Update 1: September 8 – Verizon US
Samsung Galaxy Watch 4 and Galaxy Watch 4 Classic models are getting the Wear OS 3.5-based One UI Watch 4.5 update at Verizon US. Identified via the built version ending with GVH2, the update brings a bunch of new features, major UI changes, new and improved watch faces, and much more.
To download and install the stable One UI Watch 4.5 update, open the Galaxy Wearable app on your connected Android smartphone. Now go to the Watch settings >> Watch software update option. If your watch displays a Home tab, swipe to and tap Watch software update. Finally, tap the Download and install option to start downloading the update.
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ORIGINAL ARTICLE: September 5 – Global release
Samsung Galaxy Watch 4 and Galaxy Watch 4 Classic models have finally started collecting the Wear OS 3.5-based One UI Watch 4.5 update publically. This update installs a bunch of new features, improvements, and the latest security patch.
Samsung is releasing the Galaxy Watch 4 One UI Watch 4.5 update with the One UI build version ending with GVH1. You will be able to install it by downloading a package of around 875MB.
Galaxy Watch 4 One UI Watch 4.5:
One of the most noticeable features that One UI Watch 4.5 brings is the support for a full QWERTY keyboard to Samsung keyboard that will let you send or reply to text messages with more ease.
There are new accessibility options including auxiliary features for improving visibility, Left and right sound balance feature for hearing aids, and Touch and hold delay settings feature to fix interaction and dexterity.
Other than these, the latest major update brings the Quick commands feature which groups and runs multiple actions in one command, 6 new colorful watch faces that you can mark favorites as well, and a Camera controller feature that allows you to switch between photo and video shooting mode.
In addition, the watches now support GIF animation playback on Samsung messages, dual SIM cards, large sizes for font size settings, and many other advanced features.