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SumUp 3G Printer: Manual · First, use the arrows on your 3G to scroll to “Device settings” in the menu. Then select “Printer”. · Scroll to “Sales history” with SumUp 3G Card Reader - User Manual · Turn on the device by pressing the power button. · Select the language for your device. · Log in with the account and password SumUp 3G Printer: Manual. The SumUp 3G printer is a mobile all-in-one printer, charging station and cradle for your 3G Card Reader. SumUp 3G: Manual. Get to know your 3G Card Reader. From features to general operating tips, the manual below offers a comprehensive look at our reader. User manual. For new customers: I. Set up the Air Card Reader. 1. Open the SumUp App and login using your email address and password. Say hello to the ultimate payments duo. Charge, tap, print with the SumUp 3G Card Reader and Printer bundle. The SumUp 3G comes with a built-in 3G SIM card,How to set up my 3G Card Reader · Make sure that you have completed your registration. · Turn on the device by pressing the power button. · Select your preferred