Not immediately. A ported mobile telephone number may not be ported (whether to your previous service provider or to any other service provider) for six months after the port has been completed.
Can I switch back to my old service provider should I experience difficulty with my new service?
Yes. Quality of service issue(s) should be reported to your new service provider within five working days of your telephone number being switched over to their network.
Should the new service provider be unable to resolve these issues to your satisfaction within five working days of your report, a request can be made to the new service provider for an emergency port back to the original service provider.
After returning to your original service provider due to service issues you will be allowed to port again without having to wait the six month period.