手机公交卡？你的城市支持吗？京津冀卡和普通卡又有什区别？
这年头，越来越多的智能手机支持nfc功能了，nfc作为近距离无线通讯技术，使用的场景非常多，比如模拟工卡、门禁，充当银行卡，刷公交，地铁等等。
用手机来刷公交，坐地铁，已经成为越来越多人的选择，但是由于各家手机厂商对于nfc功能的开发策略以及第三方合作各不相同，导致虽然你的手机有了nfc，可以充当公交卡，但是你所在的城市却不支持的情况。
那么你的手机是否支持开通所在城市的公交卡呢？
先来看看小米吧。
小米作为最早支持nfc的手机厂商，一直在自家的旗舰手机上搭配了nfc功能，目前小米nfc公交卡支持167座城市的开通，包括了北上广深这样的大城市，各省份的大部分地级市等，涵盖的范围可谓非常广。
这里要额外提到京津冀互联互卡通，光从字面上看，大部分人可能以为这卡只只支持北京，天津，河北的公交系统，但其实这是一张名副其实的“全国一卡通”，除了京津冀，这张卡支持全国范围内具有“交通联合”标识的公交系统城市，许多省份几乎是全省范围内都可以使用，比如河南省，江苏省，吉林省，福建省等等，预计在今年年底，将有220个城市（含京津冀13个城市）可以用手机开通京津冀互联互通卡，用手机坐公交。
目前华为带有nfc功能手机同样支持160+的城市开通手机公交。具体城市如下：
苹果是最早搭载nfc功能的手机品牌，早在iPhone6的时候就支持nfc了，但却迟迟没有开放接口，千呼万唤之下，今年终于支持开通手机公交卡，但仅仅只支持北京和上海两座大城市，并且不是全功能nfc，也无法给实体卡充值，比较局限。
这里说回京津冀互联互通卡，虽然这张卡支持的范围非常广，可以方便不同城市的居民出行，避免每到一个城市需要重新开通一张卡，但也有其局限性：缺少优惠。打个比方，在某城市坐某趟公交花费2元，当地的卡可能会有半价优惠，但使用京津冀卡，就会按照原价扣钱。所以如果你不是经常跨城市出差的话，还是老老实实开通当地的手机公交卡吧。
现在越来越多的人抛弃了传统的卡片式公交卡，转而使用手机刷卡出行，这样方便的nfc公交卡，你开通了没？
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