I've the same problem sometimes the function gsmAccess.begin(PINNUMBER, true)==GSM_READY hangs my process
indefinitely !
I try to put the begin() function in asynchronous mode by gsmAccess.begin(PINNUMBER, true, false) ==GSM_READY but i can't connect ever when in the same place with synchronous mode i had no problem .
How can i solve this issue ?
Thanks in Advance
** I read the posts before but i don't understand how reset the board when the hangs happens !