There are a few machines on the market that claim to "dry", and subsequently, "save" your wet cell phone and all of those contacts, photos, videos, selfies, diary, notes, memos, apps, music, and who knows what else that you forgot to back-up before your phone met Mr Toilet or Mrs Lake.
One of the most notable is TekDry's heated vacuum chamber. This post isn't to specifically pick on TekDry, or their innovative invention. This post is to pick on ALL "phone drying" gimmicky machines.
Any device "drying" machine is gimmicky and relies on dumb luck to "fix" a wet phone. The science (a heated vacuum chamber) is sound, but the logic is flawed.