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[Tech Wednesday] [Tech Wednesday] Bluetooth Vs Wifi Debate: Which One Do You Prefer? Why?

2016-07-12 22:39:53
5056 111

Hello MIUI'ers & Mi Fans,

        I am Sagar_Prasad From Visakhapatnam ( Vizag ). A Die hard Fan of Xiaomi and they products and a Proud News Team Member. Today i have come up with an idea of Creating a Debate Thread on Tech Wednesday. Thanks Moderators for giving me a chance. Coming to the topic Bluetooth Vs Wifi both are wireless Device and are always used for Transferring Different Files. In this thread i will tell about bluetooth and wifi and they differences.


Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz from fixed and mobile devices, and building personal area networks (PANs). Invented by telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.

Bluetooth is a standard wire-replacement communications protocol primarily designed for low-power consumption, with a short range based on low-cost transceiver microchips in each device. Because the devices use a radio (broadcast) communications system, they do not have to be in visual line of sight of each other, however a quasi optical wireless path must be viable. Range is power-class-dependent

Bluetooth Versions

Bluetooth V1.2
* Backward compatible with v1.1, faster connection and discovery.
* Recovered confrontation to radio frequency interference by avoiding the use of crowded frequencies in the hopping sequence.
* Data transmission speed up to 721 kbit / s.

Bluetooth V2.0
* Backward compatible with the previous v1.2.
* Enhanced Data Rate (EDR) for faster data transfer.
* The nominal rate of EDR is about 3 Mbit / s

Bluetooth V2.1
* Backward compatible with v1.2.
* Uses secure simple pairing (SSP) to improve a better pairing experience for Bluetooth devices.
* Uses sniff sub rating, which reduces the power consumption in low-power mode.

Bluetooth V3.0
* Backward compatible with v2.1.
* Bluetooth 3.0 provides theoretical data transfer speeds of up to 24 Mbit / s.
* For high data rate traffic this version uses the adjacent 802.11 link.

Bluetooth V4.0
* Backward compatible with v3.0.
* Provides faster speed in data transmission than the earlier version.
* It comes with greatly reduced power consuming, as if it does not require any power at all to function.
* It provides more security in data transmission than the earlier version.
* Bluetooth technology is developing from day to day and one major feature of any version is just making the newer version superior over the earlier version.

Bluetooth V4.1
* Mobile Wireless Service Coexistence Signaling
* Train Nudging and Generalized Interlaced Scanning
* Low Duty Cycle Directed Advertising
* L2CAP Connection Oriented and Dedicated Channels with Credit Based Flow Control
* Dual Mode and Topology
* LE Link Layer Topology
* 802.11n PAL
* Audio Architecture Updates for Wide Band Speech
* Fast Data Advertising Interval
* Limited Discovery Time

Bluetooth V4.2
* LE Data Packet Length Extension
* LE Secure Connections
* Link Layer Privacy
* Link Layer Extended Scanner Filter Policies
* IP connectivity for Bluetooth Smart devices to become available soon after the introduction of BT v4.2 via the new Internet Protocol Support Profile (IPSP).
* IPSP adds an IPv6 connection option for Bluetooth Smart, to support connected home and other IoT implementations.

Bluetooth V5.0
* Its Fast and will be twice as fast as Bluetooth v4.2
* In theory it can work even from a range of 300 meters.
* Internet of Things is already growing worldwide with more and more connected devices launching. Bluetooth 5.0 is now IoT ready.
* Bluetooth 5.0 will require a hardware upgrade to work to its full capacity.
* The old chips on your devices will work with Bluetooth 5.0 but you won't get many features and that extra bot of performance.

Does Bluetooth Matter?

Bluetooth is used in 8.2 billion devices around the the world from smartphones and laptops to speakers, beacons and cars. So yes, it does matter especially with Internet of Things taking the center-stage in our daily life. Connected devices are the future and wireless technology is hassle free and Bluetooth still is the center of wireless transmission technology between devices. However more updated versions of Bluetooth technology will be keep on coming in future to meet all the requirements of the users.


WiFi is a technology that allows electronic devices to connect to a wireless LAN (WLAN) network, mainly using the 2.4 gigahertz (12 cm) UHF and 5 gigahertz (6 cm) SHF ISM radio bands. A WLAN is usually password protected, but may be open, which allows any device within its range to access the resources of the WLAN network.

Devices which can use Wi-Fi technology include personal computers, video-game consoles, smartphones, digital cameras, tablet computers and digital audio players. Wi-Fi compatible devices can connect to the Internet via a WLAN network and a wireless access point. Such an access point (or hotspot) has a range of about 20 meters (66 feet) indoors and a greater range outdoors. Hotspot coverage can be as small as a single room with walls that block radio waves, or as large as many square kilometres achieved by using multiple overlapping access points.

Wi-Fi is less secure than wired connections, such as Ethernet, precisely because an intruder does not need a physical connection. Web pages that use TLS are secure, but unencrypted Internet access can easily be detected by intruders. Because of this, Wi-Fi has adopted various encryption technologies. The early encryption WEP proved easy to break. Higher quality protocols (WPA, WPA2) were added later. An optional feature added in 2007, called Wi-Fi Protected Setup (WPS), had a serious flaw that allowed an attacker to recover the router's password. The Wi-Fi Alliance has since updated its test plan and certification program to ensure all newly certified devices resist attacks.

Comparision Chart

Device Frequency CostBandwidth Year Of DevelopmentPower Consumption
Bluetooth 2.4Ghz Low Low(800Kbps) 1994 Low
WiFi 2.4,3.6,5 Ghz High High(11Mbps) 1991 High

Device SecurityLatency Bit-Rate
Bluetooth It is Less Secure 200ms 2.1Mbps
WiFi Security issues are already being debated 150ms 600Mbps

"Special Thanks To Our Moderators @vincent_khoo & @fundj112 for giving me a chance to post a Debate Thread on Tech Wednesday. Thank You."

Reference : Bluetooth, Wi-Fi

Which One Do You Prefer & Why???
End Time: 1969-12-31 07:00:00
2016-07-12 22:39:53
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I prefer both :)
WiFi for security and internet where as BT for short range like speakers and headsets.
To bad I can't choose both :)
2016-07-13 02:56:49
MI 9 SE 6GB/128GB Ocean Blue | Pixel 3A XL 4GB/64GB
Due to ready availability.
2016-07-13 03:04:02
There is not one good choise. I'm connect via BT only earphones, becasue my devices used old BT standard, which takes a lot of energy, laptops, phones or other devices used a WiFi with MAC access list, to be more protected.
New BT (5.0) standard maybe change my thinking.. but now.. i prefer WiFI
2016-07-13 03:11:44

Master Bunny

Achi.darlapudi | from mobile


I have another question for you wat would you do with LIFI technology
2016-07-13 03:16:29
Offcourse I prefer wifi which has faster than bluetooth. Maybe if I just send a few small files or single file, I go for bluetooth because it's easy to use. While wifi you have to install an app (luckily we have Mi Drop) that will open a connection between two or more devices and "paired" to each other. And it's a bit complicated.
2016-07-13 03:23:37
for now...i vote for Bluetooth...
2016-07-13 03:31:41
sometimes you gotta run before you can walk
WiFi is my preference.
2016-07-13 03:37:34
2016-07-13 03:37:41
Strange question, are the different functions of the device. I always WI-FI
2016-07-13 03:41:38
2016-07-13 03:49:20
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Sagar Prasad

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