There are a few fields that could be interesting for hardware engineering:
- Computer vision: the main tasks are object detection and classification which is widely used in quality control, process monitoring, ...
- Data analysis: most factories these days have quite a lot of data, using data analysis you can understand where the inefficiencies lie or what could be improved (this is normally a pure numerical analysis)
- Robotics and automation: heavily rely on AI for tasks like path planning, object recognition, and control
- Reinforcement learning is used in fields like autonomous vehicles and game playing. Normally requires very accurate simulators, that's why it's not widely used.
Those are just some examples, my experience is mainly with autonomous vehicles, so I might be biased towards the technologies used there.
I use the Realme GT Neo 3, if you ask me why the main reason probably was the spec sheet. But if I were to buy another one right now I would probably go for a Pixel just for the camera.
What do you look for in a phone? Right now I only care about battery and camera.