Yes, Unity game development is still a fantastic choice for mobile games and for the right reasons too! First, Unity has cross-platform capabilities; developers can build once and deploy to both iOS and Android (usually with minimal modifications). Secondly, Unity has a huge Asset Store and active community, which allows developers to find most ready-made solutions for many things that would normally take time to build plugins for and support.
When it comes to performance, Unity is getting better with better rendering and optimization tools, and AR/VR features are also becoming very relevant in mobile gaming. If your studio partners with an experienced Unity 3D game development company, it will simplify the entire process, making sure that the mobile games can easily scale and be exciting for international and global audiences.
That being said, the choice will be dependant on the type of project as well. If you're building hyper-casual and mid-core mobile games, Unity is a fantastic option. If your project is aT high-fidelity 3D title then you might consider Unreal, but as a whole, Unity is the leading option for mobile game development in 2025.