About archive option

[Samsung_HAz1m0U]

Please provide archive option in messages which is missing. It will be very helpful to save important messages 

[ADSoomeet]

You can use the 'Star message' feature.

1. Long press on any text message.
2. Select 'Star message' option from the pop-up menu.

The message will be starred. I won't get deleted unless you select 'Include starred message' while deleting.

Hope it helps your purpose.

[syedtanvir]

okkk will be there