Hoenn walkthrough section
Pokemon Ruby and Sapphire Phase 2: Dewford Town
Knuckle Badge Dewford has a Gym, a cave to the north, and a town trend system that mostly matters for flavor.
Phase 2 Knuckle Badge Devon Goods, Dewford Town, Granite Cave, Steven's letter, and Brawly. 02 / 10 
Phase 2 section 6 of 9
Dewford has a Gym, a cave to the north, and a town trend system that mostly matters for flavor.
GuidePokemon Ruby and Sapphire
PhasePhase 2
Section6/9
Dewford Town
Dewford has a Gym, a cave to the north, and a town trend system that mostly matters for flavor. The important decision is whether to fight Brawly before or after Granite Cave.
The clean route is to enter Granite Cave first, get HM05 Flash from the hiker near the entrance, catch or train what you need, then beat Brawly so Flash becomes usable outside battle. After Brawly, go deeper and deliver Steven’s Letter.