You will need to do test using your SIM and provide the report of your test result in few countries of below:
You will need to have local SIM in order to do apply this job. Local people from individual of the above countries are welcome to submit your application.
NOTE: This is a continuous jobs upon request up-to end of this year. Payment will be paid by each project. 1 project (report) will be paid @ US$5 (included your SIM credit)