Q: iphone 4 ear speaker not working after replacement

Find a competent 3rd party repair shop or buy a new phone. Apple won't touch that one now that it's been tampered with.

Do earphones work?

iPhones are not user serviceable.

Apple does not sell iPhone parts.

This is an Apple sponsored forum.

We can't help you. Ask for help somewhere else, find a competent repair shop, or buy a new phone.

Frequently when stuck in headphone mode it is due to the little switch in the headphone jack sticking shut. Sometimes cleaning the jack with alcohol and inserting/taking out a headphone plug a dozen times or so help.

Also have you tried restoring to factory settings/new iPod since sometimes a software glitch can cause the device to be stuck in headphone mode.

Then take the device to a third-party repair place who knows what they are doing or live without the internal speaker.