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Casio G'zOne Boulder review

6.1/10 AVG.

Informr score
The Casio G'zOne Boulder currently has an Informr score of 6.1 out of 10. This score is based on our evaluation of 82 sources including reviews from users and the web's most trusted critics.

Casio (in partnership with UTStarcom) has established itself as a fine manufacturer of extremely durable phones with its G’zOne line and the Boulder continues that tradition.

The Boulder is a logical choice for people with demanding professions that keep them in less than ideal environmental conditions. The G’zOne Boulder is military-certified to withstand the elements.

In addition to its rugged build, the Boulder runs at 3G speeds, has a 1.3MP camera, Push-to-Talk, an electronic compass and is wired for V cast Video, VZ Navigator and V Cast Music with Rhapsody. (The aforementioned are services offered through Verizon Wireless and are available for an additional monthly fee).

Regarding the Push-to-Talk (PTT) feature, it’s important to point out that this is a new and improved PTT and should not be confused with the previous PTT offered through Verizon Wireless. People looking at this phone will often be outside and should be aware that the PTT service is considerably better than its prior incarnation.

The Boulder rounds out its feature set with Bluetooth, voice dialing capability, speakerphone, alarm, calendar, video recorder and web access. Talk Time is rated at up to 207 minutes up to 212 hours of standby time.

With the Boulder you can browse the web, send/receive SMS and MMS, take pictures and record video, all without worrying that a strong breeze or a little rain will ruin your phone.

If you need a tough phone, Casio has a solution for you.

Operating system
Screen Size
1+ MP

What the Critics Are Saying...


It's tough to argue with a phone that can be submerged in water and still make and receive phone calls.

- Ricky Cadden, MobileBurn

I'm not going to mince words. This phone is orange. Really orange. Like in the same obnoxious vein as the color options for a new Hummer. But if you can overlook this (as I eventually did), then you'll probably enjoy Casio's new G'zOne, dubbed the "Boulder." That's right - this angular, candy colore...

- Terrence Russell, Wired

The G'zOne Boulder is military-certified to withstand the elements, plus it has EV-DO Rev. A, a 1.3-megapixel camera, Push-to-Talk, an electronic compass, and support for V Cast Video, VZ Navigator, and V Cast Music with Rhapsody.   The G'zOne Boulder is a beefy, rough-and-tumble cell phone w...

- Nicole Lee, Cnet

I would like to know how much is it & can I use it with I wire less Mega talk, is it water proof & shock proof does it take a sims card to?

Prices (Where to Buy)

Common Questions

Casio released the G'zOne Boulder on July 31, 2008.

We've got you covered! Download a free PDF copy of the Casio G'zOne Boulder user manual here.

Casio backs up the G'zOne Boulder with a 1 Year parts & labour warranty.

If your G'zOne Boulder has problems and is still within its warranty period, you could contact Casio support or the retailer you purchased the phone from. You'll find Casio's contact information here. If your phone is off warranty and needs repair for a physical problem such as a broken screen or bad battery, you should visit an authorized service centre or a local phone repair shop. You can also connect with others in The Informr Community Forum to find and share answers to questions.


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Quick view

Screen Size

The Casio G'zOne Boulder's screen size is 2 inches with 240 x 320 pixels resolution.


There is a processor (CPU).


The phone runs on the Custom operating system (OS).

1+ MP

You can take photos with the phone's onboard 1+ megapixel camera.

There's no secondary front camera.

512 MB

Internal memory is 512 MB. An external, MicroSD (up to 8 GB) expansion slot is available for increased storage capacity.


The phone is powered by a Lithium-Ion (Li-Ion), 810 mAh battery.

