Most of us are aware of Windows 10 MobileInsider Preview (previously known as Windows 10Technical Preview) build which is available for free download to public. Microsoft has released the first testing build of Windows 10 Insider Preview for phones and its available for free download to public.

In this blog post, we are going to provide an ultimate guide of step-by-step help on how to install Windows 10 Mobile Insider Preview on your Nokia/Microsoft Lumia 640 XL Dual SIM. The guide is based on our expert advice and reviews made on Windows 10 Mobile Insider Preview on Nokia/Microsoft Lumia 640 XL Dual SIM.

Windows 10 won’t launch until later this year but you can already try it out on your Nokia/Microsoft Lumia 640 XL Dual SIM smartphone. Here’s how to install the Windows 10 Insider Preview on your Nokia/Microsoft Lumia 640 XL Dual SIM phone.

Step-by-Step guide for downloading & installing Windows 10 Mobile Insider Preview on your Nokia/Microsoft Lumia 640 XL Dual SIM | How to Download & Install Windows 10 Mobile Insider Preview on my Lumia 640 XL Dual SIM | Download & Install Windows 10 Mobile Insider Preview | Nokia/Microsoft Lumia 640 XL Dual SIM Windows 10 Installation

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This time Microsoft has decided to provide same core platform (UI, features, etc) of Windows 10 to computers, tablets and phones, so you’ll notice many similarities between Windows 10 Insider Preview for computers and your Nokia/Microsoft Lumia 640 XL Dual SIM mobile phone.

If you are ready to test Windows 10 Insider Preview in your Nokia/Microsoft Lumia 640 XL Dual SIM Windows Phone, check out following steps:

Step #1: Check for the Compatibility of you Nokia/Microsoft Lumia 640 XL Dual SIM

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This preview build of Windows 10 for phones can be installed in a few selected Lumia 640 XL Dual SIM phones only. Check out following topic to learn which mobile phones are supported by Windows 10 Insider Preview: List of Lumia 640 XL Dual SIM Mobile phones supported for Windows 10 Insider Preview.

So if you have a supported Nokia/Microsoft Lumia 640 XL Dual SIM mobile phone, you can install and test Windows 10 Insider Preview build. Support for more phones will be added in future builds.

One more thing to keep in mind! Your Nokia/Microsoft Lumia 640 XL Dual SIM mobile phone must have at least 8 GB of free storage and Windows Phone 8.1 should be installed on the phone.

Check out how to install Windows Phone 8.1 on your Nokia/Microsoft Lumia 640 XL Dual SIM here.

Step #2: Join Windows Insider Program:

If your Nokia/Microsoft Lumia 640 XL Dual SIM Windows phone is on the supported phones list, you can download and install Windows 10 Insider Preview build by first joining Windows Insider program: Join Windows Insider Program

If you joined Windows Insider program at the time of downloading Windows 10 Insider Preview build for computers, you don’t to join it again. You can sign in using the same Microsoft account.

Step #3: Register your Lumia 640 XL Dual SIM Phone to Receive Windows 10 Build as OTA Update

After joining Windows Insider program, you’ll need to download and install Windows Insider app in your Nokia/Microsoft Lumia 640 XL Dual SIM phone using any of following links:

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Alternatively, you can also install it by searching for Windows Insider app using Store in your Nokia/Microsoft Lumia 640 XL Dual SIM Windows phone.

Step #4: Download Windows 10 Insider Preview for Lumia 640 XL Dual SIM Phones

After installing Windows Insider app, open the app and sign in using same Microsoft account. You’ll see Windows 10 Insider Preview download and installation instructions, just follow them. Your Nokia/Microsoft Lumia 640 XL Dual SIM Windows phone might restart several times to complete Windows 10 Insider Preview installation.

1. Once installed, launch the app and select the ‘get preview builds’ option.
   
2. You’ll need to enroll on the Windows Insider programme to get preview builds of the software and you have two options, Insider Slow or Insider Fast.
   Select the one you prefer and hit the arrow button at the bottom of the screen.
3. Before you can install Windows 10 on your Nokia/Microsoft Lumia 640 XL Dual SIM phone you have to accept the terms and conditions of the Insider Programme. Most importantly it could void your warranty and as we mentioned it could be buggy making your device unusable in some ways.
   We don’t advice installing it on your main phone. If the device is your main phone and you really want to install Windows 10, opt for the Slow Insider option to ensure a more stable build.
4. Once you’ve accepted the terms, simply head to the ‘phone update’ section of the system settings and hit the ‘check for updates’ button.
   
5. Once the update has downloaded and installed, your Nokia/Microsoft Lumia 640 XL Dual SIM phone will reboot and migrate some data. You’ll then be given a ‘success’ message but you’re not quite done. As it says, you can leave the phone plugged into the mains and let it do the rest or head to the Insider app to finish the upgrade.
   

So . . .

Please keep in mind that Windows 10 Insider Preview for phones is a testing build and you might face bugs and issues after installing it. So install it if you feel you are ready for it. Do let us know, whether you found these tips useful?

Although there are several options to use when trying to communicate with family or friends, these days the choices boil down to SMS or WhatsApp. The latter, of course, seems the more preferable of the two as it’s more cost-effective. As long as there’s an internet connection, users can communicate with loved ones living locally or even abroad.

The Asha series of phones were produced by Nokia as a budget offering. Microsoft purchased the mobile device business of Nokia and shortly after announced that it was ending the Asha line to focus on creating Lumia Windows Phones and other Nokia phone products. The good news is that WhatsApp hasn’t withdrawn support of their popular messaging application from the phone.

Supported Nokia Asha devices

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WhatsApp was initially supported on a Nokia S40 but the company announced they would continue support for the device until June 30, 2017. While that is good news, it still points to the inevitable fact: support will definitely be terminated soon.

For example, people in India have noticed that they have problems accessing WhatsApp under specific telcos. If you’re one of those people, there is a fix for it. In the phone’s settings, hit Configuration, Preferred Access Point and pick the provider you’re with. After that, go back to Settings and Configuration and hit Default config. settings. This will erase the configuration settings. You’ll need to restart the device.

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If problems persist, it could be one of the channels WhatsApp is using. The wireless access point settings may be blocked by the cell phone provider. If this happens to be the case, users need to reach out to their mobile providers.

Then again, WhatsApp still supports a couple other Nokia devices like the Asha. Here’s a list of the Asha line of devices supported by WhatsApp:

• 201
• 205 Chat Edition
• 210
• 230 Single SIM
• 230 Dual SIM
• 300
• 302
• 303
• 305
• 306
• 308
• 309
• 310
• 311
• 500
• 501
• 502
• 503

Installation of WhatsApp on Nokia Asha phones

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Here’s how to download and install WhatsApp on Nokia Asha phones:

1. Make sure that your device is supported. Check the list above to see if your Asha device is supported. If so, you can proceed with the next steps.
2. Go to your phone’s Main Screen. Open up the Internet Browser of your device.
3. Type in the link where you can download WhatsApp: https://www.whatsapp.com/s40/. Although the link points to a download for the Nokia S40, your Asha phone is compatible so this will work fine.
4. Choose Download Now. After that, just follow the prompts you see on screen.

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Just like many other apps, WhatsApp is frequently updated to address security issues and provide improvements. That said, you must always make sure to get the latest version for your Asha device.