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Old May 27th, 2012, 05:47 PM   #1 (permalink)
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Default HTC EVO 4G LTE Bluetooth 4.0 operating range

The evo lte has 4.0 Bluetooth and my Motorola elite sliver headset has 3.0.

With my og evo my distance before dropping the signal was thirty feet on a good day as the Bluetooth version was 2.something.

The advantage of a device with 3.0 was suppose to be connectivity up to 300 feet. While I understand that our 4.0 uses less power in the evo lte but I was surprised my range is now same thirty feet....

Can someone explain the lack of range in 4.0?

Thanks.

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Old May 27th, 2012, 08:48 PM   #2 (permalink)
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BT 3 and BT4 are different protocols. Even though the phone is BT4.0, it is backwards compatible with older BT protocols. So to work with a BT3 peripheral, you're actually making a BT3 connection. Power consumption and range should theoretically be the same as before.

To take advantage of BT4, you need a peripheral that is BT4.

So... are we sure that the phone can support BT4? Has anyone had a chance to pair it to a BT4 (Bluetooth Smart) peripheral? Did it work?
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Old May 27th, 2012, 09:01 PM   #3 (permalink)
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It wasn't BT3 that provided range, it's the use of the rarer Class 1 radio as opposed to the commonplace Class 2 radio (32 feet).

Wikipedia is our friend on this one.

Bluetooth - Wikipedia, the free encyclopedia
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Old May 27th, 2012, 09:02 PM   #4 (permalink)
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post up a link to a 4.x BT peripheral.
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Old May 27th, 2012, 10:00 PM   #5 (permalink)
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Quote:
BLUETOOTH® RANGE 3 Class 1

BLUETOOTH® VERSION 3.0

ENHANCED DATA RATE (EDR)

PROFILES AVRCP 1.4, HFP 1.6, A2DP 1.2, Hands Free (HFP)

WIRELESS BLUETOOTH RANGE up to 100 meters/ 333 feet
From the specs on my earpiece.

What I don't get is that 3.0 offers range did we lose that feature in 4.0?
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Old May 28th, 2012, 01:56 AM   #6 (permalink)
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Originally Posted by tropicalsuns View Post
From the specs on my earpiece.

What I don't get is that 3.0 offers range did we lose that feature in 4.0?
I guess I was unclear.

You're not getting range from 3.0 - you're getting it from having a Class 1 radio.

And both devices need Class 1 radios to get that range.

I have Bluetooth 3.0 on my phone now, and I don't think that it has a Class 1 radio.

Most Bluetooth gear has been limited to 32 feet for a long time. The Bluetooth version doesn't control that.

Giz Explains: Everything Bluetooth and Why Bluetooth 3.0 Is Better

Low Power, Long Range Bluetooth 4.0 Is Here | Techi.com
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Old May 28th, 2012, 11:54 PM   #7 (permalink)
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I got this BT4.0 heart rate monitor for my wife (who has the iPhone 4s). Still wondering if the LTEvo can pair with this device. If it supports BT4.0, it should. My plan is to take it to the Sprint store when the phone is finally launched and try to pair it with the demo phone.

iPhone 4S heart rate monitor, iPhone 4S heart rate strap, Bluetooth Smart Heart Rate Strap by Wahoo Fitness, Blue HR

Official bluetooth web site says the following about it:

Quote:
This Bluetooth Smart heart-rate monitor from Wahoo Fitness is designed to connect quickly and easily to the iPhone 4S or any other Bluetooth Smart Ready device, such as a tablet or smartphone.
Problem is: the LTEvo's box shows a BT logo that isn't 4.0 (Smart Ready). And HTC's official desc of the phone says it's 3.x. Meanwhile a bunch of other sites say it's 4.0. I've yet to see definitive proof as to what it is.
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Old May 29th, 2012, 12:06 AM   #8 (permalink)
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Quote:
Originally Posted by novox77 View Post
I got this BT4.0 heart rate monitor for my wife (who has the iPhone 4s). Still wondering if the LTEvo can pair with this device. If it supports BT4.0, it should. My plan is to take it to the Sprint store when the phone is finally launched and try to pair it with the demo phone.

iPhone 4S heart rate monitor, iPhone 4S heart rate strap, Bluetooth Smart Heart Rate Strap by Wahoo Fitness, Blue HR

Official bluetooth web site says the following about it:
Quote:
This Bluetooth Smart heart-rate monitor from Wahoo Fitness is designed to connect quickly and easily to the iPhone 4S or any other Bluetooth Smart Ready device, such as a tablet or smartphone.

Problem is: the LTEvo's box shows a BT logo that isn't 4.0 (Smart Ready). And HTC's official desc of the phone says it's 3.x. Meanwhile a bunch of other sites say it's 4.0. I've yet to see definitive proof as to what it is.
Sprint stores have a sales associate that carries the phone. Call your store up and visit when the designated associate is in. They would probably be willing to let you experiment with Bluetooth. Also the floor demo is probably sitting in back as well, they might be willing to give you a test drive.

Settings -> About -> Hardware Info shows 4.0 under Bluetooth
(So it is for sure 4.0, but as we know there are different specifications)

Still hoping this one works out for you.

Someone will be along with a screenshot I'm sure. Also just noticed there is a service called 'Smart Device Manager' - though it could be for anything.
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Old May 29th, 2012, 03:11 PM   #9 (permalink)
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I bought an LG headset and music cuts in and out. I could see if I was streaming music but it's music on my SD card and it cuts in and out all the time. It ticks me off. On a call it worked fine. Only used it once though so cant be for sure.

I use it for work. So it's a must.

Anyone else have any issues with bluetooth? I'm gonna try and see if it's the phone of the headset later when the woman gets home with her iPhone.
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Old May 29th, 2012, 05:27 PM   #10 (permalink)
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jmac, what LG headset do you have? i've the LG tone BT headset and it works just fine with the 3D and now the LTE...
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Old May 29th, 2012, 06:36 PM   #11 (permalink)
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Originally Posted by marctronixx View Post
jmac, what LG headset do you have? i've the LG tone BT headset and it works just fine with the 3D and now the LTE...
That's the same one I bought. It drives me crazy. Guess I need to take it back for a new one.
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Old June 4th, 2012, 10:14 PM   #12 (permalink)
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Quote:
Originally Posted by novox77 View Post
I got this BT4.0 heart rate monitor for my wife (who has the iPhone 4s). Still wondering if the LTEvo can pair with this device. If it supports BT4.0, it should. My plan is to take it to the Sprint store when the phone is finally launched and try to pair it with the demo phone.

iPhone 4S heart rate monitor, iPhone 4S heart rate strap, Bluetooth Smart Heart Rate Strap by Wahoo Fitness, Blue HR
So, what was the verdict?
You made me curious, also the info might be helpful to the masses.
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Old June 5th, 2012, 08:22 AM   #13 (permalink)
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Quote:
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So, what was the verdict?
You made me curious, also the info might be helpful to the masses.
Thanks for the reminder

The phone detected the presence of the HR monitor, but it refused to pair due to an incorrect pin/password. I believe what's happening is that the Wahoo HR monitor has a pre-programmed pin, and you have to use the Wahoo app in order to pair with it. Once paired once, you can delete the app and use another app of your choice (Runkeeper, Endomondo, etc). Unfortunately, Wahoo only makes the app available for iPhone.

I've heard that the Droid RAZR Maxx works with it too, which means there might be an apk floating around for the wahoo app. Didn't look into it yet. Anyhow, confirmed that Evo LTE is Bluetooth Smart (4.0). My 3vo doesn't detect the HRM at all.
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Old June 5th, 2012, 08:42 AM   #14 (permalink)
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Quote:
Originally Posted by novox77 View Post
Thanks for the reminder

The phone detected the presence of the HR monitor, but it refused to pair due to an incorrect pin/password. I believe what's happening is that the Wahoo HR monitor has a pre-programmed pin, and you have to use the Wahoo app in order to pair with it. Once paired once, you can delete the app and use another app of your choice (Runkeeper, Endomondo, etc). Unfortunately, Wahoo only makes the app available for iPhone.

I've heard that the Droid RAZR Maxx works with it too, which means there might be an apk floating around for the wahoo app. Didn't look into it yet. Anyhow, confirmed that Evo LTE is Bluetooth Smart (4.0). My 3vo doesn't detect the HRM at all.
There's currently no BT4.0 Android HRM on the market then, right?
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Old June 5th, 2012, 09:03 AM   #15 (permalink)
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There's currently no BT4.0 Android HRM on the market then, right?
Polar came out with one a few months ago called the H7.

H7 heart rate sensor - Heart rate sensors - Accessories - Products | Polar USA

It also states explicitly, "Compatible with iPhone 4S". I actually just bought this, and it's on its way to my house via UPS. I should know in a few days if it works for Android.

Basically, iPhone4S was the first phone to support Bluetooth 4, so a lot of these manufacturers marketed toward that phone. Doesn't mean it can't work on an Android with BT4 support, but like I saw with the Wahoo Blue HRM, there may be a software limitation at the moment. I would think the manufacturers will start supporting Android as BT4 becomes more mainstream.

In the case of the Polar H7, I've seen some articles online stating that Android phones can pair with it, and many run-tracking apps pick up the HR. I'll report back once I've tested on LTEvo.
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Old June 5th, 2012, 10:39 AM   #16 (permalink)
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Originally Posted by novox77 View Post
Polar came out with one a few months ago called the H7.

H7 heart rate sensor - Heart rate sensors - Accessories - Products | Polar USA

It also states explicitly, "Compatible with iPhone 4S". I actually just bought this, and it's on its way to my house via UPS. I should know in a few days if it works for Android.

Basically, iPhone4S was the first phone to support Bluetooth 4, so a lot of these manufacturers marketed toward that phone. Doesn't mean it can't work on an Android with BT4 support, but like I saw with the Wahoo Blue HRM, there may be a software limitation at the moment. I would think the manufacturers will start supporting Android as BT4 becomes more mainstream.

