2 question for help | Microcontroller › Arduino › 2 question for help This topic has 1 reply, 2 voices, and was last updated 6 years ago by Hari Prasaath K. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts March 2, 2016 at 11:35 am #4335 robaParticipant Hi all, i have 2 question i am using sim900 with At commands one question is does the AT+CSQ effects the GSM/GPRS signal or only the network strength signal? second question when i use AT+CGREG sometimes i get answer of AT+CGREG 0.0 which means that i cant get a GSM signal. But if i use instead using AT+CGREG i use AT+CGATT and then i get A gprs and it works fine , is there any difference ? Thanks. September 5, 2018 at 4:55 pm #14900 Hari Prasaath KParticipant The two commands has different properties AT+CGREG returns the registration details of the device and the command and the command AT+CGATT is used to attach or detach the device to the pocket domain services. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In