Hi Mostafa - The Service Request mobile application is for creating service requests, reviewing the service requests you raised or were raised on your behalf, adding a log note or additional photo. You cannot otherwise update the SR from this application, or change status, or perform any other action - and if you coded it to do so you would more than likely break licensing rules. The Service Request mobile application is for someone who raises an SR, not for the person who reviews or processes the SR. The person who uses this app does not consume any AppPoints, that is why the functionality is limited to the functions a requester would want.
The old Supervisor Work Center allowed a Supervisor to review, change, approve an SR and raise a follow-up work order. That functionality has not yet made its way into Maximo Mobile, I would imagine it will be added to Work Approval, but that app has hardly changed in several releases. I would search for an Idea, and if you can't find one raise a new one - I am sure lots of people will vote for this. My guess is that with Maximo IT coming back into MAS that reinstating this functionality in Maximo Mobile will be fairly high on the roadmap, but I haven't seen it mentioned yet.
Regards - Andrew