I am experiencing a problem with Google Play in my Android phone. When I download new apps from the Play Store, it completes 100% and then shows me an error:
(unknown Error code during application install:''919'')
I was getting the same thing when updating apps. Tried over wifi and service provider network same thing was not with just one app all apps that were set to up date even google apps. I cleared the cache and it seems to be working fine now settings/app manager/googleplaystore/clear cache
I Know its already answered but this answer may help to fix it and help someone. source link
Check your phone memory, how much is free. You can transfer your apps to sd card through ‘apps2sd/app manager’ (free). Clear your cache and data now. For this, follow these steps:
If your problem isn’t solved by using method 1, try using a different internet connection than you’ve used previously. It means, if you are using your mobile data to download and install or update the apps, you can try using your wi-fi network, or vice-versa. This method is reported to work in most of the devices by the users.
Change your APN (access point name) settings:
The method 1 is the most commonly used, and you can try it first and in case it doesn’t work, you can try those which are given underneath.