T-Mobile Sonic 4G Mobile HotSpot review: T-Mobile Sonic 4G Mobile HotSpot

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CNET Editors' Rating

3.5 stars Very good
  • Overall: 7.7
  • Design: 8.0
  • Features: 8.0
  • Performance: 7.0

Average User Rating

1 stars 2 user reviews
Review Date:
Updated on:

The Good The compact and good-looking T-Mobile Sonic 4G Mobile HotSpot offers mobile Internet access for up to five Wi-Fi clients via T-Mobile's 4G and 3G networks. The device has long battery life, works as a tethered modem, features an SD card slot, and supports text messaging.

The Bad The T-Mobile Sonic 4G Mobile HotSpot data speeds could use some improvement, comparatively. Its included limited data plans are rather expensive, and the router's connection speed is throttled when the monthly data caps are reached.

The Bottom Line Well-designed and reliable, the T-Mobile Sonic 4G Mobile HotSpot makes a very good travel companion.

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The T-Mobile Sonic 4G Mobile HotSpot is just slightly larger than the previous version, the T-Mobile 4G Mobile Hotspot ZTE MF61 . To make up for this, it supports T-Mobile's faster 4G data speeds of up to 42.2Mbps down and 5.76Mbps up, which was first introduced with T-Mobile's Rocket 3.0 4G Laptop Stick .

This doesn't mean the router necessarily offers better cellular data speeds at all times, however. In fact, in our testing around the San Francisco Bay Area, the Sonic was, on average, actually slightly slower than the ZTE MF61. But the truth is that the speed of a cellular connection varies a great deal from one location to another, and we find the Sonic's performance, though not as stellar as we wanted it to be, acceptable. It's fast enough for basically any Internet applications.

Similar to other T-Mobile mobile access devices, the Sonic offers concurrent Internet access for up to five Wi-Fi devices and comes with limited data plans; when the caps are reached, the device's connection speed will be significantly throttled for the rest of the month. All things considered, at $100 (after discounts, rebates, and with a two-year contract), the T-Mobile Sonic 4G Mobile HotSpot will make a very good investment for those who travel frequently. If you're looking for a 4G device that comes with a more affordable and unlimited data plan, we'd also recommend that you check out the Apollo from Clear .

Design, ease of use, and features
The T-Mobile Sonic 4G Mobile HotSpot has a candy bar design, with a sleek casing that measures just 4.02 by 2.2 by 0.61 inches. It's also very light at just 3.88 ounces. On one side, the devices has a power button that you need to press and hold for a few seconds to turn it on or off, and a WPS button, which allows you to add wireless clients to its Wi-Fi network.

The device has a tiny OLED display on the top that manages to show all important information, including a battery gauge, cellular connection status/signal strength, and the number of connected Wi-Fi clients. The display turns itself off after a few seconds but will come up immediately with a quick press on the power button.

The bottom of the device can slide open to reveal the 2,200mAh battery. The device ran for 7 to 9 hours during our testing, depending on how heavily we were using the Internet. That's actually one of the best battery life scores we've seen among mobile routers of this size, thanks to the router's smart standby mode that puts the router to sleep when there's no connection and immediately brings it back on when there's a data request. In our trials, the router's battery can actually last for days when used sporadically. With other mobile hot spots we've seen, you have to manually bring it out of standby mode by pressing on the power button before you can use it again.

Near the battery are the SIM slot and a microSD slot that can host a card (not included) of up to 32GB. At one end, the router has a Micro-USB port that both charges the device (a cord is included) and allows you to connect it to either a PC or Mac, so it can be used as a tethered modem. When connected to a computer, the router also charges the battery and acts as a card reader.

When the battery bay is opened, you'll also find a label with the device's default wireless network and the encryption key printed on it. With this information, all you need to do is turn the router on, connect Wi-Fi clients to the default network, and you're set. As long as you're within T-Mobile's coverage, you're connected to the Internet.

The router's Wi-Fi network's settings, as well as other settings can be change via its Web interface. To access this, from a connected computer, juts point the browser to the router's default IP address, which is 192.168.1.1. The default password to log in is admin.

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Where to Buy

T-Mobile Sonic 4G Mobile HotSpot

Part Number: CNETCNETTMOBILESONIC
Pricing is currently unavailable.

Quick Specifications See All

  • Regional specs shown for US. UK specs are unavailable.

  • Remote Management Protocol HTTP
  • Data Transfer Rate 42 Mbps
  • Connectivity Technology wireless
  • Weight 3.9 oz