I'm hoping for something like. Or if some one can tell how can I set the UDH in sms message in Windows Mobile. Google Voice - Python - SMS. Best answer: You can try msg command. NET SMS SERVER with Database (Sending and Receiving SMS using AT Commands via GSM Modem/GSM Phone ) | Free Source Code & Tutorials. It's a way to send short, text-only messages from one phone to another. SIM SMS Center Number: +8613800592500 Send SMS Center Number: Undefined Last event: Hangup State: READY Last send AT: AT+CREG?\r --END COMMAND--Figure 5 Example Command. Multi-Tech Systems, Inc. able to read the data using labview but unable to send AT commands through labview VISA. Sending an email as an SMS. The sketch is similar as earlier except below code snippet. With this number, you can send SMS commands to your device. Message and data rates may apply. When the pushbutton is pressed, the Arduino sends the AT commands to the GSM module, for a text SMS; the GSM module works with the "AT commands". Sending SMS messages is super easy. All the settings are through SMS commands, please edit the below SMS commands in your cell phone, then send to the RTU5015 Unit. NET using GSM Modem and AT(ATtention) Commands. Send Long SMS/Multipart SMS/Concatenated SMS. With Online AT Command Tester tool, you can send SMS messages in Text or PDU format. 1: SMS AT commands are. A 16-bit text message of class 0 will on some phones appear as a Flash SMS (aka blinking SMS or alert SMS). But as discussed above, the Linux serial console is designed to operate with a dumb modem. How to send AT commands by SMS? 2019-01-29. Then you can use RxTx driver to send command to serial port. Once the connection is established, we send below AT commands: AT+CMGF=1 – Selects SMS message format as text. The friendly user interface allows developers to Configure and connect to modem ports Send single or batch of AT commands Perform modem diagnostics Establish 3G or GPRS call. Where do new SMS messages arrive to? The lowest open spot? Does a new SMS coming in, change where the existing messages are? FIFO type arrangement? What is the proper method for clearing/deleting received SMSs, and then making sure you are reading the correct memory location for the next coming message; REFERENCE. The following lists the AT control commands that a device is expected to support. :confused: And also exactly i don't know the SP name (9 Replies). Developed by XDA member jkok, SMS Tasks is a tiny app that lets you remotely execute commands on your Android phone by sending it an SMS. Project How to: Send an SMS with PIC16F628A and SIM900A 3 years ago by Jens Christoffersen In this article I'll show you one way of sending an SMS using a PIC 16F628A and a SIMCOM SIM900A module. In this device whenever the switch is pressed, a text message (text in the code) will send to the number specified in the code. StreamSend gives you the ability to track email campaigns, social engagement and video views from one central location. For example, some phones may support send command only and not support read command. In this post we will learn how to read SMS in an Ionic app automatically. Once the connection is established, we send below AT commands: AT+CMGF=1 – Selects SMS message format as text. Some advanced GSM modems like WaveCom and Multitech, support the SMS text mode. GSM modems and AT commands. It can be used with any GSM modem or phone handset connected to the PC serial port using a data cable or Infrared device etc. Here's how to send SMS Messages on a PC using mysms: 1. To check whether your modem supports SMS Text mode (instead of Binary PDU mode) use the following command. exe is a command line tool that forward SMS through HTTP to an SMS gateway. By default this folder is /var/spool/sms/outgoing. It is possible to send an SMS command to your Mac using an AppleScript. Thanks a lot for the code but i couldnt able to send the. i am using Reliance India Mobile Phone (Wireless Land Line Phone), MODEL: LG LSP 350 R. So if these apps can do these things at your command, what makes you think a hacker can't hide these malicious tools in an app without your knowledge?. Then - hopefully! - an SMS will be sent 🙂 The source is on GitHub. Then you need to input the destination number and of course the content of the message itself. Messaging and cellular data rates may apply. This means if you want to control SIM900A with arduino. Sending emails from Microsoft Access databases is a very powerful feature. The tool will automatically detect what format (Text or PDU) is currently set on the device and will send appropriate AT commands to send the SMS message. Use the filter options to reduce the number of names listed and click Refresh to populate the list. The latest Tweets from Stargate Command (@stargatecommand). AT+CMGS="+yyyyy" > Your SMS text message here ; The "+yyyyy" is your receipent's mobile number. Then send SMS messages using a protocol / interface