fix these issues by providing a better software update

[andreneel18]

Please provide knock security in M series i recently both m21 but there is no data network speed and data usage. Also fingerprint does not work properly.  Very disappointed. 

[Rimix]

aapka phone mei knox security hai kya?

[andreneel18]

no

[Ranjdip]

Need update in Knox

[Shank_Sar]

Knox security is a hardware based security, can't be provided by any software update.

[00o]

knox security is hardware based. M31s had it but secure folder was missing and it is now added through an update. I don't think M21 has knox security.

[andreneel18]

m21 fingerprint sensor doesn't work properly... have u any one faced it?

[tx09]

yeah sometimes it works and sometime it dont

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for the inconvenience caused to you and to resolve network issue please follow below given step:

>>Check network operators and select automatically (Settings> Connections> Mobile Network>Network operator> select automatically > Tap on OK > Registered on network).

And to resolve "fingerprint" issue kindly follow the given below step:

>> We always recommend to use screen guards form Samsung only. If you are using any 3rd party screen guard/protective film/tempered glass on the phone, kindly try to re-register your fingerprint after removing it by following these steps.
Disable fingerprint settings and then remove the screen guard.
>>>Register a new fingerprint:-Settings> Bio metric and security>Fingerprints>Continue>Set secure screen lock>Start with center..

If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support