Our most frequently asked questions can be found here.
Error 2 – Handset memory capacity exceeded.
Handset has run out of free memory to store new message.
What does DLR mean?
DLR is short for Delivery Report. This is the receipt you get for each SMS sent. It will contain a...
Error 5 – Unknown subscriber.
The IMSI is unknown in the HLR. The HLR responded to the SRI for SM request with an error indicating...
Error 1 – Absent subscriber
When a subscriber is paged in an attempt to deliver a call or SMS and the subscriber does not reply...
What is concatenated SMS?
In the cellular phone industry, mobile phones and their networks sometimes support concatenated short message service (or concatenated SMS) to...