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The Samsung Galaxy A03 is a series of budget Android smartphones manufactured by Samsung Electronics that includes the A03, A03s and A03 Core. [7] [8] They have a 6.5-inch FHD+ Infinity-V display, a 5000 mAh Li-Po battery, and ship with Android 11 (can be upgraded to Android 13). [7] The A03 has a dual-camera setup with a 48 MP main camera. [7]
In their marketing materials, Samsung uses the term "Dual SIM Always On” [3] to describe the Duos phones, although both SIM cards are not always on. All phones with this feature are regular, Dual SIM Stand-by (DSS) phones, with 1 transceiver (radio). The second SIM is always disconnected when a call is in progress on SIM 1 and vice versa. The ...
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 ...
The design of the smartphone is similar to the Samsung Galaxy A33 5G. Below are the USB-C connector, speaker, microphone and 3.5 mm audio jack. The second microphone is located on top. Depending on the version, there is a slot for 1 SIM card and a microSD memory card up to 1 TB or a slot for 2 SIM cards and a microSD memory card up to 1 TB.
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Dual SIM standby phones allow both SIMs to be accessed by using time multiplexing. When one SIM is in active use, for example on a call, the modem locks to it, leaving the other SIM unavailable. Older examples of dual-SIM standby phones include the Samsung Galaxy S Duos, [23] the Sony Xperia M2 Dual, [24] and the iPhone XS, XS Max and iPhone XR ...
The phone identifies the subscriber by transmitting the International mobile subscriber identity (IMSI) number, which is stored on a SIM card that can, in theory, be transferred to any handset. However, the network's ability to know a subscriber's current, individual device enables many network and security features.
An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning ; end-users can change mobile network operators without the need to physically swap a SIM from the device.