Android Mobile Download was unsuccessful' error: Play Store Solution

Related errors from goo.gl/PT37PN Play Store:
'Download was unsuccessful.'
'Download was unsuccessful. Please try again.'
Cannot download applications from the Play Store
goo.gl/PT37PN
If you receive this error message when trying to download an application or update from Play Store, follow these steps goo.gl/PT37PN

1. Clear the cache of the Play Store application and download manager

1. From the Home screen, press the Menu key.
2. Touch Settings. goo.gl/PT37PN
3. Touch Applications.
4. Touch Manage applications.
5. At the top of the screen, touch the All tab.
6. Scroll to and touch Download Manager.
7. Touch the Clear data button. goo.gl/PT37PN
8. If prompted, touch OK on the warning that all the saved information will be deleted.
9. Press the Back key. goo.gl/PT37PN
10. Scroll to and touch Market. goo.gl/PT37PN
11. Touch the Clear data button. goo.gl/PT37PN
12. If prompted, touch OK on the warning that all the saved information will be deleted.
13. Press the Home key. goo.gl/PT37PN

2. Verify wireless networks are on. goo.gl/PT37PN

For G2:

1. From the Home screen, press the Menu key.
2. Touch Settings.
3. Touch Wireless & networks.
4. Touch Mobile networks.
5. Verify that the Data enabled check box is selected. If it is not, touch it to select.
6. Verify the Use only 2G networks check box is cleared. If it is selected, touch it to clear.
7. Press the Home key.

For myTouch 4G:

1. From the Home screen, press the Menu key.
2. Touch Settings. goo.gl/PT37PN
3. Touch Wireless & networks.
4. Verify the Mobile networks check box is selected. If it is not, touch it to select.
5. Touch Mobile network.
6. Touch Network Mode.
7. Touch GSM / WCDM auto.

goo.gl/PT37PN

1. Remount and re-insert the memory card.
2. From the Home screen, press the Menu key.
3. Touch Settings.
4. Touch SD card & phone storage or SD & phone storage.
5. Touch Unmount SD card.
6. Wait for the phone to say the card is unmounted.
7. Remove the memory card. Insert and remove memory card - myTouch 4G.
8. Re-insert the memory card.

Perform a soft reset.

Open the Play Store and attempt the download again.

If the problem continues:

The problem may be an intermittent error on the Google servers. Wait a few hours to see if it improves.

OR

See Play Store help from Google or contact Google at http://support.google.com/googleplay/?hl=en