Battery
Type
Phone battery can be either removable or non-removable. The main advantage of a non-removable battery is that the overall device tends to be thinner while the removable battery can be easily replaced

Vivo Z3
Non-removable Li-Po 3315 mAh battery

Samsung Galaxy Note 4
Removable Li-Ion 3220 mAh battery
Music Play
For how long can the phone play music continuously before draining the battery if it is used solely to play music

Vivo Z3
N/A

Samsung Galaxy Note 4
Up to 82 h
Stand-By
For how long will the phone battery charge last if the phone is left powered on without doing any activity

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Talk Time
For how long can you continuously talk on the phone, not doing any other activity, before the battery drains

Vivo Z3
N/A

Samsung Galaxy Note 4
Up to 20 h (3G)
Other

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Body
Build
The materials used to build the outer body of the phone including the bezels like glass, stainless steel, plastic, aluminium, etc...

Vivo Z3
N/A

Samsung Galaxy Note 4
Front glass, aluminum frame, plastic back
Dimensions
The length x width x depth (thickness) of the phone in millimetre and inch

Vivo Z3
156 x 75.6 x 8.1 mm (6.14 x 2.98 x 0.32 in)

Samsung Galaxy Note 4
153.5 x 78.6 x 8.5 mm (6.04 x 3.09 x 0.33 in)
Keyboard
The type of the physical keyboard in case the phone has one

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
SIM
How many SIM cards does the phone allow and their sizes (mini, nano, etc...)

Vivo Z3
Dual SIM (Nano-SIM, dual stand-by)

Samsung Galaxy Note 4
Micro-SIM
Weight
The weight of the phone alone, not including other components of the package or the package itself, in gram and ounce

Vivo Z3
164 g (5.78 oz)

Samsung Galaxy Note 4
176 g (6.21 oz)
Other

Vivo Z3
N/A

Samsung Galaxy Note 4
- Stylus
Main Camera
Single
The technical specs of the lens of the primary camera of the phone like the number of pixels or the aperture

Vivo Z3
N/A

Samsung Galaxy Note 4
16 MP, f/2.2, 31mm (standard), 1/2.6", 1.12µm, OIS, AF
Dual
In case the primary camera of the phone has two lenses, the technical specs of the lenses like the number of pixels or the aperture are displayed below

Vivo Z3
16 MP, f/2.0, PDAF
2 MP, f/2.4, depth sensor

Samsung Galaxy Note 4
N/A
Triple
In case the primary camera of the phone has three lenses, the technical specs of the lenses like the number of pixels or the aperture are displayed below

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Features
The features of the primary camera of the phone that gives it a competitive edge over its competitor

Vivo Z3
LED flash, HDR, panorama

Samsung Galaxy Note 4
LED flash, panorama, HDR
Video
Does the primary camera of the phone allow shooting videos? What are the technical specs of the videos shot? Like the quality of the videos at different frames per second (fps) values

Vivo Z3
1080p@30fps

Samsung Galaxy Note 4
2160p@30fps, 1080p@60fps, dual-video rec.
Selfie Camera
Single
The technical specs of the lens of the front camera of the phone like the number of pixels or the aperture

Vivo Z3
12 MP

Samsung Galaxy Note 4
3.7 MP, f/1.9, 22mm (wide)
Dual
In case the front camera of the phone has two lenses, the technical specs of the lenses like the number of pixels or the aperture are displayed below

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Triple
In case the front camera of the phone has three lenses, the technical specs of the lenses like the number of pixels or the aperture are displayed below

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Features
The features of the front camera of the phone that gives it a competitive edge over its competitor

Vivo Z3
HDR

Samsung Galaxy Note 4
HDR
Video
Does the front camera of the phone allow shooting videos? What are the technical specs of the videos shot? Like the quality of the videos at different frames per second (fps) values

Vivo Z3
1080p@30fps

Samsung Galaxy Note 4
1440p@30fps
Other

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Comms
Bluetooth
Does the phone have Bluetooth? Which version and the specs related to it

Vivo Z3
4.2, A2DP, EDR, LE, aptX

Samsung Galaxy Note 4
4.1, A2DP, EDR, LE
GPS
Is the phone GPS enabled? What global satellite-based navigation systems does it support?