G'zOne Boulder Specs

Release date July 31, 2008
Regions available USA
Mobile / Cellular Data
850/1900 MHz
1xRTT, EV-DO Rev. A
SIM card size
Dual SIM No
Operating System Custom
Internal Storage 512 MB
RAM 256 MB
Hearing Aid Compatible Yes
Noise Cancellation Unknown
SAR Head: 1.04 W/kg
Body: 0.49 W/kg
Languages No
Manufacturer Warranty 1 Year
Accessories Included AC Charger, Manual, Standard Battery
Power & battery
Battery Type Lithium-Ion (Li-Ion)
Battery Capacity 810 mAh
Removable Battery Yes
Wireless Charging Unknown
Fast Charging No
Video Playback Time Unknown
Internet Use (Wi-Fi) Unknown
Internet Use (Celluar) Unknown
Talk Time Unknown
Standby Time Up to: 2.5 days
Physical Characteristics
Design type Flip
Colors Black, Orange, Silver
Dimensions [H x W x D] 9.9 x 5.1 x 2.3 cm (3.9 x 2 x 0.9 in)
Weight 139 grams
Water Resistant / Waterproof Unknown
Rugged design Yes
IP Rating No
Display / Screen
Type Color
Technology LCD (TFT)
Colors 65k
Resolution 240 x 320 pixels
Pixel density Unknown
Size 2 inches
Secondary Display No
Graphics Yes
Themes Yes
Backlit Illumination Yes
Zoom / Magnification Unknown
Screen Orientation Lock Unknown
Multi-Touch No
Fingerprint-Resistant Coating No
Additional Display Features -
Input / Navigation
Sleep / Wake Key Unknown
Home Key Unknown
Mute Key Unknown
Input Type Standard / 12-key Numeric
Navigation Type D-pad
Predictive Text Entry T9
Physical keyboard Unknown
Voicemail Key No
Any Key Answer Yes
Voice Commands Yes
Keypad/Screen Lock No
External Volume Control Yes
External Media Playback Controls No
Fingerprint Sensor No
Call Management
Wi-Fi Calling Unknown
Voice over LTE (VoLTE) Unknown
Contact List Capacity 500
Multiple Numbers Per Contact 4 numbers, Email address
Contact Groups Unknown
Auto Answer Yes
Voice Activated Dialing Yes
Photo Caller ID Yes
Web / Email / Messaging
Web Browser Yes
Email Client Yes
Email Protocols No
Additional Email Features -
Messaging SMS, EMS, MMS, AIM, MSN
Push-to-talk (PTT) Yes
USB OTG Support No
Infrared No
Bluetooth Yes
Bluetooth Profiles A2DP, AVRCP, DUN, OPP/FTP, HFP, HSP
Bluetooth Audio Codecs SBC
WiFi No
WiFi Encryption No
Mobile Hotspot No
Memory Expansion Slot Yes
Expansion Slot Info MicroSD (up to 8 GB)
PC Synchronization Yes
TV Out No
DLNA Support Unknown
NFC Unknown
Data Tethering Compatibility No
Java Applications No
Brew Applications No
ECML / Digital Wallet No
Main Camera
1+ megapixels
Yes (LED)
Additional Rear Camera Info
Effects, Self-timer
Video Recording Parameters
Front Camera
Additional Front Camera Info
Video Recording Parameters
Audio / Video
Audio Playback Yes
Audio Formats AAC, AAC+, MP3, WMA
Radio No
Video Playback Yes
Video Playback Formats No
Streaming Video Yes
External Speakers No
Headset Jack Other / proprietary
Custom Ringtones No
Vibration Alert Yes
Downloadable Ringtones Yes
Ringer ID Yes
Haptic Feedback Vibration Unknown
Speakerphone Yes
To-Do / Task List No
Calendar Yes
World Clock Yes
Alarm Yes
Stop Watch No
Timer Yes
Calculator Yes
Currency Converter No
Weather Yes
Stocks Yes
Maps No
NotePad Yes
Voice Memos / Recorder Yes
Games Downloadable
Apps No
Included Software / Apps -
Additional comments Other Names (AKA): Verizon G'zOne Boulder, UTStarcom G'zOne Boulder, Casio G'zOne c711

Features: Water, Shock & Dust Resistance, Immersion, Vibration, Salt Fog, Humidity, Solar Radiation, Altitude, Low and High Temperature Storage

Related Links Manual (PDF)
Casio G'zOne Boulder Reviews
Where to buy Casio G'zOne Boulder
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