GSM GPRS CDMA HSPA modules refer to different types of communication modules used in IoT and embedded devices to provide cellular connectivity.GSM (Global System for Mobile Communications) modules operate on the GSM cellular network which is the most pervasive 2G network globally.They provide voice calls and SMS text messaging.GPRS (General Packet Radio Service) modules are an upgrade to GSM and provide mobile data connectivity using the GSM network.Speeds are typically around 100 kbps.CDMA (Code Division Multiple Access) modules operate on CDMA networks such as cdmaOne and cdma2000, mainly used in the Americas and Asia, this provides voice, text and higher speed 3G data.
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