如何得到电话号码的Android手机？ [英] How to get phone number android phone?
问题描述
我尝试使用 getLine1Number（）来得到android手机号码，但它返回null。也有时我需要使用另一个SIM卡，并得到其编号。
I try to get phone number using getLine1Number() in android,but it returns null . Also sometimes I need to use another sim and get its number.
如何始终获得电话号码吗？
How to always get phone number ?
推荐答案
在GSM网络，基本上你不能！的电话号码仅由网络而不是由电话或SIM知道
On GSM network, basically you can't! The phone number is only know by the Network and not by the phone or the SIM.
这是运营商网络中谁是IMEI SIM卡号码与有效的手机关联起来。这就是为什么可以实现携号转网的理由：你可以有不同的IMEI用同一个电话号码，或者你可以有改变后的电话号码，IMEI一个
It's the operators network who associate the IMEI SIM number with a valid cell phone. And that's the reason why number portability can be achieved: you can have a different IMEI with the same phone number, or you can have an IMEI with a phone number that changes later on.
您可以发送短信到特定的服务，如果你真的想知道的话，或者直接问到最终用户。
You can send an SMS to a specific service if you really want to know it, or ask directly to the end user.
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