Android 13 may support multiple eSIMs even if the phone isn’t built for it

Phones have traditionally used physical cards called SIM cards to connect to cellular networks, but there has been slow progress when switching to a digital version called eSIM. One of the reasons we haven’t seen more phones skip the SIM card slot altogether is that Android doesn’t have great support for many eSIMs, which would be the first thing most manufacturers would switch to. Needed. The upcoming Android 13 update seems to be laying the groundwork for exactly that.

Esper reports that Android 13’s codebase includes the implementation of a patent filed by Google in 2020 that allows multiple SIM profiles to be used on the same embedded chip. It works by dividing the single physical data bus between the modem and the eSIM chip into multiple logical interfaces that are multiplexed over a single physical interface. This is similar to how most modern CPUs divide physical CPU cores into logical CPU cores, so more tasks can be done at the same time.


Unlike physical SIM cards, which require a large slot on the side of the phone or tablet, eSIM only requires a small component on the motherboard of the device. This leaves more room in the phone for a bigger battery, camera hardware, or anything else. However, there aren’t many phones that omit the physical SIM card slot altogether – partly because many carriers still don’t support eSIM, and partly because many devices sold internationally don’t have any. Requires to have two sims of type. Two eSIMs is an option the iPhone 13 series offers, but it adds more complexity.

Google hasn’t publicly mentioned this functionality yet, but if it stays in Android 13 for the final release, we’ll hear more about it soon. As long as carriers can be reassured, the new functionality could lead to widespread eSIM support in phones.

Source: Esper

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