supported by the SMSC or SMS gateway. You can use email, SMS, IM, web or any of the Twitter clients to send commands to the remote computer. To terminate a command line. What are the Hayes AT commands for this?. Reading a SMS message from the Inbox: To read the first SMS from the inbox send the command AT+CMGR=1 followed by \r\n. The AT+CMGF command sets the GSM modem in SMS Text Mode or SMS PDU Mode. This way you can tell the SIM800L module either. The microcontroller will wait to receive the "OK" signal from the XBee module; Once the "OK" signal is received, the microcontroller will send the command string "ATID" over XBee UART. AT+CMGF=1 set the GSM modem in text mode. Code is kept very simple we are using we are using few AT commands to send the SMS. I suggest you to go through that article before proceeding in this. Use Google applications via SMS text message. Other Questions or concerns? If you have any more questions, comments or concerns, please feel free to contact us at [email protected] This time we are going to show you how we can send SMS using our Sixfab GSM/GPRS Shield. Sudo, stands for "superuser do," is a system command that allows a user to run applications or commands with the privileges of a different user without switching environments—most often, for running commands as the root user. In text mode this command is less powerful than in PDU mode but it is certainly easier to use. Next you have to send the command AT+CMGS=”mobile number” to the GSM module for sending the target mobile number to the GSM module. Hello everyone! I am using sim800 module. Null-modem emulator The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. Learn how to sends SMS, receive SMS, make and receive phone calls with Arduino. ‘AT’ command only checks the status of the gsm module working or not. So if these apps can do these things at your command, what makes you think a hacker can't hide these malicious tools in an app without your knowledge?. You can now send AT commands to the modem, and easily send text messages. Baseband Commands Main article: List of baseband commands. The format is AT+CMGS=”mobile number”/r. Verify on the recipient's phone that the SMS was received. You need to connect to your. If the command was invoked properly the current AT command interpreter will be in text mode. By connecting a laptop computer, a personal digital assistant, a fax machine. As part of this production I needed to build a system that could send and receive SMS messages from audience members. Featuring an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. Added new command. We assume that you are using a GSM modem for SMS messaging, the modem is attached to the serial port of the computer with a phone-to-pc data cable and SMS receiving works. The AT interface itself is ASCII only, so if you want to do anything other than ASCII text you need a device that provides you a way to put Arabic text over that interface - effectively an encoding scheme, at which point you might as well be using PDU mode anyway. If you do not receive confirmations, please verify the command format, and make sure that your phone is added as an Admin Phone; All SMS commands and responses are invisible on the child’s phone once an “Admin Phone” is selected. 1- Insert a form in VB project 2- Insert textbox (txtMsg,txtDestinationNumber) 3- Insert command button (Command1) 4- Insert a MSComm1 5- Connect your mobile phone in…. I'm hoping for something like. You can check and send SMS using AT commands. i want to use the shield to send sms and Using an UART-USB cable/chip you can send commands directly. SMS Frenzy Professional is a SMS Sender Software which enables you to connect your pc to a GSM device/mobile phone and send unlimited SMS. AT+CMGF=1 OK AT+CMGS="99xxxxxxxx" > This is a test message > OK. AT+CMGF=1 Select SMS message format AT+CMGF=1 OK AT+CMGS="15124532672" Set the message transmission number and send SMS message. Enter a phone number or contact, type your message, and then select Send. "this is test SMS". it supports gprs and edge services. send SMS with SIM 900. In text mode this command is less powerful than in PDU mode but it is certainly easier to use. The command set for GSM modems is specified in 3GPP specifications, TS 27. Please tell me how do i send a long sms exceeding 160 characters using AT command (Dongle). The latest Tweets from Stargate Command (@stargatecommand). The point of Windows 10 is to have a single core operating system that runs on PCs, tablets, phones, and Xbox, and while there is still a long way to go until the unification is complete, Microsoft is now releasing a preview build of Windows 10 Mobile that allows Cortana to send texts from your PC to a phone. The friendly user interface allows developers to Configure and connect to modem ports Send single or batch of AT commands Perform modem diagnostics Establish 3G or GPRS call. Hello all, I'm trying to send