I don't know whether the Digicell network has simply become outdated because of rampant new development and building, or whether there are electronic faults that simply aren't being addressed. I suspect it's some of each. Until the new Harmouche building near Pedro's was erected I had good Digicell reception throughout my house. Now I have sketchy cover if any at all. So it's down to the new concrete building? Well, possibly not, as standing in the street alongside the building, and hence not shielded by it, I still only have patchy coverage whereas it used to be "perfect".
Either way, there is clearly a major problem that BTL seem to be doing nothing to sort out. Maybe they've decided that with the competition of Smart the mobile phone business is no longer an attractive business, and they're letting it die through attrition and natural wastage?