Review and Specifications - Obi WorldPhone SF-1


 I just got the new Obi WorldPhone SF-1. Few weeks ago , i made a post about the launching event you can check it out here


The Phone is classy and will definitely compete strongly against Tecno and  Infinix. Here is a short review. I am so in love with this device.


The design is pretty minimalist with only two buttons, the power/unlock button and the volume control rocker (which can also be used as a shutter button when using the camera) on the left. On the right side,you  have the SIM card tray slot that is a hybrid one, which is dual sim. However it is worthy to note that it has a slot for a nano sim which is pretty smller than a micro sim or a micro SD card slot.


Chipset RAM, Storage
Coming down to the stuff that matters to most buyers, the Obi Worldphone SF1 packs in a 1.5 GHz, 64-bit, octa-core Qualcomm MSM8939 Snapdragon 615 chipset. Obi has generously included 3 GB of DDR 3 RAM for the 32 GB model (2 GB for 16 GB) and allows for storage expansion, via the previously mentioned hybrid SIM slot.


The smartphone packs in a 13 MP Autofocus (Sony Exmor IMX214) with an f/2.0 aperture on the back and a 5 MP sensor up front; both of which are accompanied by an LED Flash.
Obi Worldphone SF1 Sample 2Obi Worldphone SF1 Sample 1

The primary camera’s quality was satisfactory at best but it tends to overexpose. Colour reproduction is amazing, but the camera presses for noise-free images, which lead to reduced details while zooming in.Still then, it keeps things simple with all the options easily accessible when needed. The front facing camera does a satisfactory job and the flash really does help in low light situations. Obi has thrown in a few more features like the Dynamic focus (UbiFocus) and colour preserving ChromaFlash, OptiZoom.

Although Obi did focus on the LifeSpeed UI at launch, it seems to be limited to just the launcher and the homescreen. LifeSpeed (with Android 5.0 Lollipop) seems to deliver what can be accomplished by any third-party launcher (available from the Play Store) and as of now comes with few customisation options such as the ability to customise the use of the power button to end a call or answer a call using the home button. Also included are some gesture-based Smart Functions such as flip-to-mute.

Moving to the top we have a 3.5 mm earphone jack and a second microphone along with a plastic insert for the antenna bands. Around the rounded bottom, you will find the mini-USB charging port flanked by two speaker grilles out of which only one is functional, while the other is for aesthetic reasons.


The 3000 mAh battery that the Obi packs is supported by Qualcomm’s Quick Charge 1.0 meaning that the battery does charge up quickly which is very good for the Nigerian Tech Scene.

On the connectivity front, Obi delivers with support for GSM, WCDMA and 4G LTs. You get the dual SIM set up which is basically a hybrid SIM tray so you get a 1 micro SIM + 1 Nano SIM or 1 micro SIM + 1 microSD card set up. And then are the usual WiFi options including Wi-Fi 802.11 a/b/g/n, Dual-Band, Wi-Fi Direct and Bluetooth v4.0 with A2DP. The SF1 also packs in the standard A-GPS with GLONASS.

Coming to the stuff that really matters. Lifespeed that runs atop Android 5.0.2 Lollipop is basically a skin that comes with nothing special apart from the theme functionality, which can also be turned off from the Display Settings.
Obi Worldphone SF1 Screenshot 360
We had a lot of expectations from Lifespeed, but sadly it is nothing more than a third-party launcher that hides some Cyanogen bits underneath (for a variety of reasons). While Obi confirmed that they have not used Cyanogen OS, but a firmware developed in-house, we could not help but notice that the File Manager, Messaging apps come from Cyanogen.
All said and done, the Obi Lifespeed UI style that can be turned off from Display under Settings does provide the device with a distinct look from the lockscreen down to the icons on the homescreen that are instantly recognisable and look unique. Talking about the lockscreen, we wish that it could have been able to display some notifications other than simply giving options to swipe to unlock (shown in the image above), to open the camera or the dialer app.

The audio performance of the Obi Worldphone SF1 is great. Call quality was good with the call volume on the earpiece speaker are loud and the mic is good; as callers on the other end could hear conversations loud and clear. The same can be said about the SF1’s loudspeaker, that is placed under the right side grille at the bottom end of the smartphone, it is sufficiently loud and does a fine job at what it is supposed to do.
The SF1 scored pretty much in line with the rest of competition that sports a Snapdragon 615 chipset. But you also have to remember that the SF1 sports a Full HD (1920 x 1080 pixels) display, which should take a toll on the GPU so you need to keep this in mind before you have a look at the scores.
Obi Worldphone SF1 Benchmarks Screenshot 360 A
The hardware on board the SF1 delivered some commendable scores on benchmarks despite my worries about the software ruining the user experience. The Qualcomm Snapdragon 615 with the Adreno 405 GPU and 3GB of RAM passed off as a great combination and the deal looks even sweeter when you factor in the price tag.

