Actually a question on SIM800L.
How to learn number next unread ?
I so understand a unique variant - simply to be transited on all possible range of numbers and to read sms command "AT+CMGR xxx, 0" from 1 to ... And how many they can be?
Still it is possible to listen uart, but it is not my case, here a little differently logic in the code, and it is unreliable. Suddenly I will send the message and I will pass during this moment the notification message?