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my battery was so bad then i changed it after that the phone dose not working at all even thou i tried to check the cables still not working ,! plz help maybe the screen problem
Check that the battery cable is properly connected and that the connectors on the cable and logic board are damaged. Also, check all the other cables and connectors on the logic board. It’s also possible you received a defective battery. Try plugging it into iTunes, if iTunes can see it then it’s most likely just that the display is improperly connected.
How do you removed the battery? Sometimes you can get an pry damage with batterys change