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How to save a contact to your SIM phone book
Dear Berry:  Can I swap between multiple email drafts on the BlackBerry PlayBook?
How to connect to and switch mobile networks using the 4G LTE BlackBerry PlayBook
How to use Gmail 2-step verification with your BlackBerry
Quick Tip: Press the Alt + Back key on your BlackBerry to quickly multitask
Troubleshooting BlackBerry data issues
Emergency broadcast messages explained

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