In the case of the Polar H7, I've seen some articles online stating that Android phones can pair with it, and many run-tracking apps pick up the HR. I'll report back once I've tested on LTEvo.
When researching this before I read some unfavorable views of the H7. I was thinking at the time the Blue HR sounded like a better unit overall (excluding the glaring Android incompatibility and apparent lack of support for both).

2 interesting articles I came across:
DC Rainmaker: Wahoo Fitness Blue HR: Bluetooth Low Energy/Smart HR Strap - In Depth Review
(if you found a place that has a demo RAZR Maxx or MotoActv watch you could maybe find your Blue HR Sensor ID/PIN? - could be something different, not sure how Bluetooth PINs work + even if you have the ID/PIN you would likely still lack application support, who knows. Just a crazy idea. I'm full of them)

H7 and HTC One X - Polar Forum
(Sounds like possible trouble for the H7 and the One X/HTC in general?)
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Old June 5th, 2012, 11:45 AM   #17 (permalink)
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yeah, i've seen those posts. I ordered from Amazon, and returning stuff is a cinch, so that's the plan. Many One X users (and some LTEvos) are reporting general BT flakiness with headsets, car stereos, etc. as well. I've had none of those issues, which is why I'm taking a chance here.

Regarding the pin/password, the LTEvo doesn't even give me a chance to enter one. When you tap to pair, it just gives you the incorrect pin/password error. While at the same store, I saw two other BT devices in the list. I paired with those, and in each case, the phone prompted me for a pin. So... I think the HRM is designed to handshake in a special way... Don't think I'd have luck messing on the RAZR.
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Old June 5th, 2012, 03:11 PM   #18 (permalink)
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I still have to try this experiment with my other bluetooth headset but my observations:

OG Evo: Accidentally left it sitting on my bed on the 2nd floor of the house and went to the basement to do laundry. The music cut out for a split second twice (which is how I discovered it wasn't on me). That was two floors worth of obstruction.

Evo LTE: Left my phone on the bed with a new pair of headphones on my head. Went to the first floor of the house directly below the bedroom (and above the laundry room) and the music started cutting out constantly.

Not sure if it's the headphones or the phone but I only get about half the distance (one floor) as I did with the OG Evo and my other bluetooth phones (2 floors)
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Old June 5th, 2012, 03:50 PM   #19 (permalink)
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Polar H7 came in early. Sure enough, it didn't work with LTEvo. Got it to pair, but even that was a bit wonky. The BT settings was spinning with "Pairing..." forever, and then I pressed back and went back to the setting, the HRM was showing as already paired.

I started up Runkeeper, and it prompted me with something I'd never seen before, something like: in order to use HR, you must enter your age. I thought to myself this was promising; it must have detected the HRM. But after I entered my age and started an activity, there was no HR.

Tried a bunch of other run tracking apps as well. None of them seem to be able to connect. Looks like we do have a problem with our BT4.0. Must be missing some profiles or something.
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Old June 6th, 2012, 08:09 AM   #20 (permalink)
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I'm starting to see more and more people saying that the root cause is that Android does not support BT4...

Bluetooth Smart (4.0) / GATT support in Android 4.0? - Stack Overflow
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Old June 6th, 2012, 12:08 PM   #21 (permalink)
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I'm starting to see more and more people saying that the root cause is that Android does not support BT4...

Bluetooth Smart (4.0) / GATT support in Android 4.0? - Stack Overflow
I had read something to this effect previously, and I was hoping it was wrong. Shoot.

I have one of those smartwatches from the kickstarter on order and I was hoping to get an HRM for my running. Hopefully this gets sorted out soon, what an oversight.
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Old January 13th, 2013, 02:43 PM   #22 (permalink)
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I had read something to this effect previously, and I was hoping it was wrong. Shoot.

I have one of those smartwatches from the kickstarter on order and I was hoping to get an HRM for my running. Hopefully this gets sorted out soon, what an oversight.
I received two ALPHAs this week. One for my wife and one for myself. I have an HTC Evo 4G LTE and I cannot connect to the ALPHA. My wife's iPhone 4s cannot connect easily. But for my Android, I get the following error, "Couldn't pair with ALPHA because of an incorrect PIN or passkey." Evo can see it but just can't pair with it. I posted on the ALPHA HRM facebook page,

Timeline Photos | Facebook

...they seem to think that's it's the app's or even Android's fault. I think it has more to do with the way the ALPHA connects via BT4.0. It should prompt for the user to enter a PIN. It is pretty clear that the ALPHA is meant to be used with Apple products only. They may not admit to it but that's what I'm starting to realize.

I can also confirm that my phone does support the BT4.0 protocol so that's not the issue.

Please keep me posted if you figure anything out on this issue. Right now, I have an expensive and dimly-lit timepiece that can read my heart rate.

Wish I could get the data to my Evo LTE via bluetooth.
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