In review – UMi X1 [Updated 5 Feb 2013]

Hello to all. Thanks for heading over, I will try my best to cover as many aspects as I can in this review. If I have missed on something which you want to know, please feel free to ask.
Also, it may help to keep in mind my phone history – had an LG Optimus One before this which I used for a year and a half.

UMi X1 – Specifications

Manufacturer’s website:

URLs contained in QR code on box:,,

Price: USD 200-230 (As of Nov 2012) for international buyers; USD 159 for people in China

OS: Android – ICS 4.0.4, default unrooted.


  • Size – 4.5 inch touchscreen IPS, 16:9 widescreen aspect ratio
  • Resolution – 1280×720 pixels, 326 PPI

Battery: 1750mAh

Network support:

  • GSM: 850/900/1800/1900 MHz
  • WCDMA: 900/2100 MHz


Chipset/internal hardware:

  • CPU – MediaTek MT6577 Dual-Core Cortex A9 @1 GHz
  • GPU – PowerVR SGX 531 clocked @394MHz
  • RAM – 1GB, 970MB usable
  • ROM – 4GB (System – 503MB, 2.16GB – internal, 1GB – Apps)

8MP rear with dual LED flash and autofocus, 2MP front

Dimensions and weight: 129x68x8.5mm, 138g with battery

Other features: GPS, A-GPS, Bluetooth, WiFi b/g, microSD support up to 64GB, gravity sensor, accelerometer, light sensor, proximity sensor.

Accessories available (sold separate): Screen protector, plastic case, leather case, spare batteries, UMi Hi-300 earphones, desktop charger (to charge spare batteries)

Ok, so here’s my take.


Comes in a very sleek and beautiful box which you’d never have seen before. I like it a lot. In fact, the box is so sleek that the charger as well as the additional accessories come in separate boxes. The fact that it looks like a book may help some people who’re looking to avoid paying customs. :P


As stock, you get only the phone, data cable and charger, nothing else, not even a user’s manual in Chinese. My seller sent a microSD card reader, a soft pouch I’ll never use, and fake Dr. Dre beats headphones as freebies. I paid extra for – UMi earphones, extra battery, desktop charger, leather case.


In the front there is the 4.5″ screen, three capacitive (there’s a marker under each button which is backlit as opposed to the buttons themselves being backlit) buttons below the screen – back, home and menu respectively. Above the screen there are the sensors – light and proximity, and the 2MP camera. There is the speaker in the center, and ‘UMI X1’ printed. Strangely, it is printed on the screen protector instead of the phone itself.
On top – power/lock button, 3.5mm earphone jack
Left – microUSB port
Right – Volume up/down
Bottom – Microphone

The phone itself feels extremely thin and light. At first, it felt like it was cheap quality. But now after two days it doesn’t feel cheap in any manner, nor does it feel Samsung/LG quality. It took me time to get used to the 8.5mm thickness. I’d been using an LG Optimus One for quite long, and it was much much more thicker.

I compared it to SGS, SGS Advance, SGS 2, SGS 3 in terms of weight and feel. It felt lighter than any of those at first, but when I took both (UMi X1 in one and SGS 1/2/3/advance in the other) it felt heavier than SGS and SGS 2. Please keep in mind there’s no numbers here.

They’ve made the back cover extremely thin, maybe to save on a millimeter of thickness. I advice anyone to be careful when taking that off/putting it back on.

Screen – The screen is an IPS screen, with a superb resolution of 1280×720 pixels. Personally I am not extremely happy with the screen, viewing angles are not as good as my Chinese tablet’s (Aoson M11) screen which uses an IPS panel too. Apart from the viewing angles, the brightness is satisfactory, but I haven’t tested it outdoors yet. The resolution is amazing, pictures look fluid and pixels cannot be detected by the human eye, at least mine. The high PPI of 326 definitely pays off, simple built in wallpapers look gorgeous. Here are a few pictures:

Touch sensitivity – Sensitive enough. 5 points multitouch. Nothing more.

Capacitive buttons – It will take you some time to get used to the back button being on the left, as most popular phones have it on the right. The buttons are very sensitive, as good as my brother’s Samsung Galaxy S advance. I’m happy with the sensitivity. Not happy with the backlight on the buttons, very dim. Here’s a picture:

Sensors, etc – The light and proximity sensor work just fine. I never really set brightness to automatic, most of the time (indoors) it is set to minimum. On this phone, the sensor is too sensitive, brightness levels are changed as soon as there is a change in the amount of ambient light (or maybe the software reacts too quickly?). Not everyone will like this, plus it might drain more juice out of the battery.
As for the proximity sensor: I’ve been using the phone with the leather case, and when I’m on a call I close the leather flap, this turns the screen off. Samsung Galaxy Note style. There are appropriate holes on the leather case for the speaker, rear louspeaker and the rear camera. The USB port cannot be accessed with the case on.

Call quality – The speaker is loud and clear. All fine. No complaints from the receiver.

Micro USB port and charger – I am disappointed with it. Only the stock USB cable fits tight and snugly, and using this one my computer was not able to detect the phone, but the phone could charge itself this way. I tried a few other microUSB cables and they worked fine, but they don’t fit as tight as you’d want them to be.

The charger is rated at – Input: 100-240V–50-60Hz/150mA
Output: 5V–400mA/800mA

It works fine, has an EU plug by default.


