Question

Research and discuss 4G, and the features of an iphone or the samsung galaxy mobile phone. In your discussion please list as much features as you can find.

Answer 1

About 4G and LTE:

4G is somewhat vague, but it refers to fourth generation wireless data speeds faster than 3G, which in turn is faster than 2G. Those terms are also somewhat vague, but I think of 1G data as slow dial up, initially 300 bps, eventually upgraded to 600, 1200, 2400, 4800, 9600, on up to maybe 14,400 bps. 2G data was initially in the 14,400 to 56k range and is now typically around 128 Kbps to 256 Kbps. 3G is roughly 1 to 1.5 Mbps and possibly as high as 3 or 4 Mbps. 4G would be anything faster than that, typically 4.7 Mbps on up.

LTE or Long Term Evolution is the 4G wireless data format currently favored by most wireless carriers. It is theoretically capable of 300 Mbps down and 75 Mbps up, although it is usually limited by the carrier well below that. LTE (or now LTE Advanced) is the best commercially available wireless data standard that I am aware of today.

feature of iphone XR:

1.Liquid Retina display:
Apple has included the all-new Liquid Retina LCD as the display on the iPhone XR. It may be an LCD rather than the OLED display found on the XS/XS Max, but it is still a beautiful display.Colors pop, as it supports the P3 wide color gamut, and Apple claims it is the most color accurate LCD on the market.
It is also impressively large for Apple's entry-level iPhone, a whole 6.1 inches in size, larger than the iPhone XS and the largest LCD Apple has ever included on an iPhone. It still comes in a tad shy of the 6.5-inch OLED on the XS Max, but it is still a great sized screen.

2.Single-lens Portrait mode:
Portrait mode photos have taken off, being one of the most used features of the iPhone X and its dual camera system.For the iPhone XR, Apple is only including a single lens assembly, but they are still able to replicate the Portrait mode effect via software and their upgraded Neural Engine.
With just a single camera, the iPhone XR can detect a person's face then separate them from the background, applying a subtle bokeh effect to everything but the subject. It can even be adjusted after the fact with Apple's depth control feature for fine-tuning the amount of blur and bokeh.

3.Symmetrical speaker ports:
Talk about little touches, but the iPhone XR has symmetrical ports on the bottom of the device. Each side of the Lightning port six circles either used for the speaker or the microphone.
On the iPhone XS/XS Max, there are four circles to the left of the Lightning port and seven on the right.

4.Colorful finishes:
In a similar vein to the iPhone 5C, Apple released the iPhone XR with a smattering of color options. Both the glass back and the metal frame are brightly colored for a fun pop.The glass uses an in-depth seven-layer color process to achieve the rich finish and the Apple-exclusive aluminum alloy is anodized to match.
Color options include white, black, blue, yellow, coral, and (PRODUCT)RED.

5.Lightweight aluminum frame: Buyers of the iPhone X, XS, and XS Max will know the hefty stainless steel frame that their phone is built on.For the XR, Apple opted for an aircraft-grade custom aluminum alloy with a matte finish instead. It keeps the phone exceptionally lightweight and durable, while still able to show off those vivid colorful finishes.

6.Exclusive wallpapers:
Each of the new iPhone XR color options come pre-loaded with custom wallpapers that are color matched with their exterior. blue model, for example, features a bright blue wallpaper background. These wallpapers look great and only come with the XR. Good news is that each iPhone XR comes with all color variations of the two primary wallpaper designs for a total of 12 wallpapers no other iPhone ships with.

7.Haptic Touch:

Instead of 3D Touch, the iPhone XR replicates the experience using what Apple calls "Haptic Touch". Instead of having a 3D sensing display, a long press simulates the effect. Whenever you long touch on an applicable element, it will perform a similar 3D Touch action and the phone will provide feedback in form of a slight vibration.

8.Battery life

Of all the iPhones Apple sells, the iPhone XR boasts the most impressive battery performance. Apple says it can achieve up to 25 hours of wireless talk time, 15 hours of internet browsing, and 16 hours of video playback.

Apple iPhone XR hardware

Processor	hexa-core
Processor make	Apple A12 Bionic
Internal storage	64GB
Expandable storage	No

Apple iPhone XR camera

Rear camera	12-megapixel (f/1.8)
Rear autofocus	Yes
Rear flash	Yes
Front camera	7-megapixel (f/2.2)

Apple iPhone XR software

Operating system

iOS 12

Apple iPhone XR connectivity

Wi-Fi	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac
GPS	Yes
Bluetooth	Yes, v 5.00
NFC	Yes
Lightning	Yes
Headphones	Lightning
Number of SIMs	2
Active 4G on both SIM cards	Yes
SIM 1
SIM Type	Nano-SIM
GSM/CDMA	GSM
3G	Yes
4G/ LTE	Yes
Supports 4G in India (Band 40)	Yes
SIM 2
SIM Type	eSIM
GSM/CDMA	GSM
4G/ LTE	Yes
Supports 4G in India (Band 40)	Yes

Apple iPhone XR sensors

Face unlock	Yes
3D face recognition	Yes
Fingerprint sensor	No
Compass/ Magnetometer	Yes
Proximity sensor	Yes
Accelerometer	Yes
Ambient light sensor	Yes
Gyroscope	Yes
Barometer	Ye