iPhone是一款能不断给苹果公司（Apple）带来回头客的产品——至少在美国是如此。一旦顾客购买了一部iPhone，他们很可能会在两年之内，也就是手机话费合约到期的时候，再购买一部iPhone。

    iPad在某些方面类似一台大号的iPhone。iPad和iPhone这两款设备共享海量应用程序和许多使用模式，特别是在电子邮件、浏览网页以及玩游戏等方面（但观看视频方面并不相同）。

    然而，说到用户多久会以旧换新购买新型号产品，以及他们如何处置被淘汰的旧设备，iPad可能更像Mac电脑（通常2至4年更换一次），甚至是电视（5至10年更换一次）。

    这些发现出自美消费者调查研究机构——消费者情报研究合作伙伴公司（Consumer Intelligence Research Partners，CIRP）新近发布的一项报告。这个机构调查了2,000名在2013年购买了iPhone、iPad或Mac的美国消费者。它的调查发现如下（见下方图表）：

    • 更换：每十部丢失或损坏的iPhone中，有八部两天内即得到了更换。而当Mac或iPad损坏时，用户可能要一周后、甚至更长的时间才会更换。

    • 循环利用：iPad用户将自己的旧设备送给朋友或家人的比例比iPhone用户高出一倍多。

    • 首次购买者：iPhone买家中，只有1-2％的人是首次购买者。相比之下，iPad买家中，首次购买者的比例在2013年12月为78％，仅略低于2013年3月的84％。

    CIRP在报告中写道：“我们认为，苹果会希望iPad变成大号iPhone。不过，根据我们近期获得的用户使用模式的数据，我们怀疑iPhone更像是Mac、电视机或是iPod等更换不太频繁的产品。”

    更多CIRP图表见下方：

    For Apple (AAPL), the iPhone is a sale that keeps on giving -- at least in the U.S. Once a customer has bought one, he or she is likely to come back for another, usually within two years, when that contract expires.

    The iPad is a like a big iPhone in some respects. The two devices share a huge library of apps and many usage patterns, particularly in terms of e-mail, Web surfing and game-playing (but not video watching).

    In terms of how often they are traded in for a new model, however, and what happens to the old, they may be more like Macs (which tend to get replaced every 2-4 years) or, worse still, TVs (5-10 years).

    These findings come from a new report by Consumer Intelligence Research Partners, which surveyed 2,000 U.S. customers who purchased an iPhone, iPad or Mac in 2013.

    Among its findings (see charts below):

    • Replacement: Eight out of ten lost or broken iPhones are replaced within two days. Owners of a broken Mac or iPad may not get to it for a week or more.

    • Recycling: iPad owners are more than twice as likely as iPhone owners to give their old tablets to a friend or family member.

    • First-time buyers: Only 1-2% of iPhone buyers purchase their very first phone. By contrast, the percentage of first-time iPad buyers was 78% in December 2013, down only slightly from 84% in March 2013.

    "We think Apple would prefer the iPad become a big iPhone," the report concludes. "We suspect, though, based on recent CIRP data about how buyers use them, that it's as much like a Mac, TV, or iPod, with less frequent replacement."

    More CIRP charts: