How do I get my Lumia 640 XL bought from AT&T repaired?

[Windows Central Question]

My phone is hosed.

Half my apps won't run at all.

The phone keeps doing a soft reset all on it's own. I will be doing something on an app that is still working and wham it goes into a soft reset.

Browsers shut off after a few seconds ... they start then wham back to the start screen.

I've done soft and hard resets and nothing helps.

I think it needs to be formatted and start from scratch.

Do I send it to Microsoft or to AT&T?

 

[libra89]

First, you have to check if your phone is still under warranty. Go through this Microsoft tool to get to the warranty page: https://support.microsoft.com/en-us/help/10280/lumia-troubleshooting-and-repair

If nothing works, you can go to the B2X page, who now handles Microsoft phone support: https://support.b2x.com/

On that page, I would suggest for you to go through the tools on that page and see what they say.