AT command for GSM module

[shadowranger94]

Hello guys. Happy new year!!! I am back. Recently bought a GSM module 7600E. Was wondering if anyone knows how to send more than 160 characters with AT command for SMS. Seems like if I send more than 160 characters within the message I couldn’t send.

 

[davidktw]

https://en.wikipedia.org/wiki/Concatenated_SMS

 

[shadowranger94]

thanks @davidktw , u know what’s the difference between postpaid card and prepaid card? Seems like my gsm module only accepts postpaid card.

 

[davidktw]

Postpaid and Prepaid are the service plan type, former is paid monthly subscription that most of us use. Prepaid is those you pay upfront with credits allocated to the plan, much like your ez-link card.

I don’t think your gsm module is differentiating based on post/prepaid, but rather the gsm sim card type. Check if your gsm module accept specific gsm card type