Shariff Saydona Mustapha comprises 16 barangays with an estimated population of 7,732. 16 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bakat | 250 | 0 | Dead zone: no towers from any source |
| Dale-Bong | 637 | 0 | Dead zone: no towers from any source |
| Dasawao | 1,595 | 0 | Dead zone: no towers from any source |
| Datu Bakal | 625 | 0 | Dead zone: no towers from any source |
| Datu Kilay | 443 | 0 | Dead zone: no towers from any source |
| Duguengen | 227 | 0 | Dead zone: no towers from any source |
| Ganta | 259 | 0 | Dead zone: no towers from any source |
| Inaladan | 411 | 0 | Dead zone: no towers from any source |
| Libutan | 176 | 0 | Dead zone: no towers from any source |
| Linantangan | 752 | 0 | Dead zone: no towers from any source |
| Nabundas | 362 | 0 | Dead zone: no towers from any source |
| Pagatin | 421 | 0 | Dead zone: no towers from any source |
| Pagatin (Pagatin I) | 238 | 0 | Dead zone: no towers from any source |
| Pamalian | 295 | 0 | Dead zone: no towers from any source |
| Pikeg | 839 | 0 | Dead zone: no towers from any source |
| Pusao | 202 | 0 | Dead zone: no towers from any source |