Develop Bugs

Simultaneous call and data

Just started using my Desire last night! Feeling good.
However...
Was just on a call, tried to use the Android Marketplace. Couldn't.
Got curious, and tried to use Google Maps mid call. Couldn't.
Tried to use the internet during the call. Couldn't.
Now, I'm on T-Mobile (UK) and have just come from a Nokia E71. With my E71 I could make a call and use Google Maps.
Am I missing something or is this bit of multitasking somehow not possible???
Please tell me I'm missing something!

Cleargrey said:
Just started using my Desire last night! Feeling good.
However...
Was just on a call, tried to use the Android Marketplace. Couldn't.
Got curious, and tried to use Google Maps mid call. Couldn't.
Tried to use the internet during the call. Couldn't.
Now, I'm on T-Mobile (UK) and have just come from a Nokia E71. With my E71 I could make a call and use Google Maps.
Am I missing something or is this bit of multitasking somehow not possible???
Please tell me I'm missing something!
Click to expand...
Click to collapse
A lot of carriers don't currently support simultaneous data and voice. For example, I have Sprint and it has no support for this - very annoying.
AT&T is the only one I'm personally aware that supports both talking and using data at the same time.
If it doesn't work for you, you're out of luck with your carrier.

Archon810 said:
A lot of carriers don't currently support simultaneous data and voice. For example, I have Sprint and it has no support for this - very annoying.
AT&T is the only one I'm personally aware that supports both talking and using data at the same time.
If it doesn't work for you, you're out of luck with your carrier.
Click to expand...
Click to collapse
Sprint is a CDMA network, and most CDMA networks don't currently support simultaneous voice and data.
Most GSM networks do support this when you have a 3G connection. The voice call is routed over 2G and the data over 3G. If your data connection drops down to GPRS or EDGE, you will lose data connectivity because most networks do not support simultaneous voice and data over 2G, though I'm told that they can be set up to do so, so I guess it's more down to bandwidth.
Regards,
Dave

I know that Sprint's CDMA has an issue with simultaneous data and voice. Which suck. And I know they are making good attempts to sort this out for the EVO, which is good.
But again, I've been doing this fine on my E71. The only thing I can think of, in relation to Dave's comments, is that for some reason, because the Desire can suck up more data, T-mobile have restricted it. Which would suprise me because, as Dave said, simultaneous voice and data is a feature of most GSM networks and has been for a while.

I have just tested that and it's true - the phone doesn't have simultaneous data and voice connection
Now normally I don't need that because if I talk, I talk and not browse the web, but even my freaking G1 could do both things at the same time. What the heck? It must be something HTC did.
One more reason to eagerly wait for root...

I don't see how this is a big deal. Why would you need to make a call AND browse the market place or look at maps etc? Surely it's something that can be done after the call even if it is receiving directions or whatever.

ephumuris said:
I don't see how this is a big deal. Why would you need to make a call AND browse the market place or look at maps etc? Surely it's something that can be done after the call even if it is receiving directions or whatever.
Click to expand...
Click to collapse
It's a big deal because:
1. HTC (or T-Mobile) has obviously done something to disable it because Android with GSM should have such functionality;
2. Older Android phones and even some "dumbphones" have that functionality
3. No point in browsing market while talking, but what about looking up maps while talking? - That was even one of G1's selling points.

I have often been on a call and used the internet or searched Maps. So it's something that I am quite used to doing.
Though I thought I'd get an answer straight from the horses mouth and have emailed HTC support just now. I'm hoping they give me good news...

False alarm. This only happens on GPRS, which is normal. Simultaneous data and voice connection can only happen on 3G as explained in Android Forums.

and of course correctly explained by Dave in post #3 here.

rhedgehog said:
and of course correctly explained by Dave in post #3 here.
Click to expand...
Click to collapse
Missed that. Sorry

ephumuris said:
I don't see how this is a big deal. Why would you need to make a call AND browse the market place or look at maps etc? Surely it's something that can be done after the call even if it is receiving directions or whatever.
Click to expand...
Click to collapse
Kind of tired of explaining this one but here are the 2 use cases:
- you're talking with someone on the phone and they ask you for directions, look something up on the internet, see if you received their email, etc, etc
- and even more importantly, when my rooted phone acts as a WiFi access point with android-wifi-tether and someone calls me, my freaking Inet disappears until I'm off the phone. This is the more annoying of the 2 use cases.

