In the main series games, there is a concept of STAB (same type attack bonus), where a pokemon of a certain type will get an additional attack bonus (+50%) when using a move that has the same type. This bonus is in addition to any modifiers caused by the target pokemon’s resistances.
For example, a Fire type pokemon using a Fire type move would do additional damage, compared to a non-Fire type pokemon using a Fire attack, or a Fire type using a non-Fire type attack.
Answer
Yes, it does. But only at 1.25x. Here is the decoded protobuf file. In it is this:
Items {
TemplateId: "BATTLE_SETTINGS"
BattleSettings {
RetargetSeconds: 0.5
EnemyAttackInterval: 1.5
AttackServerInterval: 5
RoundDurationSeconds: 99
BonusTimePerAllySeconds: 10
MaximumAttackersPerBattle: 20
SameTypeAttackBonusMultiplier: 1.25
MaximumEnergy: 100
EnergyDeltaPerHealthLost: 0.5
DodgeDurationMs: 500
MinimumPlayerLevel: 5
SwapDurationMs: 1000
}
}
Attribution
Source : Link , Question Author : shenles , Answer Author : embedded.kyle