My old iphone 3G's battry would not hold a charge, so I ordered the replacement battery kit.
The video and the repair guides were easy to follow. The installation was a breeze. Now the challenge came when putting everthing back together.
After replacing the battery, I could not get connection number 6 to come together again. After I read the repair guide and a little google search I lossen the number 6 screw at the other end of ribbon 6 to give a little bit of slack, then with a magnifier glass I lined up the connectors perfectly and make pushed down firmly but softly, the it made a connection. Connector number 6 I learned is your wifi so you have to make the connection number 6.