Stack Overflow
Stack Overflow

Questions tagged [gprs]

GPRS refers to the 2G/3G data services provided by the mobile operators over GSM network.

GPRS refers to the 2G/3G data services provided by the mobile operators over GSM network.

435 questions
6
votes
3 answers

Enable/Disable Mobile Data (GPRS) using code

I was having one solution for enabling and disabling data that was working good in API 8 and 10, but that code was not compatible with the ICS, I need a global solution, so that the same code must be compatible from API 8 to till date Android OS…
Caution Continues
  • 743
  • 2
  • 10
  • 25
5
votes
2 answers

How to send Ctrl+z with gprs module

i want to send a picture with GPRS module and through a TCP connection to a server. but my picture contains some "1a" (CTRL+Z) value in some bytes. As we know this is the terminator character for sending sms or data with AT commands. how can I send…
s4eed
  • 7,173
  • 9
  • 67
  • 104
5
votes
1 answer

HTTPS requests on A9G via AT commands fail after 7 requests; HTTP works fine

I'm using AT commands to communicate with an Ai-Thinker A9G chip from an ESP8266, as part of a GPS tracker unit. It works fine to start with, then HTTPS requests start failing after sending 7 or 8 successfully. However, it's still fine making HTTP…
Mark Ormesher
  • 2,289
  • 3
  • 27
  • 35
5
votes
0 answers

On the SIM800, what is the difference between the "at+sapbr" commands, and "at+cstt", "at+ciicr" etc?

I understand that "at+sapbr" is used for setting up an HTTP or FTP connection and that "at+cstt" , "at+ciicr" etc. are used for just a TCP connection. However, from what I understand, HTTP/FTP are just a layers on top of the TCP protocol. Why…
Michiel van Lohuijzen
  • 51
  • 2
5
votes
2 answers

Android, How to handle change in network (from GPRS to Wi-fi and vice-versa) while polling for data

I use DefaultHttpClient and HttpGet to poll data from server. Now, say a user was in Wi-fi network and moves out of the room. So the phone automatically starts using the 3G network. Are there any call-backs for such change, and how should I handle…
pankajagarwal
  • 13,462
  • 14
  • 54
  • 65
5
votes
2 answers

sending Json data to server using AT commands

I am having a website which accepts json data with post method.It works fine when i try sending the request from POSTMAN rest client. When i am trying to the same using AT commands its failing. This is the AT sequence i tried AT AT+CREG?…
ganeshredcobra
  • 1,881
  • 3
  • 28
  • 44
5
votes
2 answers

sim800 at command post data to server

I'm stumped with sending data to a remote server , I'm able to send a post request but not sure how to add data which is then received by the server. I've went through the datasheet…
trojan_spike
  • 187
  • 1
  • 1
  • 9
5
votes
2 answers

Detecting and changing programmatically data connection (GPRS/UMTS) on Android

I know that unfortunately detecting and changing programmatically data connection (GPRS/UMTS) on vanilla Android is not possible, and the common workaround is to edit APN settings. This is hardly a nice solution. However on my device (Xperia X10) I…
lornova
  • 6,667
  • 9
  • 47
  • 74
5
votes
2 answers

Why GPRS modem provides embedded TCP/IP stack

My colleague and I are mining the GPRS MODEM market for a module suitable for use with embedded Linux. During the market scan, we see that several vendors highlight that their MODEMs include an embedded TCP/IP stack. This makes me wonder: when we…
Christian Madsen
  • 1,688
  • 4
  • 17
  • 30
4
votes
1 answer

Is my SIM card faulty or is my provider annoying me?

I'm trying to establish a PPP connection using pppd and AT Commands. This usually works fine with a SIM card of my local provider. However, I received a card from a friend that is living in Germany and I wanted to give it a try from Switzerland but…
morandg
  • 1,066
  • 3
  • 14
  • 30
4
votes
4 answers

How to find the GPRS/3G network data transfer speed in android?

in my application i need to find the speed of connected network (wifi/GPRS/3G). Here i need help to find the speed of GPRS/3G network. Can you please help me how to solve this problem.
VenkaReddy
  • 2,871
  • 2
  • 27
  • 29
4
votes
3 answers

Detecting near-by phone numbers

Trying to figure out some sort of method in which it would be possible to detect nearby phone numbers e.g. within a private premises. My only lead so far is to build a mini mobile base station that would let phones connect to it - even then my…
Muhan Alim
  • 479
  • 1
  • 7
  • 17
4
votes
2 answers

GPRS remote printer

We have a custom remote printer designed with GPRS module. We now need to communicate with the device over the web. We have to send messages and receive messages from the remote printer, can i do this using Java or PHP. How do i communicate through…
user160108
  • 930
  • 3
  • 8
  • 38
4
votes
0 answers

Gprs server setup and data sending

I recently bought a gps tracker with gsm and Gprs support, I want to send data from gps to my GPRS server(located in my house) and from there to use data..., my problem is that I don't know how to set up GPRS server, what do I need, which programs…
TestAndSet
  • 51
  • 8
4
votes
1 answer

SIM900 GSM/GPRS not getting a proper AT+CREG? answer

I'm using an Arduino UNO with attached IComsat SIM900 GSM/GPRS shield. Using the following tutorial: Arduino Live GPS Tracker I'm stuck with the AT+CREG? command, which checks if the SIM-card is registered at the provider. The following logic is…
Daniel
  • 1,179
  • 4
  • 18
  • 31
1
2
3
…
28 29