Even though there are still a lot of Samsung smartphone owners still waiting to receive the Android 5.1.1 update, everyone is already thinking about the Marshmallow update. Without a doubt, the South Koreans will make the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 available for download, but we are wondering when will this moment arrive. We might be able to estimate the update's release date based on the company's previous software launches.

Most sources in the industry claim that Google will release the final code of Android 6.0 Marshmallow update by the end of September. As usual, the final Android 6.0 Marshmallow version will be released synchronized with new Nexus smartphones and it will be offered as a OTA update for select Nexus devices. Soon after the first Nexus phones and tablets receive the update, Android OEMs should as well start pushing the new firmware to their terminals.

Last year, Samsung begun pushing the Lollipop update to the first devices in December. This year, we are expecting the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 to hit the first terminals around the same date. Anyway, there are some voices saying that, because the Marshmallow update is not as major as Lollipop, Samsung might release the new firmware even sooner, sometime late November.

Just like any other software update, the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 will be pushed to users in gradually, with the ETA varying based on region, phone model, and carrier. As usual, the update will be released both over-the-air and via KIES. When the new firmware is ready to hit your device you should be able to see a message in the notifications bar informing you that a new update is pending. Tap on the notification, them follow the instructions on the screen. You can also check for the update manually under Settings > About phone > Software updates > Check for software updates or via KIES after you connect your smartphone to the PC using the USB data cable.

It's also worth mentioning that the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 will also be released for other variants of the aforementioned devices. Therefore, if you happen to own a Galaxy S6 Edge or a Galaxy S6 Edge Plus here that your device will also get updated.

You should also know that only the Samsung phones running an official Android build are eligible to receive the update over-the-air or via KIES. If you are coming from a custom ROM or you have altered your OS in any way then you would have flash the update yourself using the ODIN tool.

As I was mentioning above, the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 is not as big as the jump from KitKat to Lollipop, but there are still some notable changes. One of the biggest improvements is the new apps permissions system. Apps are now asking for permissions only when they need to use them, instead of asking you to accept all the permissions at installation. You can also turn permissions on and off from the Settings menu.

Marshmallow also promises improved battery life courtesy of the new Doze mode. While in Doze mode, apps have limited sync and network access, while being in a deep sleep state. However, notifications are still permitted if a "high priority Google Cloud Messaging tickle" is received.

Android 6.0 Marshmallow will also introduce Google Now On Tap which is capable of giving the user contextual information within apps. Google Now On Tap is allowed to read content within apps so it can provide relevant results based on what's on the screen. For example, if you are having a conversation in Hangouts about a movie, Google Now On Tap will give you details about that particular movie such as release date, IMDB ratings, cast, etc.

The Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 should also arrive with Deep Linking and native fingerprint reader support. Samsung's high-end phones already come with fingerprint lock screen security or Samsung Pay sign-in, but in Marshmallow the fingerprint sensors can be used for other authentications, too. On the other hand, Deep Linking allows your device to know what apps to use to open a certain type of link.

Android 6.0 also introduces automatic app data backup and restore, so you will be able to back up your game saves or app settings to Google Drive. The backup is made every 24 hours and is limited to 25 MB per app. It's also worth adding that in Android Marshmallow you will be able to use SD cards as default storage. You should also notice improvements for the Storage Manager, now allowing you to sort files and folders by size and even select and delete them. The RAM Manager got updated, as well, now showing how much RAM an app eats on average and the maximum RAM it used so far.

The update will also bring a slightly revised Phone Dialer with a much simpler and more intuitive interface. I should also mention that you can now select multiple contacts in the Contacts app and you can merge them, delete, or share them at once. You also have the ability to disable heads-up notifications on a per-app basis or you can disable them system-wide.

Aside the aforementioned improvements and changes, the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4 will also bring updated Samsung native apps. Samsung's pre-loaded apps will be updated with granular app permissions and slightly tweaked UI.

What are your expectations for the Android 6.0 Marshmallow update for Samsung Galaxy S6, Galaxy Note 5, Galaxy S5, and Galaxy Note 4? Is your Samsung device currently running the latest official Android firmware? Please let us know in the comments section below.

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