In the past, Geth was released for Android and IoS to support embedding clients into mobile applications. However, the move to proof-of-stake based consensus introduced the need for a consensus client to be run alongside Geth in order to track the head of the blockchain, breaking the ability for Geth light clients to run on a mobile device and handle API requests from mobile apps.
Supporting mobile app development is [no longer part of Geth's remit](https://github.com/ethereum/go-ethereum/pull/26599) but it remains possible for other teams to devise ways to build on Ethereum in a mobile environment.
