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Replaced battery and the ear speaker no longer works. Speaker phone, camera, light sensor, etc all work fine. I disassembled the phone again and found that the ribbon cable on the first cable connecter you disconnect from the screen is slightly torn (I thought I was so careful! Replaced a battery before with no problems). I’m not completely sure if I now need to buy the front camera sensor cable connector to repair this or if i should order a different part. Any suggestions? Thank in advance.

You’ll need to replace the front camera ribbon cable to fix that problem. Very common to tear that exact spot on the ribbon cable if the screen was not unplugged or the cable being pulled too hard on during the battery replacement. iPhone 6 Front Camera and Sensor Cable iPhone 6 Front-Facing Camera and Sensor Cable Replacement