The Colmi i31 is the new upgrade of the Colmi i30 from the Colmi which it’s more capable. This an option for anyone who wants a smartwatch with an AMOLED screen at a cheap price and with the possibility of Making Calls and comes with a set of features that make it unique in its price category and better than other competitors is a new improvement that includes hardware, software, and design. The most prominent feature of which is the 1.43-inch AMOLED Screen, in addition to other basic features such as built-in exclusive watch faces and Health & Fitness Functions, a Voice Assistant, and there are many more. In short, you will get the latest technology that you will not find in any other smartwatch at a low-cost price that does not exceed $35. So let’s start the review.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Colmi i31 Features

  • Making & Answer Calls via Bluetooth
  • 1.43 inch AMOLED Screen, 2 Always On Display
  • 5 Days Battery Life, Magnetic Charging
  • 6 Watch Faces & 4 Menu Style
  • Heart Rate And Blood Pressure Monitor
  • Voice Assistant, Built-in 2 games
  • Multi-Sport Modes
  • IP67 Waterproof
Colmi i31 Smartwatch with 1.43'' AMOLED Display

Design And Build Quality

Colmi i31 clearly share some feature and design with the previous versions of the Colmi i30 with some scattered differences. It runs the same operating system and works with the same combination of a side button and a large display with a speaker and microphones to make calls. I can see it as one of the best budget original smartwatches. So the shape is as usual round with a 1.43-inch screen and 2.5D curved glass in a metal frame with a brushed finish, giving it the look of an expensive watch, and it really is amazing.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

And this is reflected in the build quality which is high and can be seen through the body, which is slim and light. Also, it brings a modern and elegant design that makes you want to wear it as an accessory not to mention its functionalities, despite being a budget smartwatch, the i31 feels sturdy yet comfortable, looks elegant, and gives a premium vibe with 50g, which makes it comfortable on the wrist.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

From underneath is made from Zinc Alloy with the sensor responsible for all the health and sports features on the device and as a new gear upgrade, And as usual, with magnetic charging pins.

As for the colors of the watch, they meet your needs with a variety the same as the straps to complete the overall look of the watch, that’s why it is made of silicone, it’s lightweight and comfortable on your wrist for long-lasting use. And because it’s removable you can use any 20mm belt and is available in colors Black, Green, Blue, and Gold.

Display Screen

On the other hand, Colmi Series has invested heavily in the most important aspect of the smartwatch which is the amazing display quality, I am happy to say that I was completely impressed with its display on the Colmi i31, which is my favorite type, and one of the strengths of this smartwatch, unlike other smartwatches that contain an IPS panel, the i31 its larger and slimmer bezels, enabling you to see more content on the tiny display than ever before, it’s a lovely punchy display with a 1.43-inch AMOLED display, so, the images displayed on the screen are clear thanks to the high resolution of 466*466 pixels and a high pixel density. And with an extremely narrow bezel, the display area is increased by about 10%.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

If you think we’re done, you’re wrong because the screen is perfect and that’s what makes it a pivotal selling point. it will provide you the best experience you can possibly get on budget devices, special thanks to the color accuracy and sharpness, the image is clear and rich, and even under direct sunlight, you’ll be able to use your smartwatch with ease whether you want to read notification or check your health stats, you won’t need to get your phone out of your pocket. The screen also provides 2 dials of an always-on display feature, I personally prefer this screen over others and would love to see it used more.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Multi Watch Faces

Colmi has made a concerted effort to tailor the plethora of watch faces included on the Colmi i31 that’s why brings you 6 different pre-installed watch faces to choose from, you can switch between them easily in many ways, by long pressing the home screen or via the FitCloudPro app for more watch faces with over 200 online watch faces are available for download and it’s included a variety of colors, retro, analog, 3D, and digital faces, or you can even use your own photos as a watch face background or any wallpaper and have the possibility of customization. So yes, you will not miss the fun.

Colmi i31 Smartwatch with 1.43'' AMOLED Display


Colmi i31 Smartwatch has IP67 Waterproof which it means can only handle sweat and splashes of water, although the watch is not approved for swimming but is good for wearing for activities, so, I do not recommend swimming or exposing it to hot water or saltwater to avoid any harm Long or short term and with the presence of a speaker and a microphone, avoiding it will be good, however, if it’s exposed to water in any way, I prefer to dry the watch after immersing it in water and before operating it so that it stays with you for as long as possible.

Under The Hood

While everything looks the same to the naked eye, the Colmi i31 has some significant changes under the hood. It adopts the built-in Realtek RTL8763E chip for faster response speed and faster data processing, and it’s powered by a 64MB ROM of storage for storing contacts, watch faces, notifications, and more. For your health, this device has a Heart Rate Sensor, it’s one of the best in this market and is known for giving good results and will help you take better care of your health and encourage you to work out more.

For connectivity, this watch has the latest Bluetooth v5.0 chip and supports calls So, You will not face any problems in contact because it’s the fastest and most stable. And this version is compatible with Android 5.0 and later or iOS 10.0 and above so the connection is through the FitCloudPro app. However, it does not have its own GPS sensor, which means that you will always have to use it with a smartphone to get your location.

