Mobile phones with eSIM have a digital SIM card. An eSIM is built-in, so you no longer need a separate, plastic SIM card. You can take out multiple phone plans on an eSIM. This way, you use your eSIM device as a dual SIM and keep your business and private life separate. These eSIM smartphones are SIM-free. You can buy a separate device from us and use it in combination with any provider that supports eSIM. At this time, not all providers offer eSIM yet, so check this in advance.