Bought a samsung Galaxy Z flip 4. 2 months after utilizing the phone. The screen cracked after opening the device. A yellow bar went down the left side and the middle of the screen became black. No one will repair these flexible screens locally so I sent it in for repair with samsung. Initially the cost was a little over 200. Fine I'll pay it. The repair center comes back and states that the phone had an unauthorized repair done to it and all the sudden the motherboard was bad and they added an LCD assembly charge to the phone with a charge of over 700 dollars. They said the phone was out of warranty because of the "unauthorized repair and was not covered". There literally is no one else in the area that will repair these phones and no modifications were done to it other than adding a phone case and a screen protector. They also stated the phone wouldn't power on, which it did when I sent it in. They told me they would have another technician look at it after arguing with them for a while. Then they just sent the phone back without any response. I ended up having to pay the exorbitant fee which should have been at least partially under warranty. Don't buy their flexible phones and don't bother calling customer service.