AI Voice Assistant

Al voice assistant algorithm in Colmi i31 allows you to give voice commands in order to perform some specific task or to ask your queries. Moreover, the smartwatch comes with an integrated speaker which helps you interact with your AI assistant in two-way voice communication, which is convenient and quick.

How Do You Operate Colmi i31

The Software makes for a generally pleasant and rich experience overall, it works well enough for you to navigate around and use the various apps and functions. and one of the most important updates is to change the look of menus, icons, and software in general. And most navigation is done via the touchscreen, which you swipe left, right, up, and down to get to the main parts of the software. First, once inside swipe down from the top the access a Control Center that allows you to control brightness and Battery save mode, enable Bluetooth Phone, Settings, Do not disturb, and more.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Regarding swiping from the right, you will find shortcuts for Steps, Phone, Music, Heart rate monitoring, and Weather, and you can add other components.

The main menu can be accessed by swiping from the left, you will find heart rate and sleep monitoring, sports modes, settings, and other features that include capturing photos from the watch and music, weather, games, voice assistant, menu styles, phone, and more. And it’s good that it also includes simple games. Also comes in 4 styles to choose from, we find Striped six-square grid, grid style, and more, each one allows you to navigate the menu in a different fashion but all of them seem to work just fine. You can change the menu style from Control Center.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Health & Fitness Functions

The Colmi i31 is competitive in all aspects that a smartwatch mainly needs. Taking a look at the sports activities, it is clear that the company wanted to provide everything necessary to facilitate the end user.

With many types of exercise, the i31 is prepared for practically any type of exercise, from walking to cycling, through all winter sports, and those involving the use of the ball. By using the app, it is possible to explore the different options, finding in fact countless different activities. But the main factors, after all, are always the same and are suggested as follows: Outdoor Running, Cycling, Jumping Jack, Skipping, Badminton, Table Tennis, Tennis, Alpinism, Walking, Basketball, Football, Baseball, Cricket, Volleyball, Hockey, Rugby, Dancing, Yoga, Spinning Bike, Sit-ups, Indoor Running, Boating, Gymnastics, Swimming.

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Apart from the sports features, to measure your ring progress throughout the day, the Colmi i31 records a vast array of health metrics. It tracks your steps, distance, resting, active energy, and 24/7 heart rate to check whether it’s beating normally. There’s also a SpO2 sensor for manual and blood-oxygen level tracking in the blood in real-time to improve the ability of the cardiovascular system to prevent the low level of oxygen in the blood that causes discomfort to a person’s body and sleep tracking to measure the quality of your slumber at night and wake time to provide you with an analysis of your sleep patterns.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Although it has a sensor that is more accurate than other sensors, this does not mean that the measurements provided by this smartwatch are completely accurate, as most of them are largely unreliable because it’s not a medical instrument, but it makes you very aware of your health and physical performance. unfortunately, this is often the case with watches in this price range.

How To Pair The Colmi i31

For you to enjoy the many benefits of your Colmi i31 Smartwatch, you would have to connect it to a support app. The recommended app is the FitCloudPro app which has loads of beneficial features to keep you fit and healthy, and it’s compatible with Android and iOS, so you would need to download it on your mobile phone. It is available on Google Play and App Store for both Android and iOS users.

After downloading and installing the FitCloudPro app and setup, launch the application and set permissions. Next, add your Smartwatch device and connect it to the app, it’s easy to connect the i31 to your phone, all you have to do:

  • Step 1: The first thing to do is to go to your phone’s settings. Then, turn on your phone’s Bluetooth connection, and add the device. Two options add a device, search, or scan a QR code.
  • Step 2: Next, you would need to Sign up for a FitCloudPro account. Or, Log in to your existing account (if you already have an account).
  • Step 3: Allow all notification data. A notification interface will pop up requesting your permission to allow the app access to certain functions on your mobile phone. (Denying any of these permission requests might prevent FitCloudPro from working properly).

When all this is done, it will communicate directly and without any complications, with automatic setting of time and language, weather, in addition to a phone call feature, and update the smartwatch software if available. Lastly, set your Personalization Options and settings

FitCloudPro App For Colmi i31

The Colmi i31 smartwatch works in concert with the FitCloudPro app which expands the things you can do with the smartwatch by adding a lot of features, first, the app has a health menu where it displays all the data collected by the smartwatch such as the steps walked today, your daily goal, the number of calories burnt and the distance traveled, you can click on the label to expand it to show you more information on broader time frames such as the weekly and the monthly, right underneath we find the sleep monitoring label, we click on it to expand and it will show us light and deep sleep information, total sleep and awake time and the collected data from a week or a month, all displayed in a nice graph. It also has the heart rate and blood pressure, each one has its very own label to click and expand then you can either start measuring or check the previously collected data.

