Sumera Ahmed, the first thing I would suggest is to replace the battery. Also, check the dock connector, make sure that there are not broken or bend pins
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Sumera Ahmed, the first thing I would suggest is to [https://www.ifixit.com/Guide/iPhone+4+Battery+Replacement/3141|replace the battery|new_window=true]. Also, check the dock connector to make sure that there are no broken or bent pins.
Sumera Ahmed, the first thing I would suggest is to replace the battery. Also, check the dock connector, make sure that there are not broken or bend pins