olemus
kahe SIM-kaardiga (mobiiltelefon)
= (cellphone) supporting use of two SIM cards (cellphone)

ülevaateid
https://www.spark.co.nz/help/mobile/understand/dual-sim/

https://www.gsmarena.com/dual_sim-review-154.php

https://en.wikipedia.org/wiki/Dual_SIM