LG AS870 - Manual (Page 103)

103
Entertainment
If you have another Android™ phone, you can download a paid
application to that phone using the same Play Store account, at no
additional charge.
To create a Google Checkout™ account
You must have a Google Checkout™ account associated with your Google
Account to purchase items from Play Store.
On your computer, go to http://checkout.google.com to establish a
Google Checkout™ account.
OR
The first time you use your phone to buy an item from Play Store,
you’re prompted to enter your billing information to set up a Google
Checkout™ account.
WARNING!
When you’ve used Google Checkout ™ once to purchase an application from Play Store,
the phone remembers your password, so you don’t need to enter it the next time. For
this reason, you should secure your phone to prevent others from using it without your
permission.