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Zoiper is a reliable and battery-friendly VoIP softphone that lets you make high-quality voice calls over Wi-Fi, 3G, 4G/LTE, or 5G networks. Whether you’re a remote worker, digital nomad, or VoIP enthusiast, Zoiper is the go-to SIP client for smooth and secure communication — without any ads. 🔑 Core Features: 📞 Supports both SIP and IAX protocols 🔋 Low battery usage with excellent stability 🎧 Bluetooth, speakerphone, mute, hold 🎙️ HD audio quality — even on older devices 🎚️ Wideband audio support (including G.711, GSM, iLBC, Speex) 📹 Video calls (*with subscription) 🔐 Secure calls with ZRTP and TLS (*with subscription) 🔁 Call transfer & call waiting (*with subscription) 🎼 G.729 and H.264 codecs (*with subscription) 🔲 Multiple SIP accounts for flexibility (*with subscription) 🎤 Call Recording (*with subscription) 🎙️ Conference Calls (*with subscription) 📨 Presence support (see if contacts are available or busy)(*with subscription) 🔄 Auto Answer for automatic pick-up of incoming calls (*with subscription) 📲 Reliable incoming calls with PUSH service (ensure calls are received even when app is in background) (*with subscription) 📊 Quality of Service (QoS) / DSCP support for better call quality in enterprise environments (*with subscription) 📞 Message Waiting Indicator (MWI) for voicemail notifications (*with subscription) 📲 Need reliable incoming calls at all times? Subscribe to Zoiper's PUSH service from within the app. This optional paid feature ensures you receive calls even when the app is closed — perfect for professionals and frequent travelers. 🔧 For Providers & Developers Distribute easily via oem.zoiper.com with automatic provisioning Need a custom-branded version or VoIP SDK? Visit https://www.zoiper.com/en/voip-softphone/whitelabel or zoiper.com/voip-sdk ⚠️ Please Note Zoiper is a standalone VoIP softphone and does not include a calling service. You must have a SIP or IAX account with a VoIP provider. Do not use Zoiper as your default dialer; it may interfere with emergency calls (e.g. 911). Only download from Google Play — unofficial APKs may be unsafe.