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Helio Mysto Review

Samsung SPH-A523

Posted: , posted by PhoneArena Team



Helio Mysto Review
Even though the overall build quality of the Mysto has a flimsy feel to it, we are pleased that Samsung did not lower the bar regarding the reception and call quality. We were able to maintain an average of 4-5 signal bars around most of South FL, with the exception of fringe areas that dropped down to 0-1 bars. There were only a few remote locations that calls actually did get disconnected, but that is to be expected.

The call quality through the earpiece speaker was clear and natural sounding, without any background noise or interference. People that we called on a landline stated that the Mysto produced good sound quality for outgoing calls, with our voice being clear and lacking any interference. The only problem we encountered was when raising the earpiece volume past level 4 to 5. In doing so, the speaker would start to sound distorted due to the higher volume, which is also true when using the Speakerphone. However leaving the volume at level 4 or lower does not cause this problem and eliminates the distortion.

Samsung rates the included 880mAh battery to provide up to 3.5 hours of talk time, or 8 days of standby time on a full charge. Our testing showed the Mysto to get 4 hours of talk time on a full charge.


The Helio Mysto is for the average consumer that is looking for a slim and stylish mid-range phone, without the added features and weight of the Helio Ocean. Unfortunately, the overall construction feels cheap, and does not seem like it will hold up to a lot of abuse. The d-pad and numeric keypad can be difficult to use at times, and the 2MP camera is not the best currently available. However, the phone does come with large QVGA display, HTML browser, java application support, and good voice quality. Those are the areas where the Mysto truly shines.


  • Good Voice Quality and Signal Reception
  • HTML Browser
  • Customizable home screen
  • Comes with USB Cable and Stereo Earbuds


  • Device feels cheaply made
  • Numeric keypad is not designed well
  • D-Pad is smaller than average
  • 2MP camera has poor quality
  • Low music quality when played through earpiece
  • Only one theme installed
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PhoneArena rating:
Display2.2 inches, 240 x 320 pixels (180 ppi) TFT
Camera2 megapixels
Size4.10 x 1.90 x 0.48 inches
(104 x 48 x 12 mm)
3.35 oz  (95 g)
Battery880 mAh, 3.5 hours talk time

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