Vivo Z3
Yes, with A-GPS, GLONASS, BDS

Samsung Galaxy Note 4
Yes, with A-GPS, GLONASS, BDS
Infrared Port
Does the phone have an Infrared port? If the phone supports Infrared, it can exchange data with other Infrared enabled phones and can be used as a remote control to control other devices like televisions and air conditioners using different apps

Vivo Z3
N/A

Samsung Galaxy Note 4
Yes
NFC
Does the phone support NFC? The main uses of Near-Field Communication in phones include but not limited sharing data like photos and videos with other NFC enabled devices and for quick retail payments in a fashion similar to credit cards

Vivo Z3
N/A

Samsung Galaxy Note 4
Yes
Radio
Does the phone contain an actual radio transmitter? What technologies does the transmitter support like FM, AM, Radio Data System (RDS), etc... Radio enabled devices can broadcast actual radio stations for free (no internet connection required)

Vivo Z3
FM radio

Samsung Galaxy Note 4
N/A
USB
Does the phone have a USB port? What is the version of the USB? Is it proprietary or standard? etc...

Vivo Z3
microUSB 2.0, USB On-The-Go

Samsung Galaxy Note 4
microUSB 2.0 (MHL 3 TV-out), USB Host
WLAN
Does the phone support Wireless Lan? What are the specs and the features of the Wi-Fi?

Vivo Z3
Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot

Samsung Galaxy Note 4
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Display
MultiTouch
Does the phone support multi-touch? Up to how many fingers?

Vivo Z3
Yes

Samsung Galaxy Note 4
Yes
Protection
What are the display protection technologies that the phone supports? Like corning gorilla, oleophobic coating, etc...

Vivo Z3
N/A

Samsung Galaxy Note 4
Corning Gorilla Glass 4
Resolution
What is the resolution of the phone display and its aspect ratio?

Vivo Z3
1080 x 2280 pixels, 19:9 ratio (~400 ppi density)

Samsung Galaxy Note 4
1440 x 2560 pixels, 16:9 ratio (~518 ppi density)
Size
The size of the phone display in cm and inch and the ratio of the display to the body in percent

Vivo Z3
6.3 inches, 99.1 cm2 (~84.0% screen-to-body ratio)

Samsung Galaxy Note 4
5.7 inches, 88.5 cm2 (~73.4% screen-to-body ratio)
Type
Popular display types include In-Plane Switching (IPS), Thin Film Transistor (TFT), and Active-Matrix Organic Light-Emitting Diode (AMOLED). Colors are brighter in AMOLED displays and blacks are darker. IPS screens are cheaper to produce and display natural colors while AMOLED colors tend to be over-saturated. IPS displays the whites better but has poor viewing angles while whites in AMOLED tend to be little bit yellowish but the viewing angles are better. IPS is preferred by photographers for the natural colors while AMOLED is preferred for everyday regular users. IPS improves on the old TFT technology like Super AMOLED improves on AMOLED

Vivo Z3
IPS LCD capacitive touchscreen, 16M colors

Samsung Galaxy Note 4
Super AMOLED capacitive touchscreen, 16M colors
Other

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Features
Alarm
Does the phone have a built-in alarm feature?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Browser
Does the phone have a pre-installed internet browser app? What technologies does it support?

Vivo Z3
HTML5

Samsung Galaxy Note 4
HTML5
Clock
Does the phone have a pre-installed clock app?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Games
Does the phone have pre-installed games? If yes, how many and what are they? Does it support downloading new ones?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Java
Does the phone support Java? What is the version of the Mobile Information Device Profile installed?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Languages
How many languages does the phone support and what are the major ones?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Messaging
What are the messaging technologies pre-configured on the phone?

Vivo Z3
SMS(threaded view), MMS, Email, Push Email, IM

Samsung Galaxy Note 4
SMS(threaded view), MMS, Email, Push Email, IM
Sensors
What are the sensors built into the phone?

Vivo Z3
Infrared face recognition, fingerprint (rear-mounted), accelerometer, proximity, compass

Samsung Galaxy Note 4
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer, gesture, UV, heart rate, SpO2
Other

Vivo Z3
- MP4/H.264 player
- MP3/WAV/eAAC+/FLAC player
- Document viewer
- Photo/video editor

Samsung Galaxy Note 4
- Fast battery charging (Quick Charge 2.0)
- ANT+ support
- S-Voice natural language commands and dictation
- Air gestures
- Dropbox (50 GB cloud storage)
- MP4/DivX/XviD/WMV/H.264 player
- MP3/WAV/eAAC+/AC3/FLAC player
- Photo/video editor
- Document editor
Launch
Announced
When was the phone introduced to the public? What is the release date?

