I think 9.3.4 is not just a jailbreak fix update ! There is something serious here ! I think it is a huge flaw in security and resource (maybe RAM or ROM Read Write ) management. Apple could just fix that jailbreak issue without using Pangu's name. Apple just wanted to delude everyone that this update is just a jailbreak fix. But after you look to the big picture and consider the average updates release pace you will find it a sudden and suspicious move, as if there was a serious bug which existed in IOS 9 since day one and they found it and in hurry to fix this vital issue.
Performance is better now on my 4s because it is an old device. But I don't think newer generation devices will achieve a noticeable improvement with 9.3.4 compared to 9.3.3.
Performance is better now on my 4s because it is an old device. But I don't think newer generation devices will achieve a noticeable improvement with 9.3.4 compared to 9.3.3.