Editing SIM card (section)

== Multiple-SIM devices ==
{{Main|Dual SIM}}
[[File:Picture of a feature phone with Dual SIM.png|thumb|244x244px|Dual SIM slots as shown on a [[feature phone]]]]
[[Dual SIM]] devices have two SIM card slots for the use of two SIM cards, from one or multiple carriers. Multiple SIM devices are commonplace in developing markets such as in [[Africa]], [[East Asia]], [[South Asia]] and [[Southeast Asia]], where variable billing rates, network coverage and speed make it desirable for consumers to use multiple SIMs from competing networks. Dual-SIM phones are also useful to separate one's personal phone number from a business phone number, without having to carry multiple devices. Some popular devices, such as the [[BlackBerry KeyOne]], have dual-SIM variants; however, dual-SIM devices were not common in the US or Europe due to lack of demand. This has changed with mainline products from Apple and Google featuring either two SIM slots or a combination of a physical SIM slot and an eSIM.

In September 2018, [[Apple Inc.|Apple]] introduced [[iPhone XS]], [[IPhone XS|iPhone XS Max]], and [[iPhone XR]] featuring Dual SIM (nano-SIM and [[eSIM]]) and [[Apple Watch|Apple Watch Series 4]] featuring Dual [[eSIM]].