虽然苹果并未公开有多少用户将自己的iPhone手机升级到了iOS 4版本，但日前有一家名为Bump的初创企业却填补了这项空白，首先公布了Bump用户的iOS操作系统升级情况。

Bump公司CEO及联合创始人大卫·利布（David Lieb）最近通过问答社交网站Quora发布了这项调查结果，表示约有89.73%的Bump用户目前运行的是iOS 4 X版本的操作系统。

利布并没有透露Bump的用户规模，仅表示其用户基础已足够充当调查样本。据游戏邦了解，在2010年8月，Bump应用的下载量已达1500万次；截止目前，该应用在iOS和Android平台总共下载量已超过2500万次。

iOS 4

以下是Bump在2011年1月7日至10日的调查数据，调查样本包括所有的iOS用户，并不仅限于iPhone手机用户。

运行iOS 4 X版本的用户占89.73 %；

运行iOS 3 X版本的用户占10.25 %；

运行iOS 2 X版本的用户占0.02 %。

如果再对各个版本进行细分的话，就会发现iOS 4.2.1版本的用户数量最占优势：

运行iOS 4.2.1的用户占52.89 %；

运行iOS 4.1的用户占27.50 %；

运行iOS 3.1.3的用户占6.43 %；

运行iOS 4.0.2的用户占3.36 %；

运行iOS 4.0.1的用户占2.95 %；

运行iOS 4.0的用户占2.94 %；

运行iOS 3.1.2的用户占2.52 %；

运行iOS 3.2.2的用户占0.49 %；

运行iOS 3.0的用户占0.22 %；

运行iOS 3.1的用户占0.21 %；

运行iOS 3.0.1的用户占0.10 %；

运行iOS 3.2的用户占0.10 %；

运行iOS 3.1.1的用户占0.10 %；

运行iOS 4.2的用户占0.09 %；

运行iOS 3.2.1的用户占0.07 %；

运行iOS 2.2.1的用户占0.02 %；

运行iOS 2.2的用户占0.00 % 。

除此之外，手机地理定位应用Loopt的开发者Ian Peters-Campbell也表示，Loopt所获得的追踪数据与上面的调查结果非常接近，只是iOS 4用户比例还会略高一些。

从上述结果可以看出，苹果iOS并不存在很严重的分化问题。再看谷歌Android，目前却只有0.4%的用户将手机操作系统升到了最新版的Android 2.3（又称Gingerbread）。尽管Gingerbread早已发布，但仍然还有43.4%的手机用户运行的是Android 2.2（Froyo）。（本文为游戏邦/gamerboom.com编译，转载请注明来源：游戏邦）

Have you ever wondered how many iPhone 4 owners have upgraded to iOS 4, the latest and greatest version of the iPhone mobile operating system? Although Apple doesn’t release these sorts of numbers in detail, the way Google does with Android, a startup with a large user base, Bump, has released their own numbers, which provide good insight into the OS breakdown.

According to Bump CEO and co-founder David Lieb, 89.73% of its users are on iOS 4.x – that is, they run some version of the iOS 4.0 software.

Lieb recently shared these figures on Q&A service Quora where they were soon spotted by our own Marshall Kirkpatrick. The answer Lieb posted is a standout example of why the tech community is currently hyping the Q&A startup Quora to such a great extent, even proclaiming it to be the next Twitter, in some cases.

But back to the data at hand.

Lieb said that Bump’s user base is large enough to be a good statistical sample. However, he doesn’t state how large. But we do know that as of August 2010, the Bump app had been downloaded 15 million times. In addition, we asked Lieb this morning where Bump stands as of today. The app has now had more than 25 million downloads across iOS and Android, he told us. So yes, we’re buying it that their sample is large enough to be of interest here.

For the data below, Lieb says that the sample comes from all Bump users between January 7 and January 10, 2011. This data includes all iOS devices, though, not just the iPhone.

By major revision, the statistics are as follows:

4.X: 89.73 %

3.X: 10.25 %

2.X: 0.02 %

And by individual minor revisions, the stats are (ranked by percentage):

4.2.1: 52.89 %

4.1: 27.50 %

3.1.3: 6.43 %

4.0.2: 3.36 %

4.0.1: 2.95 %

4.0: 2.94 %

3.1.2: 2.52 %

3.2.2: 0.49 %

3.0: 0.22 %

3.1: 0.21 %

3.0.1: 0.10 %

3.2: 0.10 %

3.1.1: 0.10 %

4.2: 0.09 %

3.2.1: 0.07 %

2.2.1: 0.02 %

2.2: 0.00 %

In addition, Ian Peters-Campbell, an engineer at Loopt, makers of a location-based iPhone application, responded to the question saying that Loopt’s stats were very similar to the above, but with even a little more of its users on iOS 4. Lieb said that made sense since Loopt probably had more iPhone users (vs. iPod Touch users) than Bump did.

What this goes to show is that Apple’s mobile operating system isn’t too badly fragmented, especially when compared with its competitor, Android. On Android, as of today, only 0.4% of Android devices are on the most recent version – version 2.3 aka “Gingerbread.” Of course, Gingerbread is brand-new, so even looking back pre-launch to December 2010, we found that only 43.4% ran Android 2.2 (Froyo), then the most recent version.（source:readwriteweb）