Vivo Z3
2018, October

Samsung Galaxy Note 4
2014, September
Status
What is the status of the phone? Is it available for sale or was it discontinued? When was the phone released?

Vivo Z3
Available. Released 2018, October

Samsung Galaxy Note 4
Available. Released 2014, October
Memory
Call Records
What is the size limit of the call log of the phone or in other words the maximum number of the dialed, answered, and missed calls?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Card Slot
Does the phone accept an external memory card? What is the maximum allowed storage space for the card?

Vivo Z3
microSD, up to 256 GB (dedicated slot)

Samsung Galaxy Note 4
microSD, up to 256 GB (dedicated slot)
Internal
What is the internal storage space of the phone? How much Random Access Memory (RAM) does it have?

Vivo Z3
64/128 GB, 6 GB RAM (SDM710) or 64 GB, 4 GB RAM (SDM670)

Samsung Galaxy Note 4
32 GB, 3 GB RAM
Phonebook
How many contacts can the phone save if any? Does it support photo or video calls?

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Other

Vivo Z3
N/A

Samsung Galaxy Note 4
N/A
Misc
Colors
What are the available colors for the phone?

Vivo Z3
Starry Night, Aurora Blue, Dream Powder

Samsung Galaxy Note 4
Frosted white, Charcoal black, Bronze Gold, Blossom Pink
Price
What is the current price for the phone?

Vivo Z3
About 250 EUR

Samsung Galaxy Note 4
About 350 EUR
SAR
Specific Absorption Rate (SAR) is a measure of the rate at which energy is absorbed by the human body when exposed to a radio frequency electromagnetic field. The SAR limit set by the FCC/IC is 1.6 watts per kg averaged over 1 gram of actual tissue. Above that would be dangerous to human health

Vivo Z3
N/A

Samsung Galaxy Note 4
0.37 W/kg (head) 0.88 W/kg (body)
SAR EU
The SAR limit recommended by the Council of the European Union is 2.0 watts per kilogram averaged over 10 grams of actual tissue. Above that would be dangerous to human health

Vivo Z3
N/A

Samsung Galaxy Note 4
0.37 W/kg (head) 0.38 W/kg (body)
Network
2G Bands
What are the 2G (second-generation) frequency bands supported by the phone? Three primary benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted, 2G systems were significantly more efficient on the spectrum, enabling far greater wireless penetration levels, and 2G introduced data services for mobile like SMS and MMS

Vivo Z3
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | CDMA 800 / 1900 & TD-SCDMA

Samsung Galaxy Note 4
GSM 850 / 900 / 1800 / 1900
3G Bands
What are the 3G (third-generation) frequency bands supported by the phone? 3G was an upgrade for 2G and 2.5G GPRS networks, for faster internet speed. 3G finds application in wireless voice telephony, mobile internet access, fixed wireless internet access, video calls, and mobile TV

Vivo Z3
HSDPA 850 / 900 / 2100

Samsung Galaxy Note 4
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 1700 / 1900 / 2100 - N910W8
4G Bands
4G is the fourth generation of broadband cellular network technology, succeeding 3G. Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television

Vivo Z3
LTE band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

Samsung Galaxy Note 4
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800) - N910F, N910C | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 28(700), 38(2600), 40(2300) - N910G | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700) - N910W8 | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 28(700) - N910U
EDGE
Enhanced Data rates for Global Evolution (EDGE) is a digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM. EDGE is considered a pre-3G radio technology

Vivo Z3
Yes

Samsung Galaxy Note 4
Yes
GPRS
In 2G systems, General Packet Radio Service (GPRS) provides data rates of 56–114 kbit/second. 2G cellular technology combined with GPRS is sometimes described as 2.5G. It provides moderate-speed data transfer and is integrated into GSM Release 97 and newer releases

Vivo Z3
Yes

Samsung Galaxy Note 4
Yes
Speed
What is the maximum network speed, download and upload in mega bits per second (Mbps), allowed by the phone?

Vivo Z3
HSPA, LTE-A

Samsung Galaxy Note 4
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps (Exynos 5433)
HSPA 42.2/5.76 Mbps, LTE-A Cat6 300/50 Mbps (Snapdragon 805)
Technology
What are the network technologies supported by the phone?

