Hi guys I'm on my second new HTC One handset since the 19th March and I'm beginning to lose hope! During a call if I use my speakerphone the person on the other end of the line experiences a loud, intermittent, feedback/interference noise. This only happens when I'm on speakerphone. Phones4u who I got the phone off advised me to do a hard reset which I did having no effect. They've replaced the phone with a brand new handset which I've received today but it has the same problem as the first. I've called HTC tech support and the guy basically said to send it back to Phones4u and if the 3rd phone has the same issue to call them back and they'd report it to their seniors. Is there anything I can do? Has anyone else experienced this problem? Any advice is greatly appreciated! Thanks.