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Sprint MM-5600 by Sanyo

 & Sascha Segan Former Lead Analyst, Mobile

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology.

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 - Sprint MM-5600 by Sanyo
4.0 Excellent

The Bottom Line

A big phone with big sound and a big feature set, this is Sprint's most powerful phone that isn't a smartphone.

Pros & Cons

    • Spectacular screen.
    • Loud speaker and speakerphone.
    • Excellent PC connectivity.
    • Good voice recognition.
    • Big.
    • No e-mail.
    • PC syncing requires third-party software.
    • Photos show compression artifacts.

Sprint MM-5600 by Sanyo Specs

Bluetooth: No
Camera Flash: Yes
Camera: Yes
Form Factor: Flip Phone
Phone Capability / Network: CDMA
Physical Keyboard: No
Screen Size: 2.1 inches
Service Provider: Sprint

The Sanyo MM-5600 is Sprint's top-of-the-line phone for a reason: It's packed with features and built with quality, and this combination makes it the carrier's best handset.

The MM-5600 is a long, serious-looking flip phone with an impressive speakerphone grille and a tiny color screen on the front. It won't win any awards for looks, but it isn't embarrassingly unattractive either. Convenient side buttons let you change the volume, trigger voice dialing, turn on the camera, or activate Sprint's Ready Link push-to-talk system with the flip closed.

The MM-5600's excellence shows when you first flip it open and see its 240-by-320 screen, which is an extremely high resolution for a phone that isn't a smartphone. (Smartphones are high-end phones with a built-in OS, such as Symbian or Microsoft Windows.) The screen is simply breathtaking: bright, razor-sharp, and utterly beautiful. It even makes reading text on WAP pages almost fun.

Like other Sanyo phones, the MM-5600 has an extremely loud and strong earpiece and speaker. Voice-transmission quality was unusually good, and signal reception was excellent. Voices sounded a little muddy until we moved the phone down on our ears a bit, which fixed the problem. With analog roaming capability, you're not limited to Sprint's all-digital network, either.

Want more features? VoiceSignal speaker-independent voice recognition combines with a top-notch speakerphone for an excellent hands-free experience. High-quality ringtones (in the AAC music format) sound clear, picture caller ID looks good, and the MM-5600 is Sprint's first phone to support video ringtones (though we're not sure what their use is, because you can only see the videos when the phone is flipped open.)

The MM-5600 has unusually good multimedia and PC-connectivity features. The phone takes Mini-SD memory cards and, when you plug it into a PC, the card appears as a hard drive on a Windows XP desktop. No muss, no fuss, no software installation. Uploading and downloading pictures, videos, and MP3/AAC music files is the easiest we've ever seen on a phone, though you can't upload ringtones from your PC to the phone or sync your address book without third-party software.

Speaking of pictures, the 1.3-megapixel camera is moderately sharp with well-balanced colors, but suffers from distracting compression artifacts. (Check out our camera phone gallery and see for yourself.) Videos look extremely compressed.

The phone's built-in music player supports unprotected MP3s and AACs and has a shuffle mode, but no playlist support. Music sounded great through our wired headset. You can also watch Sprint's streamed MobiTV channels. Those come through smoothly, but appear extremely compressed. (The culprit here isn't the phone but Sprint's relatively slow network.) The MM-5600 can definitely handle high-quality multimedia and games: It did well on the JBenchmark Java benchmark tests, especially considering its high-res screen.

Unfortunately, Sprint bars real IM and e-mail clients from its phones that aren't smartphones, forcing subscribers to go through a WAP portal. That's not Sanyo's problem, however. Once again, it's a Sprint issue. The phone could also be a little smaller, picture quality could be a little better, and we'd love to see Bluetooth here. But these are mere quibbles. If you have the cash, the MM-5600 will make the most of your Sprint subscription.

Benchmark tests: JBenchmark 1: 2272 JBenchmark 2: 109 Continuous talk time: 4 hours 9 minutes

Benchmark test results:
Jbenchmark 1: 2272
Jbenchmark 2: 109
Continuous talk time: 4 hours 9 minutes

More mobile phone reviews:

Final Thoughts

 - Sprint MM-5600 by Sanyo

Sprint MM-5600 by Sanyo

4.0 Excellent

A big phone with big sound and a big feature set, this is Sprint's most powerful phone that isn't a smartphone.

About Our Expert

Sascha Segan

Sascha Segan

Former Lead Analyst, Mobile

My Experience

I'm that 5G guy. I've actually been here for every "G." I reviewed well over a thousand products during 18 years working full-time at PCMag.com, including every generation of the iPhone and the Samsung Galaxy S. I also wrote a weekly newsletter, Fully Mobilized, where I obsessed about phones and networks.

My Areas of Expertise

  • US and Canadian mobile networks
  • Mobile phones released in the US
  • iPads, Android tablets, and ebook readers
  • Mobile hotspots
  • Big data features such as Fastest Mobile Networks and Best Work-From-Home Cities

The Technology I Use

Being cross-platform is critical for someone in my position. In the US, the mobile world is split pretty cleanly between iOS and Android. So I think it's really important to have Apple, Android and Windows devices all in my daily orbit.

I use a Lenovo ThinkPad Carbon X1 for work and a 2021 Apple MacBook Pro for personal use. My current phone is a Samsung Galaxy S21 Ultra, although I'm probably going to move to an Android foldable. Most of my writing is either in Microsoft OneNote or a free notepad app called Notepad++. Number crunching, which I do often for those big data stories, is via Microsoft Excel, DataGrip for MySQL, and Tableau.

In terms of apps and cloud services, I use both Google Drive and Microsoft OneDrive heavily, although I also have iCloud because of the three Macs and three iPads in our house. I subscribe to way too many streaming services. 

My primary tablet is a 12.9-inch, 2020-model Apple iPad Pro. When I want to read a book, I've got a 2018-model flat-front Amazon Kindle Paperwhite. My home smart speakers run Google Home, and I watch a TCL Roku TV. And Verizon Fios keeps me connected at home.

My first computer was an Atari 800 and my first cell phone was a Qualcomm Thin Phone. I still have very fond feelings about both of them.

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