What to look out for when soldering the battery wires
I've got a iPhone 1st Gen that I'm trying to get the battery changed.
After desoldering the old battery out and soldering the new battery in, the phone wouldn't charge.
When I plug the charging cable in, the apple logo shows for a bit, then disappears. And that's all it'll do.
I know I've got the black cable correctly soldered as there is contact between it and the big metal cover above it.
How do I go about testing the red and white cable if they are soldered in correctly?