Bought a 4s for my son, battery life seemed quite bad, replaced battery as easiest option.
still the same, so restored the phone to new and latest Apple update.
battery is still the same dropping a full 100% in 14 hours, with no use or apps running (no apps installed)
couldnt see any visable water damage when opening the phone, asked for a replacement battery and was told they will send one but it's very rare they have any issues with returns on there battery's.
it must be something else as both the old and new battery drain extremely quick - 300 hours standby? Prffftttttt
Thanks in advance 👏👍👌✌️