SOLUTION : AE GSM SIM900 NOT COMMUNICATING WITH ARDUINO | SIM 900 NOT MAKING CALL/ SMS

Click the following link to learn how the video was made: direct-link.ne... CALL NOT GOING, RECEIVING, NOT ABLE TO SEND SMS through any GSM of the WORLD!!!!! PROBLEM SoLvEd !!!!!
If you have a GSM module and it is in all right condition but still not making a call, receiving SMSs or sending SMSs then this VIDEO is for you only !!!!!!!

[@poojamadireddy3837]

Thank you this was an eye opener :’(

[@JimyFlips]

Subscribe ++ Share ++ Like

[@sumith_s_prince]

Hey Guy's! If your GSM Module is not working/calling/messaging then it's not the problem with gsm module,it's the problem with your sim usually JIO and VI sim doesn't support 3g 2g bands so it doesn't work. Even I was facing this issue but when I used "Airtel" sim in the module then it worked and was making call and msg..👍 hope you find it useful...try it

[@satavisha7605]

I have used Airtel sim still it's not working

[@pallakparmar4230]

It's very helpful . Thanks a lot

[@JimyFlips]

Glad it was helpful!

[@kaviyadurai9917]

My GSM module is not working. I have connected the pins as u suggested. But still it don't work. I think there might be a problem in my sim card, but it supports both 3g and 4g

[@JimyFlips]

Hi. Thanks for watching this video. As I have already mentioned in my video, you might have made an error in connecting the wires earlier. Once that connection error is made, the GSM blows off! Go, buy a new one and take care next time. Best, IAMDR7

[@lakshmanvengadesan9096]

Are you sure that it's gone when we connect RX to RX and TX and TX???

[@JimyFlips]

Yes. This happened with me. I destroyed 3 such GSM Modules by this holy mistake. If you have done so, you may use it as a bluetooth module also because such GSM modules have many features built in. Go and discover about those on the web! Best, IAMDR7

[@venkateswararasupalli7719]

can we use 4g sim for this project

[@muhammadm1237]

i have a problem that represented in fast d6 blinking

[@luxolombono7635]

Good video, I have a problem my GSM900 doesn't want to connect with my Simcard. I am using cell C it supports 2g/3g/4g. the netLight LED blinks continuously for 50 seconds then it goes off completely, what could be the problem?

[@JimyFlips]

Hi. Thanks for watching the video. As far as I know, SIM 900 does not support 4G SIM cards. You can check for that with the manufacturer. Maybe you could try to place another SIM card in that SIM 900. Or you could buy another SIM 900 module. And do make 100% sure that your carrier (C-cell) supports 2G/3G bands. And, as per my knowledge, SIM 900 work only for 2G bands, and carrier support for 2G band is becoming very-very less. As far as I know, carriers these days have stopped supporting those bands. Pls, do reach out if you need further assistance! Best, IAMDR7

[@luxolombono7635]

@@JimyFlips thank you so much for the response, I will definitely reach out if I have a problem again.

[@sohammitra1834]

hi for some reason my sms code shows inverted questionmarks on the srial monitor . how can i solve this .

[@JimyFlips]

Hello. First of all thank you for watching this video. It would be really good if you can type your code here on the comments section. No need to type the whole code, just type the part where msg function is involved. If you don't want to type any code, I can probably suggest tweaking the following: 1. Try to change font of serial monitor, because some characters can mean different things in different fonts. 2. Review your code line by line. Hope it helps! Best, IAMDR7

[@sohammitra1834]

@@JimyFlips void SendMessage() { mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode delay(1000); // Delay of 1000 milli seconds or 1 second mySerial.println("AT+CMGS=\"+91xxxxxxxxxx\" "); // Replace x with mobile number delay(1000); mySerial.println("I am SMS from GSM Module");// The SMS text you want to send delay(100); mySerial.println((char)26);// ASCII code of CTRL+Z delay(1000); } this is my code

[@SANYAAGARWAL-f2s]

change the baud rate in serial monitor

[@mdmarufahmed9323]

Really, then why it's working on my projects, yeah I've connected TX RX reverse, it still okay

[@JimyFlips]

You might be having a modded GSM unit. Thats why probably. Otherwise you must be having a good luck.

[@ritikazalke4822]

I didn't connect tx to tx and RX to Rx still I didn't get the message, even I tried it on another gsm module but still I didn't get the message can u plz tell why so

[@JimyFlips]

Hi. Thanks for reaching out! Just check if your SIM Card is 4G or 3G. A 4G sim usually does't work with the current versions of GSM modules. If you have a 3G "old" SIM, you are good to go with your GSM module. And, if its still not working then there must be some issues with the GSM Module itself. One more thing, even if you connected the wrong terminals once anytime, your GSM's life is over even though you connect it correctly the next time. Best, IAMDR7

[@keelanurnishanth5801]

i tried using several sim cards on the gms 900a module which i bought and the simcard that i have inserted doesnot connect to calls could it be because i am using a 4G simcard ? can anyone please answer?

[@JimyFlips]

Hello, thank you for watching my video. Answer: Yes, these 4G SIM cards are not supportable with the GSM SIM module - unfortunately. If you have a 3G/2G SIM, you are very lucky and fortunate enough to use it with your GSM module. You may hover over the internet to find how you could use a 4G SIM with a GSM Module (Arduino). Best of Luck! Stay Creative and Happy!! Best, IAMDR7

[@karandahiwale8770]

My gsm accepts call but not responding to commands

[@JimyFlips]

Hi! KD, how can u tell that it is accepting calls?

[@karandahiwale8770]

@@JimyFlips because when I power it on and call on the inserted sim card after 2 rings gsm answers the call

[@JimyFlips]

​@@karandahiwale8770 I mean it must be having some programming/linking with arduino if it answers the call... means it would be surely communicating with arduino... do u have it programmed/linked with arduino?

[@karandahiwale8770]

@@JimyFlips yes when I. Connect sim800 to. Same arduino it works and when I changed arduino to sim900 it accepts call but does not responds to at commands

[@JimyFlips]

@@karandahiwale8770 Sorry... but I may not be further helpful! Thanks for contacting me. But, one last thing, I have still not understood how can you be sure that GSM is accepting call?

[@guesswhoiam5746]

sss