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1

Before you start

This guide will show you how to reset your SMS service if your messages are not reaching the recipients.

2

Select Messaging

Select Messaging
3

Select the Menu button

Select the Menu button
4

Select Settings

Select Settings
5

Scroll to and select SMS centre number

Scroll to and select SMS centre number
6

Enter the SMS centre number

Enter the SMS centre number

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Set up SMS

Microsoft Lumia 640 Dual SIM

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