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2. iPhone 12 - Wikipedia

   en.wikipedia.org/wiki/IPhone_12

   Displays. The iPhone 12 features a 6.1-inch (155 mm) display [33] with Super Retina XDR OLED technology at a resolution of 2532 × 1170 pixels and a pixel density of about 460 ppi. [34] The iPhone 12 Mini features a 5.4-inch (137 mm) display with the same technology at a resolution of 2340 × 1080 pixels, and a pixel density of about 476 ppi.

3. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   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 ...

4. eSIM - Wikipedia

   en.wikipedia.org/wiki/ESIM

   The first iPhone models to not have a SIM card tray and work exclusively with eSIM were the iPhone 14 and 14 Pro, announced in 2022. [11] Outside the United States, all iPhone models continue to be sold with support for physical SIM cards, but the iPad Air (6th generation) and iPad Pro (7th generation), announced in 2024, work exclusively with ...

5. iPhone hardware - Wikipedia

   en.wikipedia.org/wiki/IPhone_hardware

   The iPhone 5 and later iPhones use nano-SIM in order to save space internally. The iPhone XS and later iPhones added eSIM support in addition to nano-SIM, therefore they support Dual SIM functionality. iPhone 14 and 14 Pro and later models sold in the United States do not have the SIM card slot, and instead only supports eSIM. [81]

6. Personal unblocking key - Wikipedia

   en.wikipedia.org/wiki/Personal_unblocking_key

   A personal unblocking key (PUK), sometimes called personal unblocking code (PUC), is used in SIM cards to reset a personal identification number (PIN) that has been lost or forgotten. Most mobile phones offer the feature of PIN protection. After switching on the phone, if the PIN security function is active, the user is required to enter a 4-8 ...

7. iPhone - Wikipedia

   en.wikipedia.org/wiki/IPhone

   The iPhone is a line of smartphones developed and marketed by Apple that run iOS, the company's own mobile operating system. The first-generation iPhone was announced by then–Apple CEO Steve Jobs on January 9, 2007, at Macworld 2007, and launched later that year. Since then, Apple has annually released new iPhone models and iOS versions; the ...