[Oukitel (All phone models)] Alberto96:
Review (part 1)

Introduction

This is the OUKITEL U15s.

Hardware

Being the almost-successor of the OUKITEL U15 Pro, and i say 'almost' because there are some downgrades here, this U15s is powered by a Mediatek MT6750T SOC clocked at 1.5GHz, with a Panasonic 13MP Rear Camera (with no OIS as declared) and a GalaxyCore GC5005 (not OmniVision as declared) 5MP Front Camera. The 5.5" screen is manufactured by SHARP, and i will talk carefully about it in of the next paragraphs because it is a bit messed up.

Unboxing

Packaging comes with basic accessories: 1x Micro-USB Cable, 1x 5V/1A USB Charger, 1x Quick Start Guide, 1x Warranty Certificate, 1x SIM Card Eject Tool, 1x TPU Cover and the Smartphone (of course). A screen protector is already applied.

This is the first MT6750T device ever released by OUKITEL, and just like the U15 Pro it features an Unibody Metal Chassis that feels solid and well-made. I like the painting they used here, it doesn't make the device slippery, providing an extra-grip.

It is 15.10x7.61x0.78cm, with almost-thin bezels. It weights 173g, the lightest 5.5" metal device i have ever tested. It is also the most compact 5.5" device i have ever tested, so well done OUKITEL for this.

On the front side there is the common 2.5D Curved Display and the upper front side of the device features the standard set of things: a Front-Facing Camera, an Earpiece, and the Sensors hole that includes Light, Proximity and Gesture Sensors. The Notification LED is not here, i do not know why OUKITEL removed it, this is a downgrade.

On the lower front side there isn't anything at all because this device uses On-Screen Buttons. On the back side there is the Unibody Metal Chassis, with the lower and upper bands made of Plastic.

The upper rear side of the device features the Camera Sensor supported by a Single-LED Flashlight and the Fingerprint Sensor.

On the lower rear side there are some Logos and Words about the Device's Certifications, together with the OUKITEL logo. The Speaker is positioned on the lower side of the device.

Device

Screen

Well...this is what looks weird on this device. OUKITEL says it is made by Sharp, but at least my device, has a poor-quality screen. Colors are washed out, the brightness is not as high as expected and everything looks cold (low temperature). I hope to see an OTA Update that fixes this issue, if fixable.

Light Sensor supports smooth light changes, this is its maximum brightness. It is not super high as you would expect from an high-quality screen.

Viewing Angles are as good as you would expect from an IPS screen, somehow better than expected. Nothing to complain about this.

Camera

Let's talk about the Camera, this is the second issue of this device. The Rear Camera takes yellowish photos, and Videos are recorded at 15FPS! I have tested another device with the same Panasonic Camera Sensor, so i know how this Sensor works if configured properly. Here it is messed up. OUKITEL, please fix it, this is a great camera sensor if you configure it properly.

"HDR off" on the left and "HDR on" on the right. HDR doesn't seem to have much difference.

Photos taken on medium light conditions are mediocre, with a medium level of noise.

Macro Photos look a bit yellowish, but the focus works great.

Even though there is a Single-LED flashlight, it seems to provide enough light to help the sensor without increasing too much ISO levels.

As regards Video Recording, 1080p videos are garbage, the yellow-tint is here and due to the 15FPS bug, they look like in slow-motion. Also, there is no OIS, unlike what OUKITEL declared.

Front Camera is a GalaxyCore GC5005 (5MP), not an OmniVision as declared by OUKITEL, and luckily the yellowish tint issue is not here, so you will not look weird in a Selfie or Video-Call.

OUKITEL, this is the first time i see a completely messed up Camera Depertment on one of your devices, with wrong declared information and broken software, i hope to not see all of this with the next OTA Update.

Audio

Speaker's Quality could have been better, at maximum volume the sound is still low, and it seems to be a bit muffled, with no low-frequencies as always. No issues with the Earpiece though, perfect while in-call and to play Whatsapp Voice Messages.

As regards the Microphone, it is calibrated for any kind of usage, everyone was able to hear me correctly. There is no Secondary Microphone for Noise Suppression though.

GPS

Unlike other MT6750/MT6750T device i have tested, luckily just like all OUKITEL devices, the GPS is working pretty good. I was able to lock satellites even indoors, so somehow OUKITEL managed to find a way to make the GPS working properly on this SOC.

Indoors on the left, outdoors on the right.

Telephony, Mobile Network & WiFi

OUKITEL, just like some other brands, provides full european bands support, with 4G Band 20 (some other Chinese Smartphones don’t have it). 4G Signal Reception doesn't seem to have any issue, stable and with decent speed.

No issues found with the 3G Signal Reception, actually I never managed to get connected to the 2G Network of my Mobile Operator because there was always some 3G Signal available. (luckily there are no coverage issues here)

WiFi 5GHz is supported here, working great with my 802.11n Dual-Band Connection. It isn't able to get full speed (100/20), but it is still a bit higher than 2.4GHz speed. Connected to 150MBps, this is the only device that managed to get such high speed.

Battery Life

I have measured the real battery capacity using my USB Tester, and it seems that the real battery capacity matches the declared one. (declared 2700mAh, real ~2700mAh).

This is the Geekbench Battery Test, the battery runtime is sufficient, honestly i do not think it is possible to get an higher runtime with a 2700mAh battery.

https://browser.primatelabs.com/battery3/392184

As regards battery charging times, the 5V/1A charger is a bit under-rated to handle a 2700mAh battery, taking more than 2 hours to recharge the device completely.

Software

This is the third issue of this device. OUKITEL choose to use, somehow, a so-called Dido OS (based on Android 6.0). This is a completely customized OS, similar to MIUI, but with lots of UI parts taken from iOS, and some words are badly translated into English. I do not agree at all with this choice, it reduces the Device's Quality and compromises the usage of the device.

Mediatek easy-to-use Gestures are still here, together with the usual Scheduled power on & off menu.

No Gyroscope or Magnetometer/Compass here, i have already asked OUKITEL to add at least the Compass on future devices, let's see if they follow my advice.

The Fingerprint Scanner is great, no issues found while using it. It is accurate, and unlocks the device almost instantly.

[YOUTUBE]2n8SgQMqjTg[/YOUTUBE]​