Smartphones! because mobile apps go on smartphones
Answer:
The Correct Software
Explanation:
Some mail application have built in support to view the attachment like in a phone. While others don't, so if that is the case your device will attempt to open the file according to its extension (.exe, .txt, .js etc.) If your device doesn't have the correct software to open it, then the other things don't matter.
Answer:
Mobile are build in a specific platform such as Android, iOS ect and they use application such as apple store and have access to the system such as GPS and the camera. Mobile apps live and run on mobiles as on they are their own thing controlled by a developer on the other end
Explanation: