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Xiaomi Redmi Projector 4 Pro specifications and in-depth review

Xiaomi Redmi Projector 4 Pro

Manufacturer: Xiaomi

The Xiaomi Redmi Projector 4 Pro is a compact home projector that brings together wireless streaming and a built-in smart TV platform in a single unit measuring 226 mm wide and 210.8 mm deep. A dedicated smartphone app adds an extra layer of control, while Bluetooth 5.1 keeps wireless audio accessories connected without fuss.

On the technical side, the projector delivers 1080p output resolution with a contrast ratio of 1000:1 and supports projection sizes up to 120″. Connectivity options include one HDMI port, one USB port, Wi-Fi, AirPlay, Chromecast, Miracast, and DLNA certification, while audio is handled by stereo speakers with a combined output of 2 x 8W alongside a 3.5 mm headphone jack for private listening.

Pros
  • Supports AirPlay, Chromecast built-in, Miracast, and DLNA simultaneously, covering a wide range of wireless streaming options
  • Built-in smart TV platform removes the need for an external streaming device
  • Stereo speakers with 2 x 8W output provide dual-channel audio without requiring external equipment
  • Bluetooth 5.1 enables stable wireless connection to audio accessories
  • A dedicated smartphone app offers an additional control option beyond the included remote control
  • Includes a 3.5 mm headphone jack for direct audio output to headphones or external speakers
Cons
  • No HDR support of any kind, including HDR10, HDR10+, HLG, and Dolby Vision
  • Focus must be adjusted manually as neither motorized focus nor motorized zoom is available
  • No lens shift in either vertical or horizontal direction, limiting flexible placement options
  • No ethernet port, making wired network connections impossible
  • Does not support voice commands, requiring physical interaction for all controls
  • No external memory slot, preventing direct playback from memory cards or similar storage
Who is this for?

This projector suits users who want a straightforward home entertainment setup without the need for external streaming devices, thanks to its built-in smart TV platform alongside AirPlay, Chromecast, and Miracast support. Those who rely on wireless workflows will appreciate the broad range of casting options paired with Bluetooth 5.1 for audio accessories. It also works well for casual viewers who prioritize screen size, as the unit can project images up to 120 inches while delivering 1080p resolution with stereo audio built in.

Who is this NOT for?

Users who demand accurate, high-dynamic-range image reproduction will find this projector limiting, as it lacks support for HDR10, HDR10+, HLG, and Dolby Vision entirely. Those who need flexible installation options will also face constraints, since there is no lens shift in either direction and no motorized focus or zoom, requiring precise physical positioning every time. Additionally, users who depend on a wired network connection or need to play content directly from memory cards will be unable to do so, given the absence of an ethernet port and external memory slot.

General info:

has laser light source ✕
width 226 mm
height 155.2 mm
thickness 210.8 mm
Has a dedicated smartphone app ✓
volume 7393.85216 cm³

The Xiaomi Redmi Projector 4 Pro has a physical footprint of 226 mm wide, 155.2 mm tall, and 210.8 mm deep, resulting in a total volume of roughly 7393.85 cm³. It does not use a laser light source, relying instead on a conventional lamp. On the software side, the projector is supported by a dedicated smartphone app, giving users a convenient way to manage settings and controls directly from their mobile device.

Projection quality:

output resolution 1080p
contrast ratio 1000:1
has motorized focus ✕
maximum projection size 120"
has motorized zoom ✕
supports HDR10+ ✕
has manual focus ✕
supports Dolby Vision ✕
supports HDR10 ✕
supports HLG ✕

The projector outputs at 1080p resolution with a contrast ratio of 1000:1, and can fill a screen up to 120″ in size. Focus adjustment is entirely manual, as the unit lacks both motorized focus and motorized zoom. On the HDR front, the projector does not support HDR10, HDR10+, HLG, or Dolby Vision, meaning no high dynamic range formats are available regardless of the source content.

Connectivity:

HDMI ports 1
has AirPlay ✓
Has Bluetooth ✓
supports Wi-Fi ✓
USB ports 1
has Chromecast built-in ✓
has a VGA connector ✕
Bluetooth version 5.1
is DLNA-certified ✓
supports Miracast ✓
RJ45 ports 0
Has S/PDIF Out port ✕

Wireless connectivity is well covered, with Wi-Fi, AirPlay, Chromecast built-in, and Miracast all supported, alongside DLNA certification for local network streaming. Bluetooth 5.1 is also on board for connecting compatible audio devices. For wired connections, the projector offers one HDMI port and one USB port, though there is no RJ45 ethernet port, no VGA connector, and no S/PDIF audio output.

Features:

has stereo speakers ✓
has lens shift (vertical) ✕
has lens shift (horizontal) ✕
has a remote control ✓
has built-in smart TV ✓
has a built-in speaker ✓
audio output power 2 x 8W
has a socket for a 3.5 mm audio jack ✓
has an external memory slot ✕
has voice commands ✕

The projector includes built-in stereo speakers rated at 2 x 8W and a 3.5 mm headphone jack for those who prefer private listening. A built-in smart TV platform is integrated directly into the unit, and a remote control is included for day-to-day navigation. Lens shift is unavailable in both vertical and horizontal directions, and there is no external memory slot or voice command support.

Final Verdict

The Xiaomi Redmi Projector 4 Pro positions itself as a capable entry point for casual home viewing, combining a built-in smart TV platform with broad wireless streaming support — including AirPlay, Chromecast, and Miracast — in a compact, self-contained unit. Its 1080p output, 120-inch maximum projection size, and integrated stereo speakers make it a practical all-in-one solution for users who want simplicity over configuration. That said, the absence of any HDR format support and the lack of flexible installation features such as lens shift or motorized focus mean it caters best to relaxed, fixed-placement setups rather than demanding or enthusiast-level use. For viewers who prioritize convenience and wireless versatility over advanced image processing, it delivers a well-rounded feature set within its category.

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