Using a Burner Phone
The term “burner phone” refers to a phone that isn’t your main device and is easily discarded. Of course, us fake spies probably can’t afford to be throwing away phones.
Luckily, an app called Burner, lets you choose a number for just a couple of dollars and “burn” it when you’re done. Perfect when selling old items or giving your number to people you’ll only talk to
Another option is dual SIM. Newer iPhones support a second number through another provider. This can be a great way to keep your personal calls separate from your work calls, while still using the same device.