SMS with GSM modem using c# & AT Command. Using AT commands you can easily send an SMS message from your device. msc in search box (Or type it on Start > Run). So I want to send only one command the sms will send. Also note that h exten is executed for SMS/USSD just before Local channel is destroyed. SMS_Client is a free command line tool for Linux that can send SMS messages to a lot of different cellphone providers. Send and Read SMS through a GSM Modem using AT Commands The following is the snapshot of the GSM SIM 900 Shield with Arduino Uno, Figure 1: GSM SIM 900 Shield with Arduino Uno Prerequisites. sms send 1234 "hello" Once you type this command , hit enter. Here is a quick tutorial to demonstrate How to send sms using AT command with GSM GPRS Modem. In this weekend, I try to send SMS from Raspberry Pi with USB 3G, and i was successful. AT commands are instructions used to control a modem. What are the Hayes AT commands for this?. Generally following features are supported: Call listing, initiating and handling SMS retrieval, backup and sending MMS retrieval. Read on, to learn the simple technique of how to send a text message from your email inbox. Problem is that you cannot received SMS to IWS via that way. Then, you can type the command that you want, have fun. New features in HTML5. It automates the attacks and generates disguising emails, malicious web pages and more. How to send MMS Using AT commands - NowSMS. All you need to do to compose your messages is say “text by voice’”, wait for the app to affirm your command, say the recipients name, record your message, confirm it and finally, send it on its way. 16 Command Examples to Send Email From The Linux Command Line. The command AT+CMGF=1 sets the "Message format" to "text mode". Twilio (sms to sms over web via their api) is a better choice at US $0. For more information please visit us - sending sms. Then send SMS messages using a protocol / interface supported by the SMSC or SMS gateway. The SMS Server Tools runs on Microsoft Windows (with CygWin) and any Unix including Solaris, BSD, FreeBSD and GNU/Linux. Here I am writing about most awaited post of my blog with great excitement. For the following steps open a terminal prompt aka "Command Line Interface" or "CLI". message not sent As you can see an ERROR appears, and I really don't know why. to the phone number connected to the watch. Using the serial monitor of the Arduino Software (IDE), you'll enter the number to connect with, and the text message to send. AT+CMGF=1 Select SMS message format AT+CMGF=1 OK AT+CMGS="15124532672" Set the message transmission number and send SMS message. To send AT commands to the modem you must use a communications program, such as the HyperTerminal. Send a command with AT+CMGS="+1224XXXXXX" Now send a command with the text message that you wish to send with a in the end. 09 2 2015-08-03 Document Title: SIM800 Series AT Command Manual Version: 1. 007 AT command set for User Equipment (UE) † TS 27. cool rooted the phone, still sending sms messages. 38 (=ETSI TS 100 900). Modified the parameter to be optional. You can make separate chat with you partner. DoCmd SendObject Command in Microsoft Access: Features and Limitations for Sending Emails. I wanted to create an interactive command line script that would allow me to either send an SMS message or call everyone in one of my Google Contacts Groups. A flash is a special signal send to some telephone equipment, like a phone exchange. That's why modem commands are called AT commands. Send SMS from a Raspberry Pi. Command Line delivers daily updates. Standard Gulp Commands; Appium Style Guide; How to Write Docs; Appium Package Structure; Send SMS. Online SMS Bomber sites and Text Bomber to send unlimited SMS to any Mobile Number. A unique identifier (ID) is returned in the response that may be used to query the status of the message that has been sent. 3V power domain, directly connected the UART port of Raspberry Pi. How to Send Text Messages With PHP by Kevin send a single SMS, or send bulk SMS to a group or multiple groups (Hayes) command set. Python Programming: Sending SMS using AT Commands To test the program, we'll send it to a recipient phone. You can send and receive text (SMS) and multimedia (MMS) messages using the Messages app. We can call/send sms and normaly connect to the website and surly use MQTT(i will explain why after). Is there any way to send a longer sms? Any commands applied? All help is much appreciated. Once the connection is established, we send below AT commands: AT+CMGF=1 – Selects SMS message format as text. Frank McKenzie, head of U. Giving the Raspberry Pi a Serial Modem Using the HUAWEI E3531 USB Dongle (+ Send SMS) : Hi, here we will give the Raspberry Pi 3 a serial modem using the Huawei E3531 USB dongle. Issue resolved. Added description. I tried using mail command its not working. You can connect up to one GSM device at a tie and can send "N" numbers of SMS in a single click. Send Long SMS/Multipart SMS/Concatenated SMS. The TextMagic API Python wrapper can save you a lot of time, as it includes all the necessary API commands and tests. Hello, I am using Fargo Maestro 100 GSM Modem to send sms. Start by opening Command Prompt (Windows) or Terminal (Mac), then type in telnet and press ↵ Enter. The GSM AT command set. Scope of the Document This document presents the AT Commands Set for Quectel cellular engine M66. If the command was invoked properly the current AT command interpreter will be in text mode. sms send +651234567 Hello my friend! The syntax of the sms send command is as follows: sms send Figure B-19 shows the emulator receiving the sent SMS message. This mode allows you to send SMS messages using AT commands, without the need to encode the binairy PDU field of the SMS first. A service command is created to send service alerts by SMS. We’ve already published the list of AT commands and the tools that will help you to send that commands. GSM0000AN004 Page 1. NET; Send SMS Text Message with PHP; Send MMS Message from Command Line; Send SMS from PHP Script; Send MMS from the Command Line; Send MMS Message. to send and SMS to my cell with no problems using this tool. You can connect up to one GSM device at a tie and can send "N" numbers of SMS in a single click. Added new command. This article explains how to add the capability of sending text (SMS) messages from a desktop application. NET Forums on Bytes. They get powerful business text messaging features, such as templates and assignments, from any Slack channels. Sms Using Cdma Modem At Commands Codes and Scripts Downloads Free. Here is the example: 1- AT+CMGS="+91232538538" 2- > Hello GSM 3- Press Ctrl + Z and Enter Now I want to use this command in VB. com to send text from bash. This time we are going to show you how we can send SMS using our Sixfab GSM/GPRS Shield. SIM toolkit commands. SMS_Client is a free command line tool for Linux that can send SMS messages to a lot of different cellphone providers. SIM800 Series_AT Command Manual_V1. "Collaborative production is simple: no one person can take credit for what gets created, and the project could not come into being without the participation of many" - Clay Shirky. Once these commands are send to GSM module, you shall receive an SMS in the set mobile number. Chapter 1 - Introduction Multi-Tech Systems, Inc. SMS APPLICATION - DEVELOPING SMS APPLICATION; Sending SMS - Using At Command And After Converting The Msg In To PDU; SMS Sending And Receiving Application Using VB. If you wan to learn all the commands go through the data sheet of sim900 module. A vulnerability has been discovered in the Linux sudo command that could allow unprivileged users to execute commands as root. This guide will also demonstrate that how you can enable mikrotik to receive SMS via GSM modem and execute script based on the command received in the SMS 🙂. BC95 AT Commands Manual BC95_AT_Commands_Manual 8 / 120 1 Introduction This document gives details of the AT Command Set supported by Quectel NB-IoT BC95 module. I can use Hyper Terminal to send sms using Infrared. Every wireless, as well as the dial up modems, require an AT command to interact with a computer machine. Online SMS Bomber sites and Text Bomber to send unlimited SMS to any Mobile Number. Unstructured Supplementary Service Data allows interactive services between a MS and applications hosted by the Mobile Operator. For each SMS message that you send, Amazon SNS writes a log that includes the message price, the success or failure status, the reason for failure (if the message failed), the message dwell time, and other information. Mostly, this is used for automatic approval of OTP and passwords in authentication or online payment processes. You can c. As usual, serial needs two pins that is Transmitter (Tx) and a Receiver (Rx). I have teltonika e12 gsm modem. (61) Live video streaming with PHP (49). Text these commands to GROUP (+1 9734196864) #new [topic] Creates a new group with a unique phone number. One day the two will be completely interchangable and probably more popular than email. An intermediary service can facilitate a text-to-voice conversion to be sent to landlines. You’ll need a Smart Phone with data or WiFi access. To be able to send SMS text messages, the Enfora Enabler-G module must be initialized with the proper SMS mode. You can connect up to one GSM device at a tie and can send "N" numbers of SMS in a single click. and how to connect the service i am new in AT commands and i am working on C# project. Let's quickly look at each of them. This should rattle him a bit and give me a few chuckles as he is madly in love with her. i installed go sms pro and set the custom smsc there. Hello, I am using Fargo Maestro 100 GSM Modem to send sms. SMS (Short Message Service ) Hi. If this parameter is not 0, it will send to a new PC. This command