Does it work with iPhone?

Yes for Bluetooth calls and audio streaming. It does not offer CarPlay on most versions, so iPhone users get less app integration than with a CarPlay unit.

Does it need a internet connection for navigation?

No. Built-in GPS works offline once maps are downloaded. Live traffic and streaming apps need a phone hotspot or a data SIM.

It fits most double-DIN dash openings, but many cars need a model-specific dash kit and wiring harness. Check your car's opening size before buying.

Can I keep my steering wheel controls?

Often yes, with a CAN bus adapter or steering-wheel interface for your car. That adapter is usually sold separately.

Is it better than a name-brand Android unit?

It offers a bigger screen and more features for the money, but Pioneer, Kenwood and Sony units generally sound better and get longer software support.

Typically the head unit, wiring harness, GPS antenna, external microphone and basic mounting hardware. Dash kits and adapters are usually not included.