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I replaced my battery yesterday, then I let the phone set over the night and today I’m trying to charge it. But the apple logo first appears, then disappears, with 5 seconds showing, and 3 seconds shut off. I plugged in everything according to instructions. I’m not sure what the problem is. Help me, please!
You might have had bad luck with your purchase and received a faulty battery. It might as well have happened some unintentional damage to the phone’s board during replacement. Try reinstalling your old battery to get confirmation it’s just a battery issue.