[Q] do text messages use towers or wifi - Sprint HTC EVO 4G LTE

Does anyone know for sure if the phones use only the towers for sending text messages? Can wifi be used for sending text messages?
A friend is having issues sending text messages from his apartment, but if he goes to the middle of the parking lot, no problem.
He has one of those signal boosters from Sprint, is this the cause of the problem??
Can anyone clear this up?
Thanks

Your phone is constantly sending and receiving information. It is talking to its cell phone tower over a pathway called a control channel. The control channel also provides the pathway for SMS messages. When a friend sends you an SMS message, the message flows through the SMSC, then to the tower, and the tower sends the message to your phone as a little packet of data on the control channel. In the same way, when you send a message, your phone sends it to the tower on the control channel and it goes from the tower to the SMSC and from there to its destination.

Related

Sms through wifi?

Reception at my house is horrible and I'm not getting messages until I leave the area..... however when i send them.. The recipient gets then right away.... Why? And is there a way to force the phone to check for sms waiting to be received? Maybe through my wifi?
Sent from my FroyoEris using XDA App
No MMS via external networks.
Verizon uses something called "split DNS" so that you can't even get a successful DNS lookup (IP Address) of the hosts mentioned in your phone's APNs if your only active interface is the WiFi I/F - but if you look up them up via the Mobile Network I/F, you can find them.
If VZW does that, then it's also highly likely that they perform ingress route-filtering in the IP layer. You can't contact VZW's MMS servers "from the outside world" - only from Verizon's own network. (Your phone's Mobile Network I/F has an IP address assigned within one of VZW's blocks of addresses).
Presumably this is done to prevent free-loading, spamming, or DoS attackes on MMS servers from networks outside of Verizon's own.
In any event, no MMS via WiFi.
bftb0
PS As for the asymmetry in delay between sending and receiving at your location via the Mobile Network - no clues.
rd5150 said:
Reception at my house is horrible and I'm not getting messages until I leave the area..... however when i send them.. The recipient gets then right away.... Why? And is there a way to force the phone to check for sms waiting to be received? Maybe through my wifi?
Sent from my FroyoEris using XDA App
Click to expand...
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using google voice helps. i have the same problem at my house and i just use google voice
GV is probably the best bet
There is another one called text plus. Stay away from that one. My brother in law went to Europe and used that app although it worked it was like a half an hour wait to get messages. I figured there is a lot of "routing" but from home I had the app installed on my wifes and my phones. In the same house connected to the same network of course it was like 20 minutes to receive the message

[Q] Cell Broadcast (CB) In text message settings?

When i go into my SMS Message Settings down near the bottom i get an option to toggle Cell Broadcast (CB)... Then from there i can recieve on my channel or all channels. Then you can select languages. Well my question is what is it & what does it do? Is it for advertisements? Amber Alerts? Does anyone know?
I've always wondered myself so after reading your message I googled it and this is what I found:
http://en.wikipedia.org/wiki/Cell_Broadcast
Thanks for the link... That is a pretty cool feature, i wonder if t-mo has it enabled yet? Could be so useful. Thanks again.
I don't think its a matter of anyone enabling it but a matter of who really needs it. The average user may need to send a text to multiple people and can do that. Where cell broadcast comes in is when you need to send a text to a large number of people at once. My university uses this to send out emergency messages on all networks. My school has probably 15000 students and faculty then figure in another couple thousand family and alumni members that live in the community. Hope this helps
Sent from my SGH-T959 using XDA App

SMS not sending during phone call

I don't know if this is happening to anyone else, but I haven't been able to send any text messages while I'm on a phone call. I've tried different numbers and it always fails. Anyone else having this issue?
I sent a bunch of texts during a phone call just fine from my home, which is in a fringe service area (I get 4g tho, but roam routinely). I did this over 3g.

No voice call if receiving text?

Has anyone noticed an issue with voice calls going directly to voice-mail if they come through at the same time as sending or receiving texts?
Background:
I have G-voice installed and running strictly as my voicemail service. This works out well for me as it will send me an email notification of a missed call whereas without it if I have no coverage and someone calls me I would never know about it.
I am a Firechief for an oil refinery and I use the phone as my fire call-out pager too. Its rather important that I get my calls.
I have noticed in the past that people would tell me they called but it went to my voicemail. After installing and using G-voice for voice mail, sure enough when they told me that, I would get a missed call notification from G-voice.
We use a call-out system called Send Word Now that will send me a voice call and a text message together when activated. Apparently is at exactly the same time because when I tested it I would only ever get the text mesage and a missed call notification.
My Question:
Has anyone else noticed this and figured out why? It would seem that with a 4G connection and all the data bandwidth available the phone should have no problem doing both. In fact, I can get plenty of text mesaages or incoming calls if I am already talking on the phone.
Just as an update to my own thread in case anyone searches this oddity. The messaging center today informed me that they know of the issue and ALL phones and providers will act the same way. As in, if you get an oncoming call at the same time you are sending or receiving a text the call will go straight to voicemail.
Sent from my SGH-I777 using XDA

Send SMS without data connection

Silly question. But are there any apps that let you send a text when you have a cellular signal but not a data connection?
My office has terrible cell service, oftentimes resulting in the data (4g) dropping, while still maintain regular bars of signal.
It seems nowadays all text apps send SMS through the data connection so in the above scenario I usually get failed messages when trying to send.
So any old fashion texting apps that don't really on a data connection?

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