The 13MP rear camera is a Sony Exmor IMX214 Sensor with an f/2.0 aperture that delivers a sufficient amount of detail in daylight and low light captures. Obi has included three extra goodies in its camera software that inlcude, UbiFocus a dynamic focus mode, OptiZoom a multi-frame super-resolution photos that mimics an optical zoom and the colour-preserving Chroma Flash. Clearly, all of these are software tricks and while the OptiZoom and ChromaFlash mode proved their worth in daylight scenarios, the UbiFocus mode did not.
Also not useful in the camera app was the HDR mode (result in the second image above) that made captures far worse by overexposing them, I obtained better results with tap for exposure in the normal auto mode.

Apart from the above mentioned camera modes, you get the standard auto mode that does a great job and is quick to acquire focus and process an image thanks to the great hardware.
Daylight shots are great and the engineers seemed to have managed to squeeze out a good amount of detail from the 13MP sensor. It was a hazy day while the clicking the above images so the details may appear to be a bit washed out.
Low light shooting is the biggest drawback of the SF1’s camera. The images way too noisy and you can notice this even without zooming half way into the image. There is plenty of chroma noise upon closer inspection and this results in low-light images that are almost unusable.
In short, the camera is good only for daylight images, so whatever your shoot in low-light better be close to the camera; close enough for both the front and rear flash to cover. The 5MP unit on the other hand did a great job in normal brightly lit scenarios and yes, the front-facing LED flash does help. Video recording at 1080p was pretty much spot-on and this can be said for both artificial and brightly light conditions.


The phone is placed at about N50,000 on SLOT. However when it launches fully into the market there may be changes in the price.



  • Bands

    GSM: 850/900/1800/1900 MHz
    WCDMA: 850/900/1900/2100 MHz
    4G LTE: FDD B3 1800 MHz & TDD B40 2300 MHz


  • Dimensions

    146*74*8mm (7.8mm body with 0.2mm floating display)
  • Aesthetics

    Unibody with metallic accents and floating glass display
  • Weight



  • Size

    5'' JDI In-Cell IPS
  • Resolution

    Full HD (1080 x 1920 pixels)
  • Pixel Density

    443 ppi
  • Protection

    Corning® Gorilla® Glass 4; Oleophobic Coating; Fully-laminated OGS (One Glass Solution)


  • OS

    Android 5.0.2 Lollipop
  • Chipset

    Qualcomm® MSM8939 Snapdragon™ 615
  • Clock Speed

    1.5 GHz 64-bit Octa-core processor; Adreno™ 405 GPU


  • Internal

    32GB Internal Storage + 3GB RAM /
    16GB Internal Storage + 2GB RAM
    (DDR3 RAM and eMMC 4.5 ROM)
  • External

    Expandable up to 64GB by MicroSD™ card


  • Primary

    13MP AF with LED Flash; Sony Exmor IMX214 Sensor; f/2.0 Aperture
  • Secondary

    5 MP with LED Flash


  • Add-ons

    Dual Mic for Noise Cancellation, Dolby Audio™, Quick Charge 1.0


  • SIM

    Dual SIM (1 Micro + 1 Nano / MicroSD™ card expandable up to 64 GB)
  • WLAN

    Wi-Fi 802.11 a/b/g/n, Dual-Band, Wi-Fi Direct
  • Bluetooth

    v4.0, A2DP
  • GPS

  • USB

    MicroUSB v2.0
  • **This service is not available in all markets.


  • Capacity

    Embedded 3000 mAh Li-Po battery with Quick Charge™ 1.0
  • Standby time

    up to 20 days*
  • Talk time

    up to 28 hours (2G)*
    up to 23 hours (3G)*
  • Video playback time

    up to 10 hours*
  • Music Playback time

    up to 60 hours* (via speakers)
    up to 100 hours* (via headphones)
  • *Values measured in controlled laboratory conditions. Actual time may vary.


  • Sensors

    Accelerometer, Proximity, Magnetic, Gyro, ALS (Ambient Light Sensor)

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I'm a Computer Science Student of The University of Port Harcourt and a Chelsea Fan. I love RnB and A little Trap Music. Tech flows in my veins. I love to have fun with friends and I read a lot. 

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