Update Your App
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To experience the best performance and access new features from Square, download the latest version of the Square POS app.
Note: To ensure security and PCI compliance, Square can't process chip and PIN card or contactless payments on devices running versions of the Square app that are older than 90 days.
Update the POS App on an iOS Device
Download the latest version or update from the App Store on your mobile device using the following steps:
Open the App Store > tap your profile icon.
Scroll down to see pending updates.
Tap Update All to update all apps on your device, or locate the Square app and tap Update.
You’ll need your iTunes password in order to upgrade any app. If you forgot it, you can reset your iTunes password with Apple.
Note: You may be prompted to connect your device to Wi-Fi to complete the update.
Update the App on an Android Device
To update on an Android device using Google Play:
Open the Google Play app > tap My games and apps.
Locate and tap the Square POS app > Update.
Note: If you’re unable to download the Square POS app, your device may not be supported.