Samsung has yet to release an Android 4.4 KitKat update for many of its devices that should be compatible with Google’s latest mobile operating system version, but SamMobile has obtained a leaked internal document that lists the KitKat rollout schedule for some Samsung smartphones. Interestingly, the document reveals that the international version of the Galaxy S3 (GT-I9300 model) will not get KitKat anytime soon, as Samsung is experiencing problems – the Sprint Galaxy S3 model has already been upgraded to KitKat though, with other LTE versions of the phone supposed to get it this month.

The Galaxy Note 2 LTE model will also be updated to KitKat in May, followed by the Galaxy S4 Mini, Galaxy 4 Mini LTE, Galaxy Note 3 Neo, Galaxy Grand 2, Galaxy Mega 5.8 and Galaxy Mega 6.3 in June.

As for the GT-I9300, Samsung’s documentation says that the phone’s update has been canceled due to “unsolved problems.” According to a different screenshot sent in by the same tipster, the international Galaxy S3 model may have a TouchWiz problem, “which is stopping the device from loading system apps,” rather than a RAM problem – the GT-I9300 only has 1GB of RAM, while the U.S. models come with 2GB of RAM.

Screenshots of the leaked internal Samsung documents follow below.