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I am getting this error message on a Xiaomi Redmi Note 2:

Can't get valid Device ID

Invalid Device ID: null

Device ID must be valid IMEI or MAC address. Without device id, some account and cloud features will be unavailable.

It pops up randomly, sometimes it appears several times (I click Ok to dismiss it) in a minute, sometimes it doesn't show up in about an hour. It interrupts apps and the phone (and all phone related features like sms) does not work, as it doesn't detect the sim card, which actually works, as I have tested it in another phone.

I woke up and this started happening suddenly. Usually the phone updates apps at night, so that might be it.

The following information might come useful:

  • Model number: Redmi Note 2.
  • Android Version: 5.0.2 LRX22G
  • Android Security Patch Level: 2016-04-01.
  • MIUI version: MIUI 7.4 by xiaomi.eu 6.5.5 | Beta

Note: This is the issue same issue as this one: http://en.miui.com/thread-109909-1-1.html

The solution given there does not fix the problem.

  • Is your device rooted? Do you use any kind of permission manager, and have revoked the READ_PHONE_STATE permission from some app that might "need" it? Because that's the permission required to access the IMEI. – Izzy Aug 31 '16 at 11:58
  • @Izzy As far as I know, Xiaomi devices (at least redmi note) come rooted. I have no permission manager other than Miui's. – D1X Aug 31 '16 at 15:37
  • OK, and have you restricted some app in the way outlined? I'm not sure how much Miui's permission manager permits :) – Izzy Aug 31 '16 at 16:56
  • @Izzy I don't think so. This started happening without me doing anything special. – D1X Aug 31 '16 at 22:08
  • 1
    Was an idea – unfortunately the only one I had. – Izzy Aug 31 '16 at 22:33

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