Thanks to its next software update, the ageing Watch GT 2 will soon support even more third-party apps. The same update also brings new health and fitness features to the former flagship smartwatch. By contrast, the Watch 3 and Watch 3 Pro now support more SMS quick replies with their new updates.
https://www.notebookcheck.net/Huawei-Watch-GT-2-and-Huawei-Watch-3-series-receive-new-features-via-their-latest-software-updates.586276.0.html