In order to fulfill the basic functions of our service, the user hereby agrees to allow Xiaomi to collect, process and use personal information which shall include but not be limited to written threads, pictures, comments, replies in the Mi Community, and relevant data types listed in Xiaomi's Private Policy. By selecting "Agree", you agree to Xiaomi's Private Policy and Content Policy .
Agree

Other Devices

[] [EY #16] Not all Bluetooth 5-enabled Smartphones are created Equally: Know More!

2019-10-21 20:57:38
3785 77


Hello Mi Lovers,


Bluetooth, despite being there since day one of modern smartphones, is still evolving. A new iteration of the Bluetooth specification is released every few years, the latest of which is Bluetooth 5, announced in 2016. While the majority of smartphones these days officially support it, a large number of smartphones are missing key functionalities defined in the Bluetooth 5 specification. Bluetooth 5 brings many new improvements and optimizations, but several of them are sadly optional. What this means is that smartphone manufacturers can correctly claim their device supports Bluetooth 5 while missing some of the key improvements in the specification.

New PHYsOne of the important new features that the Bluetooth 5 specification defined is a choice of three PHYs. PHY is an acronym for Physical Layer, which, in essence, is the chipset. At a minimum, chipsets must support LE 1M PHY to support Bluetooth 5. LE 1M PHY is the PHY used in Bluetooth 4 and it has a symbol rate of 1 mega symbol per second (Ms/s). LE 2M PHY, however, doubles this speed at 2 Ms/s. Then there’s LE Coded PHY which provides approximately four times the range of Bluetooth 4 without an increase in power consumption.What’s key about LE 2M and LE Coded is that, for Bluetooth 5, neither of them are mandatory. This means that manufacturers can provide the same communication abilities as Bluetooth 4, but tout Bluetooth 5 support. While most devices support either LE 2M or LE Coded, the vast majority do not support both.


Extended AdvertisingAnother improvement that Bluetooth 5 brings is longer advertising packets. Advertising packets are what your device broadcasts when it attempts to communicate with other devices, essentially advertising itself to other devices. Longer advertising packets mean that your device can send more information about itself and receive more information about other devices. Beacons benefit the most from extended advertisements. A beacon is a small Bluetooth transmitter that companies use for product advertising, among other things. A beacon could be deployed, for example, at an amusement park, and as people walk by their phones would pick up the signal from the beacon and receive information about a certain attraction. The longer the advertising packet, the more information that could be given. In Bluetooth 4, advertising packets were limited to 37 octets of information. In Bluetooth 5, however, packets can be up 255 octets long, a massive improvement.Again, though, extended advertising length is not mandatory in Bluetooth 5. What’s more, extended advertising is not backward compatible, meaning that Bluetooth 4 devices will not even be able to receive packets with the extended lengths. This is bad because it means that the few devices that do support extended advertising lengths will have almost no other devices to utilize it with.

In summary, three of the main features that are available in Bluetooth 5 do not have to be supported for a device to classify as Bluetooth 5-enabled. There are, of course, other features that Bluetooth 5 brings that are mandatory—such as improving interference with other frequencies—but these are more so quality-of-life improvements than game-changing stuff.

Again, though, extended advertising length is not mandatory in Bluetooth 5. What’s more, extended advertising is not backwards compatible, meaning that Bluetooth 4 devices will not even be able to receive packets with the extended lengths. This is bad because it means that the few devices that do support extended advertising lengths will have almost no other devices to utilize it with.


Does Your device support any of these features? There’s a pretty simple way to test if your device supports any of the three features mentioned above. To start, simply download nRF Connect from the Google Play Store.
nRF Connect for Mobile
Developer: Nordic Semiconductor ASA
Price: Free

From there, scroll through all the introduction messages. Next, click “OK” to allow the app to copy files to your device, these are crucial to the app functioning properly. Now, tap the three-bar “hamburger” button on the top left of your screen, then tap “Device information” . You should see a list of features with “YES” or “NO” alongside them. If “High speed (LE 2M) supported” has a yes next to it, your device supports the 2x speed of Bluetooth 5. If “Long range (PHY Coded) supported” has a yes next to it, your device supports the 4x range of Bluetooth 5. If “Extended advertisement supported” has a yes next to it, your device supports the 255 octet advertising of Bluetooth 5.

Currently, a lot of flagships appear to be missing at least one of these features. Xiaomi and OnePlus flagships also support all three features. Famously cheap devices such as the POCO F1 also support everything, so it’s unlikely that price is the source of the problem here.

Bluetooth 5 was a big step forward for device connectivity, so it’s amazing that it’s taken the smartphone community this long to catch on. But now that it’s been made clear just how much we’re missing out on, we can let OEMs know that missing out on such features is unacceptable, and hopefully cement the changes they are already starting to make.


Note: I checked with Mi 8 and Mi 8 SE, Both support all features.
Source: 1, 2



Rate

Number of participants 4 Experience +55 Pack Reason

View Rating Log

2019-10-21 20:57:38
Favorites38 RateRate

Wizard Bunny

BeingBishal | from MI 9 SE

#1

Thanks for information!
2019-10-21 21:41:11

Semi Pro Bunny

alamoajo | from Redmi Note 5

#2

Thanks for information.
2019-10-21 21:52:55

Master Bunny

myrichgoh | from MI 8

#3

Thanks for sharing...
2019-10-21 22:28:17

Master Bunny

sabai-sabai | from Mi A2 Lite

#4

thanks for sharing interesting facts, thoroughly knowledgeable, mate :-)
2019-10-21 23:38:41

Master Bunny

Joshxp | from Redmi Note 5

#5

Thanks for sharingn
2019-10-22 00:26:32

Master Bunny

m.wael.eg | from Redmi Note 5

#6

Thanks For Sharing
2019-10-22 02:16:28
Thanks for the informative thread
2019-10-22 08:06:24

Wizard Bunny

iMKajal | from MI 8

#8

Informative Thread!
2019-10-22 11:29:42

Wizard Bunny

Ian Adoe | from Redmi Note 5A Prime

#9

thanks for the info
2019-10-22 11:50:46
thanks, usefull. :)
2019-10-22 12:37:33
please sign in to reply.
Sign In Sign Up

Muz_paray

Super Moderador

  • Followers

    2776

  • Threads

    133

  • Replies

    1955

  • Points

    144993

Check-in 3 jours
Check-in 7 jours
Mi Explorers
Redmi Note 7
Mi Love U & I
Bunny Winner
Happy Mother's Day
Android Q
50K Mi Fans
Mobile Photography Lover
Challenger
Eid ul-Fitr Mubarak
Brain Teaser
Best Writer
Selfie Day
Happy July
Mi 9T
Global Fans
My Country My Pride
Like
Check in
Reply
Favorites
Profile Medal
MIUI 9th Birthday
Global Community
better together slogan
Global Community
device poll
better together with friends
games discuss
Puzzle Master
Mid-Autumn Festival
200K Mi Fans
300K Mi Fans
2020
close up
Best Photo
Redmi Note 8 Series
Art Challenge
Mother's Day

Read moreGet new
Copyright©2010-2020 Xiaomi.com, All Rights Reserved
Content Policy
Quick Reply To Top Return to the list