The smartphone was launched last year with Android 10 OS. So, Android 11 is the first major OS upgrade for the device. The update is rolling out with software version M015GXXU3BUD9. As expected, the OTA update also brings April 2021 security patch that fixes 30 CVE’s (Common Vulnerabilities and Exposures) from Google and 21 CVE’s from Samsung. The update should bring features like Chat bubbles, a refreshed user interface, permission auto reset, a conversation section in the notifications area, improved media controls, the ability to remove locations in the images, new widgets, and more. If you’re a Galaxy M01 user and have not received the Android 11 update yet, then manually check for the update by heading to Settings » Software updates. [source]