a particular modem in a specific modem array device deployed in a particular geographical region through a communication connection. The platform may further provide the particular modem with a specific SIM profile of a particular SIM of the multiple SIMs through the corresponding communication connection, such that the particular modem is configured to use the specific SIM profile to access a base station of a wireless carrier in the particular region. The platform may further route telecommunication data between a client device and the wireless carrier network in the particular region through the particular modem.