Mobile network O2 has decided against releasing Sony's Android 4.0 update for a few of its older models, claiming it found the code wasn't performing particularly well on a handful of phones.
In a blog post on the matter, O2 says it's been testing a version of Sony's update to Android 4.0 for the Xperia Arc, Xperia Ray and Xperia Neo, and has come to the conclusion that it makes the phones slower and less reliable, so the update's been rejected and won't be released.
O2 said: "Our testing found that the software update affected the phone’s speed and performance. These issues were present on three separate versions of the Android 4.0 software we tested and are caused by the software having more advanced hardware requirements than previous versions."
So owners of the original Arc, Neo and Ray who bought their phones through O2 will be staying on Android 2.3. Unless they go down the rooting/custom OS route, of course. [O2 via Android Central -- Thanks Udimon]