phones need to go to the settings section (search for "OTG" - (turn on OTG power) to use them normally. Upgraded double wireless microphones system which can support simultaneously picking up sound from 2 parties.PLUG AND PLAY & ULTRA LOW LATENCY: Innovative professional wireless lavalier recording microphone is much easier to set. No adapter, bluetooth or application needed. Just get the receiver into your devices, then turn on the portable mic, these two parts will pair automatically. Recording microphone using real-time auto-sync technology, 2.4g signal transmission super low latency(less than25ms).OMNIDIRECTIONAL SOUND RECEPTION: Lapel microphone wireless equipped with high density spray-proof sponge and high-sensitivity microphone, our device clearly records every detail of the sound regardless of surrounded environment. Our noise reduction technology cuts off any noise interference while recording so as to ensure the sound quality.65FT AUDIO RANGE & 6H WORKING TIME : Wireless lavalier mic has a stable audio signal, the longest wireless transmission distance can reach 65ft and the high-quality chip can bring more stable transmission. Mini wireless microphone transmitter has built-in rechargeable battery, which can be charged for 1.5 hours and work for up to 6 hours.USE WHILE CHARGING & WIDELY USED : Clip on microphone is suitable for interviewing, online conferencing, podcasting, video log, live streaming, live streaming, TikTok, blog, podcast, interview, and other sound picking up. Receiver is equipped with a direct charging interface for mobile phones, allowing for seamless recording and phone charging without worrying about battery issues.