... which accept ainternet order 3. GPRS communication mode Customized Portable Wireless GPRS SMS Printers Hardware Instruction Pull to open the cover, and change the ... Settings for GPRS connection:(1) GPRS APN:1. In the sub-menu, press Up or Down key to move the cursor to GPRS APN, then ... , press Back key to save and exitNow, GPRS Port is 23450.1. In the sub-menu, move the cursor to GPRS Port, then press ...