... ainternet order 3. GPRS communication mode Customized Portable Wireless GPRS SMS Printers Hardware Instruction Pull to open ... 3 is ok;Then, press 4key 1 time, 4 is okThen, press 5key 1 time, 5 is ... input, press Delkey to delete the last number(4)Printer ID:Normally, set the SIM card number ... connection, must input APN, IP, Printer ID and Port.Settings for restaurant info:Reference to APN setting, ...