Only in [Unlocked/a lot of money] fashion: you can buy even if you don't have enough money.
Free play does not work!
The role of the emergency dispatcher
In 911 OPERATOR for Android you take on the role of an emergency dispatcher help, which must quickly process incoming calls. Your job is not only to handle calls, but also to respond appropriately to the situation - sometimes providing first aid instructions is enough, other times the intervention of the police, fire department or paramedics is a necessity. Keep in mind that the person on the other side of the line could be the father of a dying daughter, an unpredictable terrorist, or just a joker. Can you handle it all?
After the download is complete, the downloaded file will be displayed in the notification shade (top), and will also be located in the "Download" folder (any file manager )
Install the downloaded APK file using any file manager or by clicking on it (on the downloaded file) in the notification shade
If you are installing apps for the first time not from Google Play (but using a file manager or browser), you will need to grant the appropriate permission. This is done only once.
If the file was downloaded with the bin extension, then there are 2 options:
Change the extension of the downloaded file to apk using any file manager ("rename" function)
To update the application, install the new version of the application over (without deleting) the old one.
This update will only be possible if the previous version of the application is downloaded from us. Otherwise, there will be a signature conflict and you will see the message "Application not installed".
For what "Signatures" are and what they are for, read here.