Iphone 7 plus after water damage it showing 1percent charge and suddenly increasing and also restarting in after few minutes any solution plzz
I think that you would have to assume tristar/tigris, but I would look to where the water entered and start there.
constant 1% battery life is almost always the battery switch line which is the middle pin on the battery connector. You can diode mode that and see what you get.
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