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2. SIM lock - Wikipedia

   en.wikipedia.org/wiki/SIM_lock

   A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.

3. Motorola Fone - Wikipedia

   en.wikipedia.org/wiki/Motorola_Fone

   However, for slightly more (starting at ca. €30) it could also be bought without SIM-lock or card, giving full freedom to choose any provider. In Brazil, this phone (without SIM-lock) was sold for R$99.00 as of February 2008 (approx. USD 57.00). The SIM-locked version could be purchased for R$29.00 (in telephone carrier stores).

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 iPhone 14 Pro, announced in 2022. [20] Outside the United States, all iPhone models continue to be sold with support for physical SIM cards, but the iPad Air (6th generation) , iPad Pro (7th generation) , and iPad Mini (7th generation ...

5. The best flip phones for seniors in 2025 - AOL

   www.aol.com/lifestyle/best-flip-phones-184204157...

   Easyfone Prime-A1 Pro 4G Easy-to-Use Flip Cell Phone, 2.4'' HD Display, Big Buttons, Clear Sound, Large Fonts, SOS Button, SIM Card Included, Dumbphone with 1500mAh Battery and a Charging Dock (Black)

6. Over-the-air update - Wikipedia

   en.wikipedia.org/wiki/Over-the-air_update

   The alternative to OTA bootstrapping is SIM bootstrapping, where the phone reads the network settings stored on a SIM card. SIM bootstrapping has limitations: settings stored on a SIM card may become stale between the time the SIM is manufactured and the time it is used; also, some phones (and other cellular client equipment) do not use SIM cards.

7. International Mobile Equipment Identity - Wikipedia

   en.wikipedia.org/wiki/International_Mobile...

   This renders the phone useless on that network and sometimes other networks, even if the thief changes the phone's SIM card. Devices without a SIM card slot or eSIM capability usually do not have an IMEI, except for certain early Sprint LTE devices such as the Samsung Galaxy Nexus and S III which emulated a SIM-free CDMA activation experience ...

8. Lost your contacts on your phone? Here's how to get them back

   www.aol.com/news/lost-contacts-phone-heres-them...

   4 Ways To Find Your Lost Iphone, With And Without Other Devices There are two resources Android users can use to restore contacts: Google Contacts or Device settings.

9. iPhone hardware - Wikipedia

   en.wikipedia.org/wiki/IPhone_hardware

   An iPhone 4S activated on a CDMA carrier, however, does have a SIM card slot but does not rely on a SIM card for activation on that CDMA network. A CDMA-activated iPhone 4S usually has a carrier-approved roaming SIM preloaded in its SIM slot at the time of purchase that is used for roaming on certain carrier-approved international GSM networks ...