Internet connection: To process a payment, the Zettle app connects to its servers using your mobile device’s WiFi, 3G or 4G connection. In the past, we’ve seen reports from users that they’ve had no problems using slower connections such as EDGE, so it appears the system is robust enough to work even on weak connections.
Mobile devices: In addition to the card reader and payment app, you’ll need a compatible iPhone, Android smartphone, iPad or Android tablet. We have noticed that Zettle tends to release new features in the iOS app for Apple devices first. For example, it took some time before the Android app began supporting contactless payments, but new features seem to find their way to both apps eventually.
Battery: The card reader is charged with a micro USB cable. It will automatically go into sleep mode when not in use, and the battery therefore lasts longer than older models that received complaints about short battery life. Battery life is on average 8 hours with a transaction every 5 minutes, or 250+ transactions from one charge.
Businesses selling from a fixed location would want to use the card reader with a Dock (for Zettle Reader) or Dock 2 (for Zettle Reader 2) – a small stand with an inbuilt charger. Placed in the dock, the card reader is automatically charged. The Dock 2 for Zettle Reader 2 is more stable than the old one which some users say is a bit flimsy.