Description
Need a desk phone that works without waiting for Ethernet drops or relying only on office Wi-Fi? The Yealink T74LTE (US) brings 4G VoLTE calling to a familiar desktop form factor. Insert a nano SIM, power it up, and the IMS account activates for business calls. You get HD audio with Smart Noise Filtering, Bluetooth 5 for headsets, dual-band Wi-Fi as backup, and a built-in battery that keeps you talking for up to three hours when power is interrupted. It is built for our customers who need reliable voice in places where traditional network wiring is slow, temporary, or unavailable.
While the 4G LTE cellular connection is the main feature of this phone, you can still use the T74LTE to connect to a SIP PBX/service via the ethernet/Wi-Fi connection.
The Telecom Spot Take
This phone is the practical choice when your team needs a real business desk phone that does not depend on a fixed internet/data line. Facilities managers and IT directors use it for construction sites, pop-up offices, retail counters, remote locations, or backup lines. The nano SIM slot and automatic IMS activation mean you can place it wherever there is 4G coverage and power. The 3000 mAh battery and dual connectivity options (Ethernet, Wi-Fi, or cellular) give you redundancy without adding extra hardware. Audio stays clear with Acoustic Shield and Smart Noise Filtering, even in busier environments. For customers who want the look and features of a modern Yealink desk phone without the cabling project, this is the model that removes the network wait.
Key Features
- Nano SIM VoLTE for plug-and-play connectivity – Drop in an activated nano SIM and the phone registers the IMS account after power-on. No extra wiring required. Supports US bands B2, B4, B5, B12, B13, B17, and B66 so it works with major carriers.
- Battery backup for continuity – 3000 mAh rechargeable lithium-ion battery delivers up to 3 hours of talk time and 8 hours of standby in ideal conditions. Useful when power drops or you need to move the phone for a better signal.
- Clear audio for every call – Optimal HD Voice on the handset and speaker, Acoustic Shield, Smart Noise Filtering, and a full-duplex hands-free speakerphone with AEC. The handset is Hearing Aid Compatible (HAC). Codecs include EVS, Opus, G.722, and more.
- Flexible network options – Built-in dual-band 2.4 GHz / 5 GHz Wi-Fi (IEEE 802.11a/b/g/n/ac) plus a 100M Ethernet port. Use 4G as primary and switch to Wi-Fi or Ethernet when available. Bluetooth 5 supports wireless headsets and mobile contacts sync.
- Business phone features on Linux 6.1 – Up to 16 accounts (including 1 IMS), 6-way conferencing, SMS, E911 emergency calling, BLF, call park/pickup, and XML/LDAP phonebooks. 10 line keys with LED support up to 50 DSS keys across pages.
- Security and management tools – TEE hardware encryption, TLS 1.3, SRTP, WPA2/WPA3, and auto-provisioning via FTP/TFTP/HTTP/HTTPS. Browser, phone, or mass deployment configuration keeps IT work light.
- USB and expansion ready – USB-A port for USB headsets, call recording to a flash drive, or the EXP55 expansion module. RJ9 ports for handset and headset. Optional wall-mount bracket available.
Technical Specifications
| Category | Specification |
|---|---|
| Operating System | Linux 6.1 |
| Display | 4.3-inch color TFT, 480 x 272 resolution |
| Accounts | 16 accounts (contains 1 IMS account) |
| Cellular | Built-in nano SIM slot, VoLTE, bands B2, B4, B5, B12, B13, B17, B66 |
| Wi-Fi | Dual-band 2.4 GHz / 5.0 GHz, IEEE 802.11a/b/g/n/ac |
| Bluetooth | Bluetooth 5 (headset and mobile contacts synchronization) |
| Audio | HD handset and speaker, HAC handset, Acoustic Shield, Smart Noise Filtering, full-duplex speakerphone with AEC; codecs EVS, Opus, G.722, PCMA, PCMU, G.729, G.729A, G.726, G.723.1, iLBC, AMR, AMR-WB |
| Conferencing | 6-way |
| Line / DSS Keys | 10 line keys with LED (up to 50 DSS keys, 5 pages) |
| Ethernet | 1 x 100M Ethernet port (WAN/LAN) |
| USB | 1 x USB-A (2.0), 5 V / 500 mA; supports USB headset, call recording, EXP55 expansion module |
| Headset / Handset Ports | 1 x RJ9 (4P4C) handset, 1 x RJ9 (4P4C) headset |
| Security | TEE hardware encryption, TLS 1.3, SRTP, WPA2/WPA3, AES256 config encryption |
| Battery | 3000 mAh rechargeable lithium-ion, 3.76 V, 10.8 Wh; up to 3-hour talk / 8-hour standby (ideal conditions) |
| Power | External Yealink AC adapter: AC 100-240 V input, DC 5 V / 2 A output; power consumption 1.5 W–3.5 W |
| Dimensions (W x D x H x T) | 234 mm x 212 mm x 85 mm x 55 mm |
| Color | Classic Grey |
| Operating Conditions | Temperature -10 to +45 °C (+14 to 113 °F); humidity 5–90% |
| Storage Temperature | -30 to +70 °C (-22 to +158 °F) |
| Package Contents | T74LTE (US) phone, handset with cord, stand, Quick Start Guide, power adapter; Ethernet cable and wall-mount bracket optional |
FAQ
Does the T74LTE (US) need a wired network to make calls?
No. With a nano SIM and 4G coverage it places VoLTE calls after the IMS account activates. You can also use the built-in dual-band Wi-Fi or the 100M Ethernet port as alternatives or backups.
How long does the battery last?
