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.
Check to see if you have a GSM phone. As you recall, SIM cards are specific to GSM phones. Common GSM carriers include AT&T, Straight Talk, TracFone and T-Mobile.1  A GSM phone is a mobile device that uses a GSM (Global System for Mobile Communications) cellular network.2  GSM is one of two types of cellular networks, the other being CDMA (Code Division Multiple Access).here are two main reasons you would be using a SIM card to switch phones. 1  Use the SIM card from your old phone in your new phone so as to save your information. 2  Switch carriers and keep your phone (or avoid having to buy a new one).