Unitek R36 Wireless HDMI Display Dongle Review

Casting a screen to a television should be simple and usually is not, because most answers either need an app on every device or lock you to one ecosystem. This takes the dongle route: it plugs into an HDMI port, joins WiFi, and accepts a cast from Android, iOS, laptops and tablets without anything installed on the sending device.

Image quality is specified properly. Unitek quotes 4K decoding with output at 4K 60Hz, and it uses both 5G and 2.4G WiFi bands. The dual-band support is the part that matters in a busy building: 2.4G reaches further through walls while 5G carries the bandwidth a 4K stream needs, so having both means the dongle can pick its battle rather than being stuck on the wrong one.

The feature nothing else in this category tends to offer is the orientation switch. One touch moves between landscape and portrait for a true full-screen display, which sounds minor until you are casting a phone-shot vertical video and watching it sit in the middle of a television surrounded by black. For anyone presenting social content or phone footage, that single button is the reason to pick this.

The body measures 7.2 by 7.2 by 1.7 centimetres, which is small enough to live in a laptop bag permanently and be forgotten about. Unitek lists the finish as grey. There is no base, no power brick in the signal path and no cable run, which is the entire appeal: it disappears behind the screen it serves.

Power draw is described as low, and with no moving parts there is little to go wrong mechanically. The practical consideration is HDMI port access rather than size, because a dongle of this depth needs a port that is not buried against a wall-mounted television. Check your clearance before ordering if the screen sits flush to a wall.

Unitek records a 2 year warranty, with the model given as R36 and the part number as V1162B01. Two years on a passive-looking accessory is a better term than this category usually carries, and it is clearly stated rather than left to a support email.

One note on dimensions. The listing's own dimension attribute does not agree with the measurement in the feature text, and the centimetre figure in the features is the one that describes the device itself rather than its packaging. We have used that.

The setup story is where this product splits in two, and the listing deserves credit for being upfront about it. On Android, laptops and tablets it behaves as advertised: plug the dongle into the HDMI port, connect it to WiFi, and cast. No app, no account, no Bluetooth pairing.

On iPhone and Mac there is an extra step, and Unitek spells it out. You connect your Apple device to the dongle's own WiFi network, open a browser to a local address the listing provides, then choose your internet connection from there. It is a one-off configuration rather than a per-use chore, but it is not what somebody expects when they read plug and play, and it is the single thing most likely to generate a confused first ten minutes. Once past it, AirPlay works.

For meeting rooms and classrooms that trade-off is usually acceptable, because the dongle gets configured once by whoever owns the room and then guests simply cast. For a living room shared between several Apple households, the setup step is more irritating because it resurfaces whenever the network changes.

Resolution behaves as you would expect from the specification. 4K at 60Hz covers video and presentations comfortably, and the dual-band radio is what decides whether you actually get there: a congested 2.4G network in an office will not carry a 4K stream, so put the dongle on 5G where you can. Unitek positions the product for business meetings, classrooms and travel, and that is the honest fit.

What the listing does not claim is low latency for gaming, and you should not expect it. Screen mirroring over WiFi always adds delay, which is invisible for a film or a slide deck and immediately disqualifying for anything you need to react to on screen.