Microsoft Lumia 640 - Dual SIM features

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Dual SIM features
Don’t want work to interfere with your free time? Or do you have a cheaper data connection

on one SIM? With a dual SIM phone, you can use 2 SIM cards at the same time.
Dual SIM is not supported by all phones. For availability, go to www.microsoft.com/mobile/

support/wpfeatures.
Your phone shows the network status for both SIMs separately.
You can select which SIM to use straight from your start screen. For example, to make a call

or check your messages, simply tap the tile you want for SIM1 or SIM2. Or, if you’d rather have

only one tile, you can link the tiles.
Even when dialling, you can quickly switch between the SIMs. If you know you always want to

use the same SIM for a contact, such as your work SIM for a colleague, you can set the SIM

preferences in contacts.
Both SIM cards are available at the same time when the device is not being used, but while

one SIM card is active, for example, making a call, the other may be unavailable.

© 2015 Microsoft Mobile. All rights reserved.

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Tip: Want to make sure you don’t miss a call on one SIM while having an active call on

the other? Use Smart Dual SIM to set your SIMs to forward calls between them or to

another phone. For availability of this feature, contact your network service provider.