SpookDroid
Ambassador
And that is just how SIM cards work. One number, one SIM. Done. The only way you can get the same phone number for calls and/or texts in different devices is if your number isn't tied to the carrier and instead uses a virtual one (like Google Voice). This doesn't tie directly with the phone, usually, and needs an additional app for it to work on different devices. But for instance, if you do have a Google Voice number, you can get your calls and texts on a device with the Voice app installed (and logged into your Google account, of course) or even a web browser.
T-Mobile does something similar with DIGITS (not a lot of devices are supported, however, and their web interface can be buggy). Verizon does it for messaging with Messages+ (not sure if that supports calls, haven't been on Verizon for a while).
T-Mobile does something similar with DIGITS (not a lot of devices are supported, however, and their web interface can be buggy). Verizon does it for messaging with Messages+ (not sure if that supports calls, haven't been on Verizon for a while).