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Order the Unlock Code of your Microsoft Lumia 640 Dual SIM

Important: Select the Network your Microsoft Lumia 640 Dual SIM is originally from. Do NOT select the network you want to use.

When I order an Unlock Code for my Microsoft Lumia 640 Dual SIM, what will I receive?

We provide you with the Unlock Code to permanently unlock your Microsoft Lumia 640 Dual SIM.


In case your Microsoft Lumia 640 Dual SIM requires multiple Unlock Codes, all Unlock Codes necessary to unlock your Microsoft Lumia 640 Dual SIM are automatically sent to you.


We also provide detailed instructions on How To Unlock your Microsoft Lumia 640 Dual SIM. In most cases the procedure is very easy:


Our Support Team is there to help with any questions you may have, please feel free to contact us anytime!

How to Unlock Microsoft Lumia 640 Dual SIM?

  1. Insert SIM card from a source different than your original Service Provider (i.e. if you have a Rogers phone, use a non-Rogers SIM card).
  2. Microsoft Lumia 640 Dual SIM will ask you to enter SIM Unlock PIN.
  3. Enter Unlock Code.
  4. Your Microsoft Lumia 640 Dual SIM will be unlocked!

Any suggestion? Want to help us improve our Guideline to unlock Microsoft Lumia 640 Dual SIM ? or those are not accurate ? Please contact us

Other names for Microsoft Lumia 640 Dual SIM

  • Microsoft RM-1077

ITSON IMEI Unlock is an incorporated company, we've been unlocking cell phones for
20 years now and strives to provide the best service for our clientele.

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All products, and company names, logos, and service marks (collectively the "Trademarks") displayed are registered® and/or unregistered trademarks™ of their respective owners. ITSON IMEI Unlock is not associated with or sponsored by Microsoft. The authors of this web site are not sponsored by or affiliated with any of the third-party trade mark or third-party registered trade mark owners, and make no representations about them, their owners, their products or services.

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Our Last 4 Certified Reviews

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