But the message must contain a specific series of Arabic characters, so you're likely to receive it only as a prank. And there are ways to resolve the problem.
The new Botvac models showcase a tweaked design and promise subtle performance improvements over last year's vacuums.
The 2015 Vizio M series offers 4K resolution and local dimming starting at $600 for the 43-inch size.
The Samsung HU8550 offers our favorite combination of picture quality and features in a 4K TV this year, making it a good value despite the high price.
Samsung's new SUHD TVs promise improved LCD color and brightness, and the only one with a flat screen is the JS8500 series.
Sony has announced what it claims is the thinnest LCD TV in the world. The 55- and 65-inch sizes of the X900C series have cabinets that measure just 0.2 inches thick at their thinnest parts.
In a bid to beat the vaunted picture quality of LG's OLED TVs, Samsung created the JS9500, its best SUHD TV for 2015, which offers a full-array local-dimming backlight.
Samsung's lineup of high-end SUHD TVs includes the JS9000 series, which comes packed with futuristic features including a curved screen and quantum-dot nanocrystals.
LG says its new ColorPrime technology, available on the high-end UF9500 series, improves color to rival Quantum Dots.
The Philips Smart Laser Backlight Ultra HDTV uses intense beams of monochromatic light -- a.k.a. lasers! -- to differentiate itself from other LED LCD TVs on the market.