| Operating System | Linux Based | Linux Based | Linux Based | Linux Based | Android 5.1 | Android 5.1 | Android 7.1 |
| LCD display | 3.7" 360 x 160 Pixels Graphical Display | 3.7" 360 x 160 Pixels Graphical Display | 4.3" 480 x 272 Pixels Color Display | 7" 800 x 480 Pixels Color Display | 7" 1024 x 600 Capacitive Touch Screen | 7" 1024 x 600 Capacitive Touch Screen | 8" 1280 x 800 Capacitive Touch Screen |
| LCD Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| LED Indicators | √ | √ | √ | √ | √ | √ | √ |
| Line Keys | 8 | 8 | 10 | 0 | 0 | 0 | 0 |
| Memory Keys | 21 (3 Pages of 7 Keys) | 21 (3 Pages of 7 Keys) | 27 (3 Pages of 9 Keys) | 29 Touch Keys | 27 Touch Keys | 27 Touch Keys | 27 Touch Keys |
| USB Port (2.0 Compliant) | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| Ethernet Port | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet | Dual-port Gigabit Ethernet |
| Handset Port (RJ-9) | √ | √ | √ | √ | √ | √ | √ |
| Headset Port (RJ-9) | √ | √ | √ | √ | √ | √ | √ |
| Expansion Module | Yealink EXP50 | Yealink EXP50 | Yealink EXP50 | Yealink EXP50 | Yealink EXP50 | Yealink EXP50 | x |
| (Accessory, purchased separately) | | | | | | | |
| External Yealink AC Adapter (Optional) | AC 100~240V Input and DC 5V/1.2A Output | AC 100~240V Input and DC 5V/1.2A Output | AC 100~240V Input and DC 5V/2A Output | AC 100~240V Input and DC 5V/2A Output | AC 100~240V Input and DC 5V/2A Output | AC 100~240V Input and DC 5V/2A Output | AC 100~240V Input and DC 12V/1A Output |
| HD Voice | HD Handset, HD Speaker | HD Handset, HD Speaker | HD Handset, HD Speaker | HD Handset, HD Speaker | HD Handset, HD Speaker | HD Handset, HD Speaker | HD Handset, HD Speaker |
| Speakerphone | Full Duplex | Full Duplex | Full Duplex | Full Duplex | Full Duplex | Full Duplex | Full Duplex |
| Wideband Codec | G.722, Opus | G.722, Opus | G.722, Opus | G.722, Opus | G.722, Opus | G.722, Opus | G.722, Opus |
| Narrowband Codec | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC | G.711(A/µ), G.729A/B, G.726, G.723.1, iLBC |
| HAC Handset | √ | √ | √ | √ | √ | √ | √ |
| Acoustic Shield | √ | √ | √ | √ | √ | √ | √ |
| Yealink Noise Proof | x | x | x | x | √ | √ | √ |
| PoE | √ | √ | √ | √ | √ | √ | √ |
| Headset | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 | USB/Bluetooth/RJ9 |
| Bluetooth | √(Via Yealink BT40) | Built-in Bluetooth 4.2 | Built-in Bluetooth 4.2 | Built-in Bluetooth 4.2 | Built-in Bluetooth 4.2 | Built-in Bluetooth 4.2 | Built-in Bluetooth 4.2 |
| Wi-Fi | √(Via Yealink WF40/WF50) | Built-in(2.4G and 5G) | Built-in(2.4G and 5G) | Built-in(2.4G and 5G) | Built-in(2.4G and 5G) | Built-in(2.4G and 5G) | Built-in(2.4G and 5G) |
| HDMI | X | X | X | X | x | x | √ |
| Foot Stand | 1 Adjustable Angle | 1 Adjustable Angle | 1 Adjustable Angle | 1 Adjustable Angle | 1 Adjustable Angle | 1 Adjustable Angle | 1 Adjustable Angle |
| Wall Mountable | √ | √ | √ | √ | √ | √ | x |
| Corded-Cordless Phone (via DD10K) | √ | √ | √ | √ | √ | √ | √ |
| Content Sharing | √ | √ | √ | √ | √ | √ | √ |
| Door Phone Integration | X | X | X | X | √ | √ | √ |
| Camera | X | X | X | X | X | 2 Mega-pixel, Adjustable, Plug&Play | 2 Mega-pixel, Adjustable, Plug&Play |
| Video Resolution | X | X | X | X | x | 720p@30FPS HD | 1080p@30FPS Full-HD |
| Video Codecs | X | X | X | X | x | H.264、H.264HP、VP8 | H.263、H.264、H.264HP、VP8 |
| SIP Accounts | 12 | 12 | 16 | 16 | 16 | 16 | 16 |
| N-way Conferencing | 5 | 5 | 10 | 10 | 10(up to 2 video calls) | 10(up to 2 video calls) | 10(up to 2 video calls) |
| 5-way Video/Audio Mixed Conferencing | X | X | X | X | x | √ | √ |