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The reception and sound quality of the KRZR are slightly better than the RAZR. Voices are clear and had no interference or static, as long as our hand did not completely cover up the bottom of the phone that houses the internal antenna. Doing so will cause a drop in call quality. The earpiece speaker has eight levels of volume, with Medium or Med-High sounding best. The speakerphone is clear and not distorted as long as the volume is not turned up to the highest setting. You can also close the flip while using the speakerphone. We consider the call and voice quality of the KRZR to be equal to that of the LG VX8300, but still does not sound as good as the Samsung A990.

Ringtones must be E-mailed to the phone in MP3 format from a computer. The phone will receive a message and will allow you to save the attached mp3 file. From there, you can go into the Settings & Tools menu and select the ringtone. The Ringtone playback is loud, but since the speaker is on the back of the phone, it muffles the sound. Again, if the speaker was not on the back of the phone, it would improve the ringtone quality.

The battery is 880mAh Li-Ion and is rated to have 4Hr Talk time or 18 Days Standby time. However, we were only able to achieve 3Hr Talk time and 6 Days of Standby time. Since the KRZR is a slim design phone, Motorola does not manufacture an Extended battery that would provide longer talk and standby times. We wouldn't mind sacrificing some extra thickness to the phone if an extended battery was made available.


The new KRZR K1m is a welcome improvement over the RAZR, but the improvements are only skin deep. The features of both phones are practically identical, except that the KRZR has MP3 controls on the front flip and better internal display. The KRZR is also not as wide as the RAZR, but is slightly taller, which improve the overall feel and handling of the phone. Its strong points are the excellent call quality, good construction, MP3 player, and slim design. However, the camera quality is poor, external display is too small, and A2DP Stereo Bluetooth is not supported. The KRZR is the best choice between the two Motorola phones, however a better choice would be the LG VX8300 and Samsung A990. Even though neither of those are as slim as the KRZR, they have better camera quality, higher battery life, and are also constructed well. If you already own the RAZR, the higher price of the KRZR does not warrant the small differences between the two.

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  • Slim design
  • Call quality and reception
  • Internal antenna
  • Clear and sharp internal display
  • MP3 music playback is loud and front controls are easy to use
  • Speakerphone
  • MicroSD memory card slot


  • External display is too small
  • Camera quality is poor and lacks a flash
  • Outdated Verizon menus
  • Fingerprints are easily shown on the front of the phone
  • Metallic keypad reflects sunlight into your eyes making it difficult to see

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