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Yealink phone support

Yealink T4 Series

Well-rounded SIP office phones with color screens, Gigabit Ethernet and USB. Support for all 17 Yealink T4 Series models, 6 current and 11 discontinued: datasheets, user and admin guides, firmware, specifications and how-to articles.
17 models6 current11 discontinued

Current models

Current T4 Series models

Select your model for specifications, manuals, firmware and how-to articles.
Yealink SIP-T42U
T4 Series

SIP-T42U

Well-rounded SIP desk phones

Support & downloads
Yealink SIP-T43U
T4 Series

SIP-T43U

Feature-rich SIP office phone

Support & downloads
Yealink SIP-T44U
T4 Series

SIP-T44U

Well-rounded SIP office phone

Support & downloads
Yealink SIP-T44W
T4 Series

SIP-T44W

Feature-rich Wi-Fi SIP Phone

Support & downloads
Yealink SIP-T46U
T4 Series

SIP-T46U

Productivity-enhancing SIP office phone

Support & downloads
Yealink SIP-T48U
T4 Series

SIP-T48U

Advanced SIP Office Phone

Support & downloads

Discontinued

End-of-sale & end-of-life T4 Series models

Documents and firmware are still available below. See the EOL center for dates and recommended replacements.
EOL center →
Yealink SIP VP-T49G
T4 SeriesEnd of Life

SIP VP-T49G

Flagship level desktop video phone

Support & downloads
Yealink SIP-T40G
T4 SeriesEnd of Sale

SIP-T40G

Ultra-elegant business IP phone

Support & downloads
Yealink SIP-T40P
T4 SeriesEnd of Sale

SIP-T40P

Cost-effective enterprise level IP phone

Support & downloads
Yealink SIP-T41P
T4 SeriesEnd of Life

SIP-T41P

Multi-function paperless IP phone

Support & downloads
Yealink SIP-T41S
T4 SeriesEnd of Sale

SIP-T41S

Ultra-elegant business IP phone

Support & downloads
Yealink SIP-T42G
T4 SeriesEnd of Life

SIP-T42G

Multi-function paperless Gigabit IP phone

Support & downloads
Yealink SIP-T42S
T4 SeriesEnd of Sale

SIP-T42S

Ultra-elegant business IP phone

Support & downloads
Yealink SIP-T46G
T4 SeriesEnd of Life

SIP-T46G

High-end color screen paperless IP phone

Support & downloads
Yealink SIP-T46S
T4 SeriesEnd of Sale

SIP-T46S

Ultra-elegant business IP phone

Support & downloads
Yealink SIP-T48G
T4 SeriesEnd of Life

SIP-T48G

High-end large screen touch control IP phone

Support & downloads
Yealink SIP-T48S
T4 SeriesEnd of Sale

SIP-T48S

Ultra-elegant business IP phone

Support & downloads

Resources

Browse all Yealink resources

DatasheetsUser GuidesAdmin GuidesQuick Start GuidesFirmware & Release NotesCompatibilityDeploymentTechnical TopicsKnowledge Base

Other Yealink series

T2 SeriesT3 SeriesT5 SeriesT7 SeriesT8 SeriesVP SeriesW Series (DECT)CP Series (Conference)MP Series (Teams / Zoom)AX Series (Wi-Fi)Accessories

Need help with your Yealink phones?

The Tech Team™ can provision, update and troubleshoot your Yealink phones, and move your office onto smplVoice cloud voice.

Talk to a technician (800) 943-7675

Yealink and Yealink product names are trademarks of Yealink Network Technology Co., Ltd. Product information, images and documents are published by Yealink and provided here for reference by smplVoice. Firmware and documents are Yealink’s original, unmodified files.