Vivo Z3
GSM / CDMA / HSPA / LTE

Samsung Galaxy Note 4
GSM / HSPA / LTE
Platform
Chipset
What is the chip installed on the phone? Popular System On Chip (SoC) brands include Qualcomm and MediaTek

Vivo Z3
Qualcomm SDM670 Snapdragon 670 (10 nm)
Qualcomm SDM710 Snapdragon 710 (10 nm)

Samsung Galaxy Note 4
Qualcomm APQ8084 Snapdragon 805 (28 nm)
Exynos 5433
CPU
What is the Central Processing Unit (CPU) installed on the phone? How many cores and what is the clock rate per core (used as indicator for the processor's speed)?

Vivo Z3
Octa-core (2x2.0 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Octa-core (2x2.2 GHz 360 Gold & 6x2.2 GHz Kryo 360 Silver)

Samsung Galaxy Note 4
Quad-core 2.7 GHz Krait 450 - Snapdragon 805
Octa-core (4x1.3 GHz Cortex-A53 & 4x1.9 GHz Cortex-A57) - Exynos 5433
GPU
What is the Graphics Processing Unit (GPU) installed on the phone? Popular brands include Adreno by Qualcomm and Mali by ARM

Vivo Z3
Adreno 615
Adreno 616

Samsung Galaxy Note 4
Adreno 420 (Snapdragon 805)
Mali-T760 MP6 (Exynos 5433)
OS
What is the Operating System of the phone? The major ones are Android, iOS, and Windows Phone

Vivo Z3
Android 8.1 (Oreo)

Samsung Galaxy Note 4
Android 4.4.4 (KitKat), upgradable to 6.0.1 (Marshmallow)
Sound
3.5mm Jack
Does the phone have a 3.5mm port? This port is standard in the audio industry so having it is a great advantage as it allows for a large number of after market headphones instead of being limited to proprietary products by the phone brand

Vivo Z3
Yes

Samsung Galaxy Note 4
Yes
Alert Types
What kind of hardware notifications are supported by the phone?

Vivo Z3
Vibration; MP3, WAV ringtones

Samsung Galaxy Note 4
Vibration; MP3, WAV ringtones
Loudspeaker
Does the phone have a built-in loudspeaker?

Vivo Z3
Yes

Samsung Galaxy Note 4
Yes
Other

Vivo Z3
- Active noise cancellation with dedicated mic

Samsung Galaxy Note 4
- 24-bit/192kHz audio
- Active noise cancellation with dedicated mic
Tests
Audio Quality
The audio quality of the phone is determined based on the signal-to-noise ratio, the higher the value, the better, and stereo crosstalk which is a measurement of the isolation between the right and the left audio channels. The lower the value, the better in this case as a high value means there is a leakage of signal from one channel to the other and the stereo effect would be decreased. Both values are reported in Decibel (dB) unit

Vivo Z3
N/A

Samsung Galaxy Note 4
Noise -96.6dB / Crosstalk -94.2dB
Battery Life

Vivo Z3
N/A

Samsung Galaxy Note 4
Endurance rating 90h
Display
The most important test for examining the quality of a phone display is the Contrast Ratio which is the difference between the brightest white and the darkest black of the display. A good screen should display the bright colors as bright as possible and the dark colors as dark as possible. For the Contrast Ratio to be tested accurately and fairly, it should be under the sunlight as the sunlight heavily influences the colors so if a display keeps a high Contrast Ratio value while the sunlight is projected on it, that means it's a pretty much good display

Vivo Z3
N/A

Samsung Galaxy Note 4
Contrast ratio: Infinity (nominal), 4.033 (sunlight)
Loudspeaker
The loudspeaker of the phone is tested for the loudness of voice, pink noise, and ringing tones. Pink noise is the background noise you encounter a lot in everyday life like the sound of a fan spinning or a moving train. The values are measured in Decibel (dB) unit and the higher the values, the louder and better the loudspeaker is

Vivo Z3
N/A

Samsung Galaxy Note 4
Voice 79dB / Noise 74dB / Ring 89dB
Performance
What is the Basemark score(s) of the phone? Basemark is the most popular benchmarking tool in the world for the evaluation of the performance of a cell phone. Basemark OS II is the overall performance score of the phone on a systemic level while Basemark X evaluates the gaming and graphics performance of the phone. The higher the value, the better

Vivo Z3
N/A

Samsung Galaxy Note 4
Basemark OS II: 1181 / Basemark OS II 2.0: 1328
Basemark X: 18684