Dual standby allows both SIM cards to stay active and receive calls and messages at the same time, which is also supported by certain dual SIM devices. Carrying multiple devicebest slots app uks is no longer necessary thanks to this technology, which has made managing numerous phone numbers and plans easier. There are only a few easy steps involved in setting up dual SIM on the iPhone 15. Make sure your iPhone 15 is turned on and unlocked before starting. Next, launch the Settings app, then locate the "Cellular" option by scrolling down.
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