Display & Audio
The P50's functionality is really centered around its 2.8" touchscreen. Capable of displaying 65,00 colors at a QVGA resolution of 240 x 320, the screen is not quite state of the art, but is more than sufficient for a handheld. The touchscreen functionality works well, and the Windows Mobile software includes user calibration functionality. As with most handhelds, the screen exhibited some readability problems in direct, bright sunlight, but in general performed quite well. Benq includes a peel-off screen protector with the phone, and I highly recommend its use to keep the screen scratch-free. A cleaning cloth and leather case with belt clip case are also included.

Call quality on the P50 was good. With the one exception of a friend who said I sounded "like I was calling from a wind tunnel," I experienced satisfactory results using the earpiece, handsfree stereo headset, and built-in speakerphone. The quad-band 850/900/1800/1900 MHz GSM radio performed well on T-Mobile's network in the San Francisco area, pulling in reception on par with other quad-band phones I've tried in this area.
Stereo audio played using the included Windows Media Player software sounded good using the included stereo headset. As mentioned before, the P50 has a 2.5mm headset jack, which is standard for mobile phones but not compatible with standard 3.5mm stereo headphones.
The P50 also paired easily with Bluetooth headsets, though stereo Bluetooth is not supported. Audio quality of calls over Bluetooth was quite good.
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