Squeal on phone - Vtech 5.8GHz Cordless Phone with Digital Answering System

The bearings are probably worn out.

It may be you harmonic balancer moved and rubbing on your timing cover or do you have a manual or auto transmittion

Is it a tire squeal or brake squeal?If it is brake squeal put high temp synthetic brake lube grease behind the brake pads to reduce/remove the brake squeal.This allows the pads to sit on a bed of grease and will not vibrate at the frequency which produces the squeal.

Just for testing, a few seconds, will the vehicle start and run w/o the belt? Have a helper work the throttle, is the sound gone? If problem not the belt, check the belt driven accessory. Sometimes you can use a long metal rod of some kind, with belt on, one end of the rod touches accessory housing, the other end goes on that bone behind your ear, helps to magnify the sound. I guess you could use a mechanics stethoscope to do the same thing. Have helper work the throttle while you listen to each. Don't get tool or anything caught in belt. This is a serpentine belt, I haven't looked?
Maybe an accessory trying to freeze up or bad bearing? I can't think of anything else at the moment?

To my recent experience the keyboard had to be replaced. It had something spilled on it unbeknown to the owner, making it squeal. I ordered a replacement, installed it and viola! No more squeal.

You need new brake pads . it has a metal tip that squeals on the rotor when they are worn.

Check the battery on all the phones then make sure they are all programmed with different extension numbers. If the battery has been dead and you have had a power outage then it may have reset the phone to factory default extension 11.

Try calling up Samsung Mobile. If it's a known problem, you'll be able to ship it back to them and have them flash/fix it.

ceramic discs so they squeal until they’re warm

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