How many numbers can I register in my account? You can activate up to five numbers in your account. Did this answer help you? Back Related articles Can I also order an eSIM or a multi SIM? Can I use the app independently of the SIM card (SIM in device 1, app on device 2)? How can I hide my phone number? Can I use an eSIM with an Apple Watch? Why was I sent a SIM card from yallo?