10 - 30 minuten
iphone 4s 3 year old battery. Enough said.
15 minutes to replace. No problems,
First, make sure you watch several of the videos available on how to replace the battery. Pay attention to the little black and gold grounding clip orientation. Note that the two screws securing the battery connector to the mainboard are NOT identical. One is shorter than the other. Do NOT use metal spudgers to remove old battery. Do NOT try and pry battery from logic board side. Be Patient! The old battery WILL come out eventually. Make sure to clean the black and gold ground clip and the bottom of the battery connector (only in the screw hole area) as well as the back cover inside metal with a true contact cleaner or alcohol (at least 91%) before replacement. Make sure not to touch connectors or grounding clips with bare hands to avoid contamination. Before doing anything, put the phone in airplane mode, turn off Wi-Fi and bluetooth, and power down. Then remove the SIM card. After replacing the battery, the phone may turn on by itself. If it does, let it cycle on, then power it down fully. Turn it back on, and enable Wi-Fi. If you can connect with Wi-Fi, then power off again, then insert the SIM card and power up once more. Turn off airplane mode and after searching for a few seconds you should have cellular and time and date will be reset to current. If you did everything right, you should be back in business. Don't forget to deep cycle the battery a couple of times before normal charging.