Rear camera – This one is a decent performer in daylight. Autofocus is good and pretty fast. I would say it is as good as the 5MP unit on my brother’s SGS Advance. Also, the stock settings are pretty useless for me, pictures come out well with HDR turned on. Strangely with HDR on there are 2 pictures saved in the gallery for every click. But you’ll know which one to delete. Flash is not well directed – by that I mean that flash will wash away the picture, making it pretty much useless most of the time.
Here are some pictures; the first two are with HDR on and the other two with HDR off.

Front camera – I’m quite happy with this. Maybe because I didn’t have much expectations. But this 2MP unit is good enough to make video calls and stuff like that. No self potraits.

This picture is taken using the front camera:


Dual SIM functionality works fine. I tried it with two AirTel SIMs, one on 2G and the other on 3G. I’m planning to get myself another SIM from a carrier who offers good 3G speeds, and is cheap. I found GPRS on this phone to be faster than on my Optimus One, I don’t know if its just me or not.

Here’s how the SIM and microSD ports are arranged:

As I listed above, the phone is completely unlocked for worldwide use.

Bluetooth works fine, tested it with a bluetooth headset, my laptop and paired it to a phone to send and receive files, flawless, as expected. WiFi is fine too, I haven’t used it much so I can’t say. Just used it once with my brother’s phone as the hotspot.

GPS – Here is a screen from the app ‘GPS test’. It took quite some time to lock my position, but I believe there are various fixes to overcome this problem. I will update once I try them out. Google Maps was extremely quick to show my position.

I haven’t tested the WiFi hotspot functionality as yet, but there should be no problems, I guess. Also, there is an option for Bluetooth tethering which I quite like. But I guess it can be used only with PCs, not with phones.


This is one department where this phone just shines. The Android OS is extremely stable, in two days of extensive usage and testing I haven’t been able to notice any lag. The dual core CPU coupled with the PowerVR GPU handles the system well enough for an average user. There are some goodies for the advaneced as well as average user; such as automatic power on/power off, audio profiles, battery percentage, etc. These may not sound much but these come in very handy to me.
Also, it came with Google Play store preinstalled. Works fine out of the box, I didn’t expect that.

It comes with ‘GO Launcher’ as default, but a little tweaked by the factory. The app drawer icon now says ‘UMI’. I personally don’t like GO Launcher much, have replaced it with Nova Launcher.

Here’s how the stock launcher looks:

I suggest anyone interested in this phone to buy a desktop charger seat as well, this way I do not need to plug the phone at all. The desktop charger charges the spare battery, and all I need to do is just swap this with the drained one.
Battery life out of the box was a little less than satisfactory, but then I rooted the phone and tweaked it a little and now it is much much better. Keep in mind this is a huge screen with a 1750mAh battery, so you might want to re-think what your expectations are.

Rooted the phone yesterday.

I’ll do a tutorial on how to root if people want.

One thing I noticed last night when I used the phone for really long non-stop (around 3 hours I think) was that the region around the camera got quite heated up. I’d assume that is where the processor sits.

I do not believe benchmarks much, it is more of user reviews which give a better picture. Anyway, just did an AnTuTu test. If anyone wants me to do more benchmark tests, I’ll oblige.

The phone comes with 4 GB ROM on board. Obviously, all of this is not usable. A a part of it is reserved for the system, a part for internal storage, and the rest for the user.

In this case the partitions looks like:
System – 503 MB
Apps – 1 GB
User – 2.16 GB

Sound and music: The rear speaker is really loud, louder than most phones I’ve seen. But at max volume there is noticeable distortion. I don’t play music on the loudspeaker anyway, it might be a problem for those who do. Solution: keep the volume 2 steps lower than maximum.
One important thing readers might want to make a note of – the IMEI is in 86xxxxxxxx format, luckily it works for me. Some countries need the IMEI in international format (ie 35xxxxxx). Also, as this is a dual SIM, I expected it to have two different IMEI numbers, instead, it comes with two same numbers. But it can be easily changed. It might be considered as a criminal offence in some countries to change the IMEI, and there are tutorials on the net to do the same.


The original UMi earphones are simply amazing. Maybe I had too low expectations, but the sound quality with those earphones on the UMi is at least as good as my iPod. Unfortunately I can’t use this as a music device, as I can’t afford to dry up the battery too soon. But if you’re confused whether to buy the earphones or not, please go ahead.

The leather case is not very useful. In fact, I don’t think it is leather in the first place. :P

And yes, I’d placed an order for the ThL W3 dual core initially, this phone did not seem to be available at all. The seller shipped it with FedEx, and during that time FedEx weren’t shipping any parcels which contained a battery. So I got refunded. The process took 10 days, and the UMi started to appear. So I pre-ordered.

This is it from me. If you have any questions or queries, please feel free to comment. Thanks!

UPDATE – 5th Feb 2013

After updating to the 20130101 ROM (Android 4.1.2 Jelly Bean) the AnTuTu scores have gone up by quite a bit. From 5357 to 5962, which is a good improvement. The ROM is pretty smooth, and recommended to anyone.


4 thoughts on “In review – UMi X1 [Updated 5 Feb 2013]

    • Great work Yash! please share what would be the customs charge to import a Android phone and from which site you bought it.

      • Thanks Omkar! Customs duty depends on your luck. You might be charged anything between 2-20% (sometimes up to 40%) from what I’ve read. I bought all my Chinese electronics from AliExpress, and currently awaiting delivery of a gadget from Your best bet to avoid customs duty is to get your device shipped via Singapore Post. Again, this is based on my reading, all my parcels come via DHL!

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