Bluetooth Calling Function On Colmi i31

Unlike other smartwatches that only notify you when a call arrives, One of the most attention-grabbing highlights of the Colmi i31 is the ability you can answer your smartphone calls directly from the smartwatch. Just sync them via Bluetooth 5.0 and, as soon as you receive a call, click on the button that will appear on your watch’s screen to answer it.
it’s equipped with an integrated microphone and a speaker, with the former serving up surprisingly clear sound that can be heard over general din (such as road noise), making it usable, As for the microphone, it’s mainly used for on-wrist calls or, if you’re paired to a smartphone. So it not only displays an incoming call but can also receive and dial calls made via Bluetooth directly from the watch with good sound from the speakers and a mic, and of course, this is done with your smartphone, So you don’t have to take out the phone of your pocket every time you want to make or answer a simple call.

This smartwatch lets you save important and frequently-called contacts so that you don’t have to dig through an extensive contact list to make a call, especially when you’re pressed for time. also features a dial pad that enables you to make calls quickly and conveniently.

To enable Bluetooth Calling Function on this smartwatch, you need first to connect it to the compatible app. Once connected, you need to manually go to the phone’s Bluetooth settings and pair this smartwatch (Bluetooth Name: i31_Phone). Upon pairing, you will get a notification: Connected for calls and audio.

Notifications & Messages

Notifications are clearly visible and easily readable. And you will not miss out on important messages or notifications with Colmi i31 on your wrist. It syncs up with your smartphone to display incoming calls, messages, social media notifications (Facebook, WhatsApp, Twitter), and other applications, enabling you to stay connected even when you’re on the move.

Battery Life & Charging Time

Finally, The battery in smartwatches is no less important than the rest of the functions, And this is what it offers Colmi i31 with a capacity of 250mAh which is considered one of the largest in this range, battery life is excellent, at least by budget smartwatches standards. for up to 5 days in typical use to 3 days in heavy usage. It all depends on how many features you use, and it must be charged with a magnetic charger.

Final verdict

As I have said before, this smartwatch could possibly be the best deal while keeping the budget as low as possible, especially the software you get that expands its usability of it by a lot, the seamless connection with your device thanks to the Bluetooth 5.0 that supports calls, and the optimized CPU chip that allows for great performance and huge battery life, not to mention all the health and sports tracking features that helped people be warier of their health and encouraged them to practice sports and be fitter.

For the time being, there is nothing better than the Colmi i31 to give you the experience of an AMOLED screen at this price, even the rest of the features were more than satisfactory, and this includes the overall performance and smooth navigation of the system as well as the battery which was good.

Colmi i31 Smartwatch with 1.43'' AMOLED Display

Colmi i31 Price And Where To Buy

The Colmi i31 Smartwatch is currently available on the AliExpress Store for a very good price So, don’t miss out on this great deal. And to view its price or buy it, you can access the offer by clicking on the store icon.

What’s in the Box?

  • i31 Smartwatch
  • Silicon Strap
  • Magnetic charger
  • User Manual

Colmi i31 Specifications

ColorEnglish, Spanish, Portuguese, German, Italy, French, Russian, Japanese, Polish, Vietnamese, Arabic, Hebrew, Thai, Croatian, Turkish, Malaysian, Finnish, Greek, Romanian, Chinese
Chip Realtek RTL8763E
MemoryEnglish, Spanish, Portuguese, German, Italy, French, Russian, Japanese, Polish, Vietnamese, Arabic, Hebrew, Thai, Croatian, Turkish, Malaysian, Finnish, Greek, Romanian, Chinese
Bluetooth VersionBT V5.0 support calls
Compatible OSAndroid 5.0, iOS 10.0 or above
Operating ModeFull Touch + Side Button
APP NameFitCloudPro
App LanguageSimplified Chinese, Traditional Chinese, English, Italian, Portuguese, Korean, Japanese, German, Spanish, French, Arabic, Hindi, Polish, Russian, Dutch, Turkish, Indonesian, and Czech.
Watch LanguageEnglish, Russian, Spanish, Portuguese, French, Japanese, Arabic, Dutch, Italian, Czech, Egyptian, Indonesian, Polish, Vietnamese, Ukrainian, German, and Chinese.
Sport ModesSupport
SensorG-sensor 3-axis, Heart Rate Sensor
ScreenSize: 1.43 inches
Display Type: AMOLED screen 2.5D Curved 
Resolution: 466×466 pixels
BatteryBattery Capacity: 250mAh
Standby Time: Up to 20 days
Using time: About 4-6 days
Charging Time: About 2 hours
Charging Type: Magnetic charging
Case and BandThe shape of the dial: Square Shaped
Band Size: 20mm  ( Removable watch strap)
Band Material: Silicone
Case Material: Zinc alloy
Weight: about 40g
Size: 44.5 x 44.5 x 10.4 mm
Other FeaturesActivity Record, Step Counter, Standing, Move Bar (Displays on device after a period of inactivity; Walk for a couple of minutes to reset it), Auto Goal (Learns your activity level and assigns a daily step goal), Calories Burned, Real-time Pace & Distance.
Smart Notifications(Call, Text, Gmail, and Smartphone App Notifications), Weather Sync(Check the weather in the next four days), Controls Smartphone Music and Camera, Raise to Wake, Find My Phone and Watch, Do Not Disturb Modes, Sedentary alert.