It won't download anything
I've done something with the data. The phone does not download any apps.
Can you access the internet OK?
If not, go to Settings > Wireless and Networks > more > Mobile Networks > Data Connection and make sure that it is enabled.
If you can, have you tried updating the Google Play Store app?
Open the app, tap Settings, scroll down to Build Version, tap to enter. If there is an update option select it and allow it to update. Try to download an app and see if it works.
If it says it is already up to date, try the following:
From Main Menu on phone go to Settings > Apps > swipe left to All > scroll down to Google Play Store, tap to enter, tap clear data. Try to download an app.
Hopefully this may be of some help.
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