Well, this was their reply:
"If you start the call being connected through 2G, then yes the internet will then work. But as soon as the signal goes over to 3G then the internet connection and usuage will be turned off.
When it comes to wifi, if you are in a call and you are connected to wifi, then you should be able to surf.
Hope this answers your questions.
Thank you for contacting HTC. "
I did get concerned for a second. I've just tried the wifi and call which worked. And I just tried a call again, with wifi turned off and it worked, even though it didn't work before.
I just hope it routes voice and data in a way that doesn't trip me up in the future. I.e. voice over 2G if I'm trying to access data.
So yes, false alarm.
And funnily enough I just now got a call from Carphonewarehouse asking me if I'm having a problem sending texts as some Desires do indeed have a software fault where they have no Service Centre number for messages. For once, I've skipped the faulty units!
Cheers guys. Sorry scare anyone.

lol.
Whoever it was at HTC got their 2G and 3G mixed up.
what they meant to say was if it goes down to 2G then it'll stop.
You'll be ok in general, as long as you have 3G signal wherever you are. If you've only got 2G, you'll have to hang up, find out and then call back!
the SMSC shouldn't be a problem though, just program it in manually. Not worth sending a phone back for unless it fails then as well.

Even if I'm on 3G/HSPA, when I call someone, as soon as the call is connected, my data connection disappears (only shows bars, no G, 3G, or H) and I can't browse the web or use maps while in-call :-/

ok, well that's not right. The bars should only disappear if you turn the mobile data off. it should not get turned off by a call. Even if i try it when in G, the bars stay showing, just no data comes till i hang up the call.
If the bars are disappearing, something else is going on.
It could be a local network issue. maybe it's an old transmitter that missed an update or something...?could possibly be a full tower.
I know that a few years ago, the towers would kick off data connections to allow more airtime for voice calls which have priority, but i don't know if that's still relevant on 3G.

This was a hot discussion back when the Hero came out as well.
In the end I think it comes down to the network of your carrier. Some people report they can internet and call at the same time. Others say when they are internetting on their phone, a call is directly forwarded to their voicemail etc.
I'm afraid it's a combination between how your carrier configures their network and on what connection you are on (3g, 2g etc).

Yeah it's false alarm no #2 -- must be a spotty 3G at my house. I went to the city centre and tried it there -- worked like a charm.
Though it's a bit weird as 3G speed is not bad at all at my house, but when I call, data connection goes off :-/

Maybe at the city center you got more cells in range than in your house. Means your carrier got more available bandwith

I think reception gets spotty. Sometimes voice and data works, sometimes it doesn't. At home in my bedroom I can get H connection, 20 meters away I can't.
I think the important thing is that the phone is capable. The rest is just pinning down exactly the situation that we want to avoid.

Can you text over wifi instead of sprint network????

Sometimes at home can't get damn 3g signal. So I got wifi how do I send messages using wifi???? ****'s very annoying.

Text is a voice service it doesn't use data at all. If you can't text making/receiving phone calls must be hard at your home as well. Over wifi Google voice or a similar app from the play store would be your best bet

Yes, you can. The best way to do it would be Google Voice, but there are other apps out there capable of it. The way the carriers handle it (in this case Sprint) is over the network... GSM or CDMA. 3g is always an extension of the mobile voice network... this is why you typically cannot make calls and browse the web while on 3g (although Sprint has found a way to defeat this with the Viper and the Evo LTE, though a second chipset). 4g runs on a different band than 3g does, which means it doesn't affect your calling / text capabilities.
I know that is more info than you asked for. The long and short of it is that you need an app designed to run on Wifi, rather than mobile data, but it is possible.

+1 for google voice. I even use it to text from my Nook which doesn't even have 3g.
Sent from my SPH-D700 using XDA

I put mine in airplane mode when I'm home and used voice for everything
Sent from my SPH-D710 using xda premium

G voice.. or complain to sprint and get a airave and hook it up to your wireless router and have signal in your house .. or get roam control (assuming your rooted) and roam when your home and use your wifi for your data needs and sure youll be fine since wont need to worry about sprint and data roaming
Sent from my SPH-D710 using XDA

elliwigy said:
G voice.. or complain to sprint and get a airave and hook it up to your wireless router and have signal in your house .. or get roam control (assuming your rooted) and roam when your home and use your wifi for your data needs and sure youll be fine since wont need to worry about sprint and data roaming
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
I have to use roam control and wifi at my house. I spend most my time in my game room in the basement and.my sprint service sucks down there. But I get perfect signal roaming.

You guys reading?
If you can make a call at home you can text brother
Sent from my awesomely EPIC Phone

Rooster85 said:
You guys reading?
If you can make a call at home you can text brother
Click to expand...
Click to collapse
Uh, slvrap1 already stated this in so many words above. We're discussing workarounds now. And yes, Google Voice is the easiest way to go if you're using an Android phone.

A lot of the information in this thread is wrong...
SMS is actually a function over 1xRTT (just like voice calls) not EVDO (3g)... This is why you can recieve sms messages while on a phone call but not get other data services at the same time...
You never make a phone call or transmit SMS messages over EVDO, it is a data only connection protocol..
This is why SMS are limited to a certain number of characters, because they are actually a hack of the control channel in 1xRTT communications...
Simplified version:
REAL SMS is a hack of the control channel between cell phone and tower. It has nothing to do with a data connection so it can not be transmitted via EVDO, WIFI or any other data connection...
Note: When I state REAL SMS that is because services like google voice and others are all VOIP connections that use data connections to transmit messages and phone conversations... There is character limit in VOIP texting but they impose it because you can send it to a REAL SMS and that has character limitations built in..

numus said:
A lot of the information in this thread is wrong...
SMS is actually a function over 1xRTT (just like voice calls) not EVDO (3g)... This is why you can recieve sms messages while on a phone call but not get other data services at the same time...
You never make a phone call or transmit SMS messages over EVDO, it is a data only connection protocol..
This is why SMS are limited to a certain number of characters, because they are actually a hack of the control channel in 1xRTT communications...
Click to expand...
Click to collapse
Correct. Texting has nothing to do with 3g. You can find an app that can use 3g or wifi to text o stead of the network. This is what my friend uses on AT&T so they don't have to pay for text messages. They use the network.
Sent from my SPH-D710 using xda premium

musclehead84 said:
Correct. Texting has nothing to do with 3g. You can find an app that can use 3g or wifi to text o stead of the network. This is what my friend uses on AT&T so they don't have to pay for text messages. They use the network.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
That actually just sends the message via the data connection to a server, which then relays that into the carrier's system and is then transmitted to the recievers phone via the 1xRTT control channel... They aren't actually texting a phone, they are sending an instant message to a server that then knows how to convert and relay that into a text message.
Note: I use 1xRTT because we are on a CDMA2000 system... for AT&T, T-Mobile and other GSM it works on their *2g* voice connection... I forgot what it is called at this moment...

Use roam control at home, Verizon probably covers you better. 1x roaming is free other than your minutes

deziking said:
Sometimes at home can't get damn 3g signal. So I got wifi how do I send messages using wifi???? ****'s very annoying.
Click to expand...
Click to collapse
Well let me say this. I was at a music festival in March. Had some signal bars but could not make calls or texts. Incoming or outgoing.
When I was in a certain stage I tried again (text) they all failed. I tried to turn on wifi and found an open network! Tried to text. Success!
So in my experience I say yes! Anywhere else I could not text. So when I needed to text I would return to that stage and connect to wifi.
Sent from my SPH-D710 using Tapatalk 2

numus said:
A lot of the information in this thread is wrong...
SMS is actually a function over 1xRTT (just like voice calls) not EVDO (3g)... This is why you can recieve sms messages while on a phone call but not get other data services at the same time...
Click to expand...
Click to collapse
I can text and surf web/Tapatalk while in phone call?!!
Sent from my SPH-D710 using Tapatalk 2

tt281gt said:
I can text and surf web/Tapatalk while in phone call?!!
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
Do you happen to be connected to wifi?
Sent from my SPH-D710 using Tapatalk 2

tt281gt said:
Well let me say this. I was at a music festival in March. Had some signal bars but could not make calls or texts. Incoming or outgoing.
When I was in a certain stage I tried again (text) they all failed. I tried to turn on wifi and found an open network! Tried to text. Success!
So in my experience I say yes! Anywhere else I could not text. So when I needed to text I would return to that stage and connect to wifi.
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
More likely when you moved you connected to a less loaded tower, being connected to wifi was just a coincidence.

tt281gt said:
I can text and surf web/Tapatalk while in phone call?!!
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
Well if you are connected to WiMAX or Wifi.. yes you can make a phone call and surf the web at the same time.. If you are on EVDO, the only way that is possible is if you have 2 cell phones... One to surf the web and one to make calls
tt281gt said:
Well let me say this. I was at a music festival in March. Had some signal bars but could not make calls or texts. Incoming or outgoing.
When I was in a certain stage I tried again (text) they all failed. I tried to turn on wifi and found an open network! Tried to text. Success!
So in my experience I say yes! Anywhere else I could not text. So when I needed to text I would return to that stage and connect to wifi.
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
Your experience is only coincidental... It is physically impossible because the SMS system is built on the 1xRTT control channel... It has nothing to do with the data connection in any way shape or form... It is a hack on the tower identification and protocol transmission channel.
It is like if you take out a frozen piece of meat, turn on the microwave and leave the piece of meat outside the microwave (never put it in the microwave) and claim the microwave is defrosting the meat...

Rooster85 said:
You guys reading?
If you can make a call at home you can text brother
Sent from my awesomely EPIC Phone
Click to expand...
Click to collapse
Are you reading? He obviously cant text at home.. he did say 3g but probably doesnt know what HES talking about.. i think its safe to say hes getting NO signal since he is unable to send text messages.. thus want other options to send text messages which people are giving.. he doesnt care how the network works and how it uses 1xrtt and not his 3g radio.. he just wants optiong to improve him sending messages at home which no matter how we put it, theres only a few options we've already determine which is 1: google voice or other voip messaging app. 2: using roam control to make sure he has signal to send it regularly while roaming. 3: can get airrave and hook up to his wifi at home to bost his signal inside of the house. 4: leave his house and go walk around til he can send one lol 5: someone said theres apps which allow you to send it over data which then gets converted in the tower and sent as normal.. good luck OP! Probably already found a way just wanted to try and get the thread back on topic for ya lol
Sent from my SPH-D710 using XDA

elliwigy said:
Are you reading? He obviously cant text at home.. he did say 3g but probably doesnt know what HES talking about.. i think its safe to say hes getting NO signal since he is unable to send text messages.. thus want other options to send text messages which people are giving.. he doesnt care how the network works and how it uses 1xrtt and not his 3g radio.. he just wants optiong to improve him sending messages at home which no matter how we put it, theres only a few options we've already determine which is 1: google voice or other voip messaging app. 2: using roam control to make sure he has signal to send it regularly while roaming. 3: can get airrave and hook up to his wifi at home to bost his signal inside of the house. 4: leave his house and go walk around til he can send one lol 5: someone said theres apps which allow you to send it over data which then gets converted in the tower and sent as normal.. good luck OP! Probably already found a way just wanted to try and get the thread back on topic for ya lol
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
Google voice will only allow you to text over your google voice phone number... If you use google voice to manage your SMS and text using your phone number, it will still send it via SMS (1xRTT control channel) and will fail There is no alternative when you want to use your actual phone number except for utilizing the sprint web tool.. log into your account and send a text message from the web tool.\
Note: I am one of those people that will correct wrong information if i see it, even if it doesn't 100% pertain to the original post. IMHO it is the only way to ensure people don't start repeating the wrong information and exponentially make it harder to teach people the correct answer.

[Q] Video calls

Is there a way to make a normal carrier video call (not one using 3G data or WiFi) ? A friend of mine has the option with his GS1...

If he's making a video call, he's definitely using 3G data.
The only thing I can think might be happening is that his carrier doesn't count the data that's used for carrier video calls and charges him some other way?

intern said:
If he's making a video call, he's definitely using 3G data.
The only thing I can think might be happening is that his carrier doesn't count the data that's used for carrier video calls and charges him some other way?
Click to expand...
Click to collapse
nope, his 3g data connection is turned off. The thing is that he has the simple option to make a voice OR video call without using 3rd party application...here the carrier based video calls are free(costs the same as a regular voice call) but seems like the Gnex doeant have such option.

lioncrowe said:
nope, his 3g data connection is turned off. The thing is that he has the simple option to make a voice OR video call without using 3rd party application...here the carrier based video calls are free(costs the same as a regular voice call) but seems like the Gnex doeant have such option.
Click to expand...
Click to collapse
AOSP does not support video calling through carrier, and it will never do. Samsung have made this available on their own handsets. The reason...probably because the US doesn't support it, or that Google wants people to use Google voice instead?
Swype'ed on my CM10 Galaxy Nexus

[Q] Ignore calls and not drop LTE

I tether my i317 Note 2 on T-Mobile to video chat. I need LTE to video chat. Whenever I get a call, it switches to 3G and kills the video chat.
I tried "blocking mode" in settings, "ignore all numbers" in the phone settings, and both, and regardless, whenever someone calls, while it does 'block' the call (doesn't ring, immediately shows as missed) it drops LTE every time and video chat stops.
My workaround after it drops LTE because of a call is to disable mobile data for about 5 seconds, turn it back on, and hope it connects back to LTE. Most of the time it will reconnect to LTE, some of the time it will reconnect to 3G. Either way, it's driving me nuts and hurting my business.
I need the phone to stay on LTE even if someone is trying to call me. I'm thinking of changing my number to Google Voice and using forwarding to go to my phone. That way, I can disable call forwarding on Google Voice and people straight up won't be able to call my phone and disable LTE unless they randomly dial the phones random number instead of the Voice number.....kinda complicated to do that.

Stock ROM has band selection which should do the trick. It's accessible from the service menu. (I forget the dialcode, shouldn't be too hard to find))

[Q] Voice calls and data at the same time?

Hello,
I just got this phone yesterday. Upgrading from HTC Evo 4g LTE.
Today I was on a conference call and tried to access the web and could not. I noticed I did not have the LTE or any indication of mobile data networking ( associated icons). Does this phone handle voice and data at the same time ( not on wifi ).
If not I will have to return this in disbelief.
Thanks
Mike

Please close this thread. After searching i found this thread:
http://forum.xda-developers.com/note-4-sprint/help/simultaneous-voice-data-t2893885
Doesn't seem like you can use data and voice together. A work around looks like hangouts dialer. I just downloaded it. Error " phone calling is not supported for this account with this version of hangouts ". Guess i'll have to use the search field to see what/if anything can be done.

Even though I got that error message I was able to make a call. Worked on Wifi and LTE network....this might work out.....

mike929 said:
Even though I got that error message I was able to make a call. Worked on Wifi and LTE network....this might work out.....
Click to expand...
Click to collapse
This is a Sprint Spark limitation. All Sprint Spark phones are limited to 1 radio at a time, so you can't have 1 channel running voice and another running data. When you are making a voice call your phone drops down to 1xRTT. The up side is better battery life and the ability to use 800mhz, 1900mhz and 2500mhz LTE (one at a time), the down side is no Simultaneous Voice and Data (unless you are on WiFi).
In the long term everyone will move to Voice over LTE, which will allow data and voice simultaneously again. There is no time frame for this yet with Sprint and the Note4 was listed in the FCC specs as not supporting VOLTE.

Do all new sprint phones have spark? Any time frame for volte?

I had heard whether it's true or not Intel late 15 early 16 for the start of roll out of volte.
Sent from my SM-N910P using Tapatalk

Thanks everyone. Guess i will have to see if i can do without data while using voice.

Get a note3 pretty close to the same phone ya I know there are some major difference but if u really need date and voice that will be way more important than any lil difference between phones
Sent from my SM-N910P using Tapatalk

Thanks @sliverr7x, I would do that, but i want the newest available phones.