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2. GSM - Wikipedia

   en.wikipedia.org/wiki/GSM

   A nano sim used in mobile phones. One of the key features of GSM is the Subscriber Identity Module, commonly known as a SIM card. The SIM is a detachable smart card [2] containing a user's subscription information and phone book. This allows users to retain their information after switching handsets.

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. Dual SIM - Wikipedia

   en.wikipedia.org/wiki/Dual_SIM

   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 ...

5. US retailers aim to cash in on Cyber Monday with steep online ...

   www.aol.com/news/us-retailers-aim-cash-cyber...

   Online, retailers like Walmart and Amazon have relied on generative AI customer service and search features to make it easier for shoppers to find products on websites and mobile apps.

6. Dual-mode mobile - Wikipedia

   en.wikipedia.org/wiki/Dual-mode_mobile

   Mobile phones contain both cellular and non-cellular radios used for voice and data communication. There are also two types of dual-mode phones which use cellular radio which will contain GSM/CDMA/W-CDMA as well as other technology like IEEE 802.11 radio or DECT (Digital Enhanced Cordless Telecommunications) radio.

7. Comparison of mobile phone standards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_mobile_phone...

   SIM card: Some electronics, e.g. amplifiers Good coverage indoors on 850/900 MHz. Repeaters possible. 35 km hard limit. Very low density Hard Yes GPRS Class A 2G: CDMA: IS-95 (CDMA one) Digital: 1995 Limited None None Unlimited cell size, low transmitter power permits large cells Very low density Soft No 3G: CDMA: IS-2000 (CDMA 2000) Digital ...

8. eSIM - Wikipedia

   en.wikipedia.org/wiki/ESIM

   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.

9. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!