... Y, Z, 9* key: special symbol0 key:space, 0# key: switch between letters and numbersDel: delete the last letter or ... card)2. Install GSM antenna3. Connect power adapter4. Switch on GPRS Printer begins to initialize… It will take ... 1 time, 1 is okThen, press 0key 1 time1, 0 is okThen, press 0key 1 time, 0is ok4. ... time, 5 is okThen, press 0key 1 time1, 0 is ok4. Press Back key to save the settings ...