CallGSM International Limited.

Callgsm are now proud to present the most advanced roaming solution for both the global Business traveler, and personal user. Our Global Roaming Sim Card is now ready with Multi IMSI solutions for the US Market. Wich gives low cost roaming in and out

Professional Roaming Solution for executive travellers and international cooperates as well as people going for vacations. Using Interligent Least cost routing through our smart phone solutions.

After several years of developing world patents and creating next generation global roaming solutions for the GSM network Callgsm are now proud to present the most advanced roaming solution for both the global Business traveler, and personal user. Th