This is how a SIM cardless card works

One of the paper clips or another paper clip might have buckled when trying to trip the SIM card from the cell phone to insert it into a new device. But that should be a thing of the past with eSIM technology.

Because the letter “e” in an eSIM means “embedded”. And that’s exactly what that means: unlike common micro, micro or nano SIM cards, an eSIM is permanently installed in a smartphone – and according to Stiftung Warentest it’s on the rise.

eSIM activated online

Mobile phone providers are now in their wallets not only for contract customers, but increasingly also for prepaid customers. However, if you want to use it, you need an eSIM-enabled device. Mostly the latest smartphone models from popular manufacturers.

By the way, nothing changes when making calls or browsing with an eSIM. Once activated, the chip contains the same data as a traditional SIM card. Dealing is easier, according to Stiftung Warentest. The SIM card is activated digitally and data is also downloaded online.

There is no need to change the SIM card

The eSIM can then be overwritten with new contract data at any time. This becomes interesting, for example, when changing mobile service providers.

If you lose your smartphone, you will no longer have to wait for a new SIM card for the replacement device. If you have purchased a new mobile phone, you can simply upload your SIM data to the eSIM online. SIM cards will no longer be mailed.

By the way: If you don’t want to switch to a cardless eSIM right away despite having a suitable smartphone, you can usually also use traditional SIM cards to insert it.