When I answer a call the person on other side says there is a lot of static and it is also on speaker phone. how do I fix this?

Most likley not a phone issue since you say its a line.
Call your carrier (i.e Bell, AT&T ect) whom supplies your phone lines to fix it.

Had one just like i t with same problem. I used a blu-tooth earpiece till i found resolve. Its your speakers that are bad. I know it sounds out there, literally, as everything else works,even speaker phone. I took mine in to a cell phone shop and they replaced speakers and it cost me 50.00 to fix it. Well worth the money!Hope this helps!

try turning the speaker volume down by adjusting the volume with the volume switch on the side of the phone during a call,
otherwise it is just maybe a bad speaker

the driver inside needs to replaced as the magnet broke or the driver got bent..it may be cheaper to order a new speaker complete from them.

contact your provider.

You might try replacing the connection cables. Old cables can cause the problem you have experienced.

You had a bad speaker and need to be replaced

Check to be sure you ran the audio wires away from the power supply wiring. I always run the audio down the Passenger side and power to amp on Drivers side. Also check you Ground, and be sure you have metal to metal, no paint obstructing the power.

Time for a new phone. Most likely there are some bad solder connections and they could be anywhere. A 2 year old battery should not cause such severe problems so I'd spend the money on a new phone before a new battery.

I think if you can´t undestand what the other person is sayin, and you think is working fine, the problem could be at the speaker, check if the speaker is clear of dirty or sand or any thing that has not to be there. If you find any dirty or sand on you speaker, try to clean with a brush and giving some little knocks with a piece of steel Good luck