Owners of the HTC One M8 phone on AT&T should be on the lookout for a shot of Android Lollipop as of Tuesday.
A Monday night tweet from HTC vice president of product management Mo Versi said that the latest version of Google's mobile OS is finally launching for the HTC One M8: "AT&T HTC One (M8) Owners! We just received technical approval for Lollipop OS! Thank you for all your patience, OTA (over-the-air) [update] to start tomorrow."
Android OS rollouts via carriers can be challenging and time-consuming, especially if technical bugs are discovered. Both the manufacturer and the carrier need to test and verify the update before it can be approved for smartphone users. The update then needs to be scheduled by the carrier and rolled out country by country or on a global basis for each individual phone.
Technical issues have plagued the rollout ofto the . In late January, HTC revealed that it would miss its February 1 goal of pushing out Android Lollipop to the . At the time, HTC had already doled out the update to the Google Play, Developer and unlocked editions of the HTC One M8, which don't rely on carrier partners, such as AT&T.
Via a blog post in January, Motorola detailed the, explaining why it often takes so long. The delay in launching a new Android OS is a major contributor toward Android fragmentation, which leads to older versions of the OS still resting on different phones and tablets for years.
The One M8 is HTC's earlier flagship phone. Last month, the company released its latest, the HTC One M9, which will be contending with Samsung's Galaxy S6 and Apple's iPhone 6 lines.
AT&T did not immediately respond to CNET's request for comment.