S60 Open to new features

Hello Phil!

How about A2DP for the E70? (and other S60 V3 FP0 devices) So we could try that and than answer your question...

S60 V3 FP0 has Blutooth 1.2, that should be enough for A2DP. Nokia is also selling an S60 V3 FP0 device with A2DP and that is the N91 8GB version. So could we please get it and support you! ;-)

Best Regards!
Aron

i have this problem all the time and i can't understand it either. mono bluetooth headsets work no matter what pocket i have my phone in, or even if the phone is in another room. i test a different handset every week and rarely have a problem here.

however no phone has been able to maintain a solid connection to a stereo headset. i try to keep my phone in my back pocket because the headphones i prefer have their bluetooth receiver in the back. however i can't even lean over to stretch with out them cutting out. i don't get it either. i don't use them very often for just this reason. it's torture.

Agreed. I think it's something to do with the extreme amounts of data that have to fly through the air (e.g. 20K per second). Having to keep that sort of rate streaming through a constantly frequency-shifting low power connection can't be easy.....

I always go wired. And my battery lasts longer, too! 8-)

i have found that carrying my xpress music phone in my back pocket, i also have some problems with the signal cutting out, but if i carry the phone in my laptop bag, there's no problem at all. and i can even walk around the apartment with the phone in the other room and it really doesnt cut out. i think the key is to keep the meat out of the line of sight. fabric is something the signal can pass right through, but meat, not so much.

if i dont have my laptop bag with me, i just put my phone in the front pocket of my pants and things are fine. as my beer gut gets bigger, i might run into some troubles though.

Agreed. I think it's something to do with the extreme amounts of data that have to fly through the air (e.g. 20K per second). Having to keep that sort of rate streaming through a constantly frequency-shifting low power connection can't be easy....

I noticed that it cuts out much less when I'm using stereo bluetooth to talk on the phone, I guess there's much less data being sent back and forth - so Steve's theory would make sense.

I SWEAR to you this is the truth: I have never ever had Bluetooth stereo cut out at all, ever. A2DP has always worked for me exactly as advertised, even when I use it for hours at a time.

The only way I can force a cutout is by walking out of the 10 metre Bluetooth range, or if the headphone battery is running low and it cuts out to give me a warning beep.

This makes me even more puzzled. Why does it work 100% fine for me, but work badly for others?

Perhaps movement might be a factor? I always listen while still, for example sitting on a bus or train. Perhaps if I went jogging wearing Bluetooth headphones I would start to notice problems?

Another thing might be apps: I don't usually run apps in the background on phones, I normally kill anything that's running as soon as I notice it. Perhaps interference is partly due to people running multiple apps while listening?

This "no-flesh" theory might also be at least part of the answer. Now that I think about it, I do usually have the phone and headphones on the same side of my body. The most they normally have to go through is fabric.

But how do you explain this: When I was testing the Nokia BH-500 for a review I was able to listen to music with not one but two walls between me and the phone. It cut out for about ten seconds when I went behind the second wall, but then it stabilised and I was able to carry on listening without cutouts. I was standing still when it stabilised, which seems to back up the movement theory.

Okay, I think I've got it! I think I know why some have no problems with Bluetooth stereo while others have continual problems.

I have no problems with Bluetooth stereo, but my music tracks all use lower quality bit rates in order to fit the most tracks on the memory card.

Lower quality tracks presumably send less information per second through the Bluetooth connection, so it's better able to keep up a steady stream. If someone uses higher quality tracks, the extra information per second could be pushing the Bluetooth connection beyond what it can reliably cope with.

It could be that this is a data rate issue, but that the typical data rate used by music stored on phones is right on the edge of what Bluetooth can cope with. Those who use a lower data rate have fewer problems than those who use a higher data rate.

If this is correct, lower bit rate tracks should cause less breakups through Bluetooth than higher bit rate tracks. This would be a kind of solution to the problem, but it would also define the limits of current Bluetooth stereo technology.

I said it was a bandwidth problem. Repeat after me, everyone: "Steve is always right" 8-)

Hello,

It would be nice to see phone model and corresponding firmware numbers to make a systematic conclusion, but I am suspecting the version of bluetooth might have something to do with the problem. You have concluded the transfer speed as the source so can we say that the Bluetooth 1.2 based implementations are more susceptible to this problem than the Bluetooth 2.0 devices?

So who is using N91 8Gb with 1.2 Bluetooth? How about N73 with the latest firmware? N95? etc...

Another thing to consider is buffer size. Is that constant in all BT headphones?

I was a kind of joking up there about getting A2DP for my E70 through Bluetooth 1.2 just to participae in this discussion, but after seeing the A2DP firmware update for the N73 it seems more realistic than before...

Best Regards!
Aron

the problem with bluetooth stereo skipping / lagging is non existent with sony ericsson phones at least w880i and t650i. When i use my 2 a2dp headsets (SE DS-HBH 980 and BH601 with my n95 and n73 i get lagging sound even if i do a full reflash via nsu. I have v20 firmware for n95... this is just not good enough from nokia. N95 is a multimedia device and should be able to let you listen to music wireless as the claim (a2dp function).

At this moment in time I have a 2gb micro sd card in my N95 with around 1gb of music on it in mp3 format. I am experiencing cut outs every couple of seconds continuously. I have not had this problem before even with other apps running in the background. I can only assume that due to the amount of music i'm carrying is causing the blips as normally I have around 20 tracks but now I have around a 100+. Everything else is switched off i.e. bluetooth, 3g etc. Yes I'm even using wired headphones.

Becoming more dissapointed with this device by the day!