There are two ways to obtain the Type Approval Certificate (TAC) from ICTA when importing mobile phones, tablets, laptops/computers or other radio communication devices to show to custom officers when your device reaches Mauritius.
Go to these links depending on what you're buying:
If your device is listed (make and model being exact), you just need to email the Type Approval Reference to firstname.lastname@example.org eg (TA/2013/454 of Apple iPad A1490). You should receive your TAC within a couple of days.
If you can't find your device in those 2 lists, then you will need to make an application to ICTA and send some documentation along so they can check whether what you're trying to import conforms to standards.
Download the Application Form for Type Approval of Radiocommunication/Telecommunication Equipment, fill it out and post it to them. You should receive your TAC within 2 weeks.
The application tells you exactly what documents are required but there are two things which are crucial and they are:
- Technical brochure containing a general description of the equipment and full technical specifications, including operating frequency, effective isotropically radiated power (e.i.r.p) and channel spacing of the equipment.
- Declaration of Conformity of the equipment issued by manufacturer or Certificate of Compliance Certificate or Notified Body Expert Opinion / Notified Body Statement of Opinion. (at least one of these documents is mandatory).
Check out the link in @MikeSin answer as well for more information.