Textnow：https://www.textnow.com/downloads
Google Voice：https://voice.google.com/
textplus：https://textplus.com/download-text-plus-free-text-call-app
nextplus：（安卓）https://play.google.com/store/apps/details?id=me.nextplus.smsfreetext.phonecalls&hl=zh
（苹果）：https://apps.apple.com/us/app/nextplus-private-phone-number/id920869470
