The Huawei E5577Cs-321 Mobile WiFi Hotspot Device

The HUAWEI E5577Cs-321 has been dubbed as one of the best mobile Wi-Fi hotspot devices in the market. The only noticeable difference is the design, which is smaller making it more portable. The operation is just like any standard router. You can also share your Wi-Fi network with other users, as long as you give them the passcode.

The HUAWEI E5577 is excellent for those traveling, as it helps you avoid unnecessary hotel internet charges, whose networks don’t support tethering to your laptop or smartphone. Here are some of the features at a glance.

HUAWEI E5577Cs-321 Hotspot Device Review

Huawei E5577Cs

Here, we will be discussing the major features like appearance, operation, and network technology, amongst other features.

Design and appearance

The HUAWEI E5577Cs-321 hotspot device is available in both black and white color variants. It comes in a white cardboard box packaging. We also noted that the battery is packaged separately and not loaded inside the device. In addition to that, there is a short USB cable for charging the device, though the power adapter is missing and has to be purchased separately.

To minimize costs, you can connect the USB cable to the power adapter of your smartphone and you are good to go. The dimensions and the weight of the hotspot device make it compact and lightweight, making it more portable and easy to carry it around as you travel. It can comfortably fit in your purse, backpack, and pocket. To insert the battery, Memory card, and SIM Card, you have to remove the battery cover.

The LCD Display is excellent for viewing battery status, network strength, and connections. One of the advantages of using the HUAWEI E5577Cs-321 mobile hotspot device us the ability to use an external antenna in case you enter an area where the signal is weak.

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HUAWEI E5577Cs-321 Operation

It takes a few seconds to power on the hotspot device; you only need to press and hold the power button. The router automatically detects and configures the system with the available inserted SIM Card. You don’t have to worry about the security of your hotspot network, as it comes encrypted and the passcode is found on display or in the battery bay. The MENU button can be used to set the frequency band of your choice.

In case you need to access other settings, then you need to download the HI Link App from your smartphone, which is supported by both IOS and Android systems. When connecting the web interface to the device, you need to use the browser address as the gateway. Here you will find the device statistics and data traffic; you can also receive and send SMS via the interface in addition to sharing folders and files which will be stored in the internal Micro SD card available in the packaging.

As long as you activate your Wi-Fi voice calls, then you can make and receive calls without roaming charges in the US. If you want to update your device configuration, press the menu button, and follow the prompts. Once updated, you can configure different options for WLAN Networks. The operation of the HUAWEI E5577Cs-321 is quite easy to set and operate, even if you don’t have any technological background.

HUAWEI E5577Cs-321 Network

The HUAWEI E5577Cs-321 mobile hotspot supports both LTE category 4 and six network speeds, with the latter being the newest technology. This technology means that the E5577Cs-321 can achieve top speeds of 140Mbits/s and 50Mbits/s in both downlink and uplink. In addition to that, you can use a data accelerator known as DC-HSPA+ when connecting to UMTS networks to achieve even higher data speeds using the hotspot device.

Higher data speeds mean that you should opt for a larger unlimited mobile hotspot plan with your service provider. The only disadvantage of the HUAWEI E5577Cs-321 is that you cannot configure it so that you can use a specific network technology. The only way out is to use the LTE on and off button when switching to particular network technologies.

Features of the HUAWEI E5577Cs-321 Hotspot Device

  • It comes with a built-in WLAN Antenna
  • Weight; 82g (plus battery)
  • Both automatic and manual network registration and selection
  • Dimensions 96.6mmX58.0mmX13.5mm
  • A standard Micro SD card interface
  • Lithium-ion rechargeable battery (capacity 3.8V, 1500 mAh)
  • Standby time of 300 hours
  • 6 hours of maximum operation time
  • 128MB internal memory
  • 128 Pixels LCD/TFT Screen display
  • Built-in DNS RELAY, NAT and DHCP Server
  • Speeds of 150Mbps in LTE Networks
  • There is an online software upgrade
  • Keypress MENU, RESET and Power switch
  • You can also charge it via DC 5V, 1A
  • Automatic offload in LTE/3G and Wi-Fi networks

Wireless Local Area Network and Battery life

The HUAWEI E5577Cs-321 can support ten devices at the same time. If you don’t have a WLAN network, then you can use the hotspot device as a router and connect to your laptop or smartphone via a USB Cable. The frequency supported is 2.4GHz wireless technology. The best feature is the automatic offload which can be used as a Wi-Fi repeater in areas experiencing low Wi-Fi signals. The existing Wi-Fi signal will be used as access.

We also noted that the battery can provide an operation time of up to 6 hours, though this time is highly dependent on network availability and strength. If you feel that the battery is worn out, then you have the option of replacing the battery, as opposed to other hotspot devices which usually come with fixed cells.


  • The HUAWEI E5577Cs-321 supports up to ten devices simultaneously
  • You can download the HI Link App to access the web interface
  • Sleek, lightweight and portable design
  • The battery gives you 6 hours of continuous operation time
  • The Wi-Fi offload can act as a wireless repeater
  • It can achieve speeds of up to 150Mbit/s in the downlink


  • The device comes with no APN settings, so you have to either Google it or install the HUAWEI official App
  • Doesn’t charge with all charger


We think the HUAWEI E5577Cs-321 mobile hotspot is a great product, considering the design which fits your pockets and also the network speeds. The price is a little higher for a mobile hotspot device of that size, but you should also consider the connectivity and convenience it brings on the table. In case the 6 hour operation time limits your connectivity, you can purchase a battery back-up to increase overall operation time.

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