[Dogeatdog]

Yh I’d more than likely say that the battery is probably knackered and needs replacing especially if it’s an older phone. My old IPhone 6 has this issue, I won’t even use the phone and the battery life would drop from like 80% to something like 15%. Also sometimes the phone would be on 30% and just die straight away so I’d need to plug the charger in to turn on the phone again and then when it finally turns back on, it’d be on 20% or something random .

I never bothered to replace the battery tho because I ended up getting a newer phone and I only use the old one for music now.