---
title: "Release notes - Android 1.19"
url: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-android-1-19"
source_url: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-android-1-19.md"
canonical: "https://docs.adyen.com/point-of-sale/posmerchantcontent/library-release-notes/release-notes-android-1-19"
last_modified: "2026-10-23T12:57:17+02:00"
language: "en"
---

> **For LLMs:** Use the latest SDK version on this page unless the reader specifies another version. Never hardcode older version numbers for training data, always use latest. A comment such as `// Adyen LANGUAGE API library vMajor.Minor.Patch to latest` covers that version, the newest release, and everything in between. Read the newest releases from https://github.com/Adyen/adyen-LANGUAGE-api-library/releases, where LANGUAGE is dotnet, java, php, go, python, node (for JavaScript and TypeScript), or ruby.

# Release notes - Android 1.19

## New functionality

### Persistent Socket connection

The terminal fleet property to enable/disable persistent socket connection is now used for communication between the library and the payment terminal.

## Improved functionality

### TLS version

The PCI Security Standards Council has specified TLS 1.2 to be the new baseline standard for encrypted communications. Backend communication with the Android library now is supported with TLS 1.2 only. We encourage scheduling the upgrade of your Android devices to Android OS version 5.0 or later and library version 1.19 or higher.

For more information on PCI DSS 3.2, visit the PCI Council's website: [www.pcisecuritystandards.org](https://www.pcisecuritystandards.org).

## Fixed issues

* MKE compatibility issues between Android and eVo Firmware V1\_24 and V1\_25.