1 The comma and period always go inside the closing quotation mark when there is no parenthetical reference. 2  The comma and period always go inside a quotation within another quotation when there is no parenthetical reference.3  The period goes outside of the quotation mark when using a parenthetical reference. The comma and period always go inside the closing quotation mark when there is no parenthetical reference. 2  The comma and period always go inside a quotation within another quotation when there is no parenthetical reference.
You CANNOT use 2 phones with the same number at the same time. But the Blackberry and IPhone uses different data plans. Every time you change the SIM card, you would need to notify AT&T of the change so that they can change the data plans to match the phone you are using.
If you already have a phone number from another provider, just put the sim card from your current phone into the new phone and it should work according to the answers I have been getting on this thread. It is important that your current provider be on a GSM network.