Update Your App
To experience the best performance and to access new features from Square, download the latest version of the Square Point of Sale app.
Mobile PIN Certification Requirements
For security reasons, and to ensure PCI compliance, Square will no longer process chip and PIN card or contactless payments on devices running versions of the Square app that are older than 90 days. This change will take effect on 26 March 2019.
Update the 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.
You’ll need your iTunes password in order to upgrade any app. If you forgot it, you can reset your iTunes password.
Note: You may be prompted to connect your device to Wi-Fi to complete the update.
Update the App on an Android Device
Open Google Play.)
Tap My apps and games.
Locate and tap the Square app.
Note: If you’re unable to download the Square app, your device may not be supported. Check to see if your device meets the required specifications for compatibility with Square.