16 January 2020
Sony has officially started rolling out the stable Android 10 update for Xperia 1 and Xperia 5 users worldwide. The release is in line with the promise it made last month when it unveiled the update roadmap for eligible Xperia devices. It has six other smartphones lined up which should get updated within the first half of 2020.
As shared by different Reddit users, the Xperia 1 Android 10 update bears the firmware number 55.1.A.0.748 and weighs 725.7 MB in download size. It is recommended that you connect to a WiFi network for tapping the download button, especially if you are on a limited mobile internet plan. Sony has specifically mentioned that once you install the new software update, you will not be able to revert to the previous version. This is something you should keep in mind for sure.
It should be noted that at least one user has posted on Reddit that he is unable to make or receive any phone calls or use cellular data after the update installation. He added that his phone is unable to detect the SIM card and he is relying only on the WiFi connectivity for communication purposes. This is the reason we would suggest you be patient for the time being and wait until Sony fixes the issue.
An official changelog of the update has not been released yet. We can expect it to be packed with all the major and new Android 10 features. It is quite possible that Sony might have made some tweaks and improvements to its own user interface for better user experience. The only thing that is confirmed is that it comes with the November 2019 security patch.