Freeje Optimum is a calling app for those who looking for additional ⭐ virtual numbers ⭐ as a small call center on their smartphone. Multiple international phone numbers can work at the same time on the smartphone that you regularly use! What can Freeje Optimum virtual SIM do for you and your business? - Save money: There will be no roaming at all for incoming SMS & calling and you don't need to have any long term contracts. Freeje offers a pay as you go credit system with international calls