Tag - cellphone headset

Standard of cellphone headset jack

At present, there are two international standards for cellphone handset jacks: OMTP and CTIA. In general, most international manufacturers use CTIA standards, such as iPhone headsets in the United States, Hong Kong and other international markets, while mobile phone headsets in China need to support the OMTP standard. 1.) CTIA: Pin connection from left from right: left – right – ground – microphone. It is also the most popular in the market. Mobile phones, such as:  Apple (full range), Xiaomi [...]