- Form Factor
Black and Green
Connected to computer and detected network: Blue
Mac OS, WIndows OS
- Data Speed
3G (EVDO REV0, REVA) & 1X
Check out the latest support materials here for your device.
Download user manuals, read FAQs, and upgrade your device's software.
Need Warranty Support?
For warranty support of your Cricket device, please contact Cricket directly at:
1-800-CRICKET (274-2538) or 611 from your phone
or go to
Is the modem compatible with Apple Mac?
What types of computers is the AC3781 modem compatible with?
How to activate the device after inserting
Can I send SMS messages using the USB Modem?
I get a notification, Message sent failed, what should I do?
What’s the capacity does microSD card support of AC3781?
When the Modem is being installed, the notebook cannot find it
When opening the connection, a Firewall Security Alert appears, what should I do?
The modem reports that it’s connecting at 3.1 Mbps, is this the true speed?
Why did my data connection fail?
After restarted computer, there’s no signal all the time, why is that?
Software & Apps
What are the minimum requirements needed to run the software?
No CD in the Box, how can I install the Software?
- Please connect the modem to the PC via the USB interface. You may use the optional data cable to allow optimal positioning to improve performance in marginal coverage areas.
- Please connect the modem to the Mac via the USB interface. You may use the optional data cable to allow optimal positioning to improve performance in marginal coverage areas.
- ClickCricketicon on the desktop.
- Clickicon and run the Setup file.
After inserting the Modem to Vista or Windows 7 , it warns that an unidentified program access. What should I do?
Why the installation program won't not run automatically?
After full installation, what if the system doesn't install the driver properly?
If you have questions about how to use ZTE mobile devices or your device needs repair services, please contact our services hotline or email for more information.