New leaked document revealed that Samsung is planning to upgrade several mid-range and low-cost smartphones including Galaxy S Advance. However, Galaxy S2 and Galaxy Note 1 are both excluded from future updates which points to the three reasons why Samsung won't do it anymore.

Update Window Period

According to Sam Mobile, Samsung may be planning to update several mid-range and low-cost Galaxy smartphones with Galaxy S Advance but the leaked document excluded former flagship devices - Galaxy S2 and Galaxy Note 1.

The primary reason why Samsung won't release any further updates is due to the 18-month window period strictly followed by manufacturers when scheduling software updates. Galaxy S2 was released in April 2011 while Galaxy Note 1 was out in the market by October 2011. If you are going to expect Android 4.4 KitKat next year, both Galaxy devices are expired for almost two-years to get another update.

Priority Lane

There is no denying that Samsung will prioritise devices in terms of release dates which make Galaxy S3 and Note 2 more eligible than the earlier generation. In addition, Galaxy S4 and Note 3 are firsthand getting Android 4.4 KitKat while other mid-range and low-cost smartphones are fresher compared to Galaxy S2 and Note 1. It is discriminative but Samsung follows protocol as well.

Incompatibility Issues

Android 4.4 KitKat firmware running the newest TouchWiz UI may cause incompatibility issues or major bugs to both Galaxy S2 and Galaxy Note 1. Recently, Android 4.3 Jelly Bean update for owners of Galaxy S3 in United Kingdom suffered major system issues such as huge battery drain, lock screen delays and more without any explanations why it happened.

Android 4.3 Jelly Bean update was suppose to bring major improvements and bug fixes that contrary to UK users. In the United States, the update of Android 4.3 for Galaxy S3 went well so far and didn't cause such uproar unlike its European counterpart.

Hopes for Android 4.4 KitKat

Whether compatible or not, the update window period blocks Galaxy S2 and Galaxy Note 1 from getting a major software upgrade and owners would likely spend their time on Android 4.1 Jelly Bean.

Users can either use custom ROM available online from various third-party developers in order to get newest features or simply purchase a newer Galaxy S or Galaxy Note devices to receive the privilege for an update.