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Dual SIM dual active (DSDA) phones have two transceivers, and can receive calls on both SIM cards, at the cost of increased battery consumption and more complex hardware. [ 26 ] [ 27 ] One example is the HTC Desire 600 .
A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone ...
Each SIM card in a Samsung dual SIM phone can be set to on or off independently in the top section of the SIM card Manager menu. When both are set to ON, then both can connect incoming calls, but only one at a time. If SIM 2 is in use, a caller to SIM 2 will be redirected by the carrier network as though the phone were off or out of range.
Such phones make sense in those countries that have both GSM & CDMA networks or international CDMA roamers who want to keep a single handset with two numbers on it. Most dual-mode handsets require two identifying cards (one SIM and one RUIM ), though some dual-mode phones (for example, the iPhone 4S) only require one SIM and one ESN.
For a classic example for understanding the fundamental difference of TDMA and CDMA, imagine a cocktail party where couples are talking to each other in a single room. The room represents the available bandwidth: TDMA: A speaker takes turns talking to a listener. The speaker talks for a short time and then stops to let another couple talk.
No physical SIM card form-factor in U.S. models Dual SIM with one Nano-SIM and one eSIM: Dual SIM with one Nano-SIM and one eSIM, supports dual eSIM Dual SIM with one Nano-SIM and one eSIM: Dual Nano-SIM in mainland China, Hong Kong and Macau Single Nano-SIM in mainland China Dual Nano-SIM in mainland China, Hong Kong and Macau Single Nano-SIM ...
Samsung Galaxy Core GT-I8260 single sim card slot model and Samsung Galaxy Core GT-I8262 dual sim card variant are smartphones manufactured by Samsung Electronics that run on the open source Android 4.1.2 Jelly Bean operating system.
Samsung Galaxy S Duos also known as GT-S7562 is a dual SIM smartphone, designed and marketed by Samsung Electronics.In contrast with other dual sim Samsung models, this phone is a part of the high-end "S" series, this is why it is marketed as a part of the "''Galaxy S'' family.
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