I mentioned mobile number portability a few days ago. It seems that its implementation hasn’t gone as smoothly as we thought and the main issue is with phone numbers belonging to Warid.
Though not all Warid numbers are affected, certain cell numbers can’t be called from my phone (Ufone) or from other services such as Mobilink. Strangely, those numbers can call me and we can SMS each other just fine.
The issues aren’t really limited to Warid numbers either, though I have seen them to be most common with their service. Some of my friends are also having problems calling Mobilink to Mobilink. It is also strange that none of these numbers have applied for “portability” to another network and have been running fine for a long time.