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Android includes VoIP client (unless you have sponsored limted-feature firmware)
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Android includes VoIP client (unless you have sponsored limted-feature firmware)

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Sure, but can these VOIP clients use the native dialler etc?
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Sure, but can these VOIP clients use the native dialler etc?

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The problem is that lenovo cut off standard SIP dialer that is present in android sources.<br />
You can get one of few sip dialers, or flash cyanogen or aosp that have android dialer.
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The problem is that lenovo cut off standard SIP dialer that is present in android sources.
You can get one of few sip dialers, or flash cyanogen or aosp that have android dialer.

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iOS10 has Callkit which opens up a lot of the native iOS features for third party VOIP clients on iOS.<br />
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Does Android already do this? Or is this feature on its way too?
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iOS10 has Callkit which opens up a lot of the native iOS features for third party VOIP clients on iOS.

Does Android already do this? Or is this feature on its way too?

Callkit and Android comparison

Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets. Android's user interface is based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input. In addition to touchscreen devices, variants of Android are also used on notebooks, game consoles, digital cameras, televisions, automobiles and other electronics. Applications are usually developed in Java programming language using the Android software development kit (SDK), but other development environments are also available, including Delphi, Ruby and Visual Studio (using C++).

Android

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).