Questions tagged [lumia-640-xl]

Microsoft Lumia 640 XL is a smartphone which is a successor to the Nokia Lumia 630 series. Use this tag to ask questions related to this smartphone only.

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How to do a hard reset?

I have a Lumia 640XL and I updated it two nights ago to Windows 10. Now, along with other things, I can't add contacts to the People app, and it just shuts down every time I click on the plus button ...
5
votes
1answer
1k views

Not able to send / receive messages in WhatsApp

WhatsApp was working absolutely fine just an hour ago, suddenly it stopped receiving any messages nor I am able to send any. Internet connection is absolutely fine. I tried to reboot the phone and ...
5
votes
2answers
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Not able to send SMS from my Lumia 640 XL LTE?

I bought a new Lumia 640 XL LTE and after inserting SIM, I am able to call and receive SMS but not able to send text messages. Can anyone suggest what might be the issue and do I need to change any ...