I have a sim800L device connected directly to a serial bus on my computer. Via putty I can see I am connected to Tmobile and am in registered roaming mode (1,5). I can use another phone to send a sms to my hologram number and it will show up in the putty terminal. Even if i set the parameters (listed below) I cannot send sms messages. Any troubleshooting tips would be greatly appreciated.
I never get the sms on my phone.