set must be in 3 digits and the maximum value is 255. Hi to all, i use a Sim900 of SimCOM if i sand AT command or other commands all work well, but i have a problem for sand a SMS i write this code. how to use at-command in C# ? Can anyone send me code for receiving sms from pc connected to mobile or read sms from mobile's inbox to PC application. Spy phone, spy on calls, spy on sms, spy location and GPS location. ) to executing any terminal commands on it and more. Download Putty from here. 05 General Notes SIMCom offers this information as a service to its customers, to support application and. This program uses the text mode for sending the message, which is good for starting, but it may not be supported by every phone. Tools: Send command. Discover a quick, simple way to connect via texting online anytime, anywhere, with the Skype app. Time interval and repeat time must be in 3 digits length. Send SMS via HTTP. #new [topic] - Starts a brand new group, with its own unique telephone number. And this is the complete tutorial. SMS Frenzy Professional is a SMS Sender Software which enables you to connect your pc to a GSM device/mobile phone and send unlimited SMS. Build amazing experiences easily with our SMS API, plus all the resources you need. 01 2 2016-08-01 Version History Version Date Chapter What is new V1. Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. warp*CLI> gsm send sms 1 xxxxxxxxxxx "please respond" SMS successfully transmitted on port 1. Sending and Receiving SMS from your Linux Computer. The syntax is: gsm send sms port number "smstext" where 'port' is the GSM port to use on the appliance, 'number' is the phone number of the recipient and smstext is the message to send. your password. how to use at-command in C# ? Can anyone send me code for receiving sms from pc connected to mobile or read sms from mobile's inbox to PC application. , iPhone) or device for free (and without ads), from the command line. The latest Tweets from US Strategic Command (@US_Stratcom). Null-modem emulator The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. The module will combine the PDU data for us and it will send it to the network afterwords. In most Linux distributions do this using Ctrl+Alt+T. The GSM AT command set. The following string will be output after booting the module: NeulOK. This API allows you to send AT commands directly to the cellular module. Adopt SMS technology into your Nagios based system in order to send SMS notifications or alerts from PC to mobile devices. Quectel offers this information as a service to its customers, to support application and engineering efforts that use the products designed by Quectel. In this device whenever the switch is pressed, a text message (text in the code) will send to the number specified in the code. Sending SMS is quite easy, you just need to write some. co/QgAwge6z0Z. 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. , iPhone) or device for free (and without ads), from the command line. There's many ways to do this and one way I've done this in the past has been to use a phone service to read and write from a database and have database triggers work with a gateway to send and receive SMS messages. If everything is OK, you will see the following message box:. To terminate a command line. SIM800 is one of the most commonly used GSM module among hobbyists and Arduino community. Sending SMS using AT commands. What are the Hayes AT commands for this?. Send SMS using push switch. can i send MMS using gprs service?? if yes then what command is use to send and receive MMS using AT commands. I am new to AT commands. OS X Daily recently outlined a new hint which allows you to send text messages to any SMS-supporting phone for free, from the OS X command line (or any OS with a command line supporting the "curl. That is pretty easy to send sms and call a phone using SIM800L GSM module. Hi Friends, I have created an application that send each and every bill details SMS to Customer's via PC using AT commands. You can start to send and receive AT commands over USB thanks to ‘USB to serial UART translator chip’ on the shield. I found a reddit article: Send an SMS Text Message from the Command Line with this Bash / Terminal command you can use:. finally i got the idea it is possible with AT Commands C# , and i. Change the mobile number with the number, on which you want to send the SMS, I have written mine. The PDU format. Threading Imports System. Find out how to send text as email or email as text. With this number, you can send SMS commands to your device. SMS Texting from Terminal / Shell / Bash. First amke hardware connection, like arduino tx (pin no. Report 4 years, 11 months ago. Learn about all of our smart devices that keep you connected when you’re away from home and make being on the road easier. 1) For GSM SIM cards, you can test the SIM card in a cellphone to determine if it can send and receive SMS messages. A 16-bit text message of class 0 will on some phones appear as a Flash SMS (aka blinking SMS or alert SMS). Please note that X-Lite does not come with a voice, video or messaging service – you must pair it with a VoIP service or IP PBX in order to make calls or send messages. I also want to be able to queue a checkin with PULS command over UDP because the units only awaken every hour and most of the time the sms commands sent when the unit was offline will not got thru for hours and hours. When ready, you can click Send. This will submit SMS to network and will return the Message ID. to Send SMS using AT Command from VB. I wanted to make it a little more command-line-friendly, so I rewrote it (ham-handedly) in Ruby and added some options parsing to it. With Online AT Command Tester tool, you can send SMS messages in Text or PDU format. AT+CPIN? Check the PIN status of the SIM card. Null-modem emulator The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. (s:second, m:minute, h:hour). ” Your phone will be at full volume even if it’s in silent or do-not-disturb mode. The latest Tweets from Stargate Command (@stargatecommand). At Commands Sending Sms Gsm Modem Java. In most Linux distributions do this using Ctrl+Alt+T. I can only send sms with max length of 160 (text) and 280 (PDU) for each sms. Android Debug Bridge (or ADB for short) serves as a remote terminal interface for executing shell commands on any Android device. To configure the APN on a GPS Tracker TK104 family, so that the device can establish a data connection, you will need to do it over SMS. First, run Minicom. AT Commands to Send/Receive SMS. The GSM modem can be configured to response in different ways when it receives a SMS. Hi Friends, I have created an application that send each and every bill details SMS to Customer's via PC using AT commands. Optionally (when AT+CSMS value is 1 and network supports it) is returned. That's why modem commands are called AT commands. Send sms using gsm module and pic microcontroller: this article explains how to send sms using gsm module and pic microcontroller. This will submit SMS to network and will return the Message ID. AT+CIPCLOSE=[] Added three parameters. all modems support AT commands but i couldnt make out whether all gsm modems can be used to communicate to computer through hyperterminal so as to send,receive and delete sms in the mobile set. it supports gprs and edge services. SimpleCommands makes it simple to send and automate commands to your connected “Items” like connected smartbulbs from LIFX and TP-Link, WIFI thermostats like Nest Labs and via Wink smart home hubs, all kinds of garage door openers, alarms and doorbells from ring and many other online products and services. My principle instrument is to send the results of the counter on gsm no other. I found a reddit article: Send an SMS Text Message from the Command Line with this Bash / Terminal command you can use:. You can safely send ASCII information over SMS, provided you are encoding your characters to Binary PDU first. The script is very simple; it must. Thanks in advance. TextBelt is a very simple, outgoing SMS API that uses carrier-specific gateways to send messages. This function node takes the number provided by the form node and sets up the AT+CMGS command with the phone number. Sending an SMS from your Arduino. Is it possible to send SMSes to a specified port of a phone by using AT commands sent from my PC to a phone connected to the PC via USB?. One command per message. A unique identifier (ID) is returned in the response that may be used to query the status of the message that has been sent. Under the 'SMS' tab, you can list/view/delete all the stored SMS messages. For voice calls, the message text is read aloud by an awkwardly charming robot voice. Arduino, the most commonly used ones are Arduino Uno. Finally click on Send SMS button to send your SMS. Here is a short example of how to use the SMTP Mailer. The command should be followed by a carriage return :. AT+CMGS … ===== The mistake was that I was sending the commands to a different AT terminal (/dev/ttyACM0) when the SMS-sending application was using (/dev/ttyACM3). Using the HyperTerminal 3. Tutorial: Send SMS from your Arduino using an old Motorola cell phone Posted by Jeff Murchison on September 17, 2012 Sending text messages from your Arduino can be a bit of a hassle. All the settings are through SMS commands, please edit the below SMS commands in your cell phone, then send to the RTU5015 Unit. After some time I discovered that the character settings for writing SMS was set to 16bit unicode - where I expected it to be ASCII. So after I sent: AT+CMGF=1 AT+CSMS=1 AT+CSCS=\"GSM\" (SMS character set to normal 8bit text) Everything worked perfectly. That is pretty easy to send sms and call a phone using SIM800L GSM module. Many of you are not aware that you can send text messages to a cell phone from your email inbox.