Believe it or not but are still two headset standards (headphone + microphone) for cellphone: TRRS_Standards

• OMTP: old Nokia (and also Lumia starting from the 2nd gen^[15]), old Samsung, old Sony Ericsson (2010 and 2011 Xperia’s), old Wiko (2012-)
• CTI: Apple, HTC, latest Nokia, latest Samsung, latest Sony (2012+), latest Wiko (2013+), most Android phones