Solution : https://service.sap.com/sap/support/notes/1428518 (SAP Service marketplace login required)
Key words : 
mass device setup reason, mass device setup, symptom mobile client, preceding de-installation, mass devicesetup, mobile client, de-installation, -installthe client, terms defense, started solution
Related Notes : 
       
| 1428519 | additional info about SAPMDS 1.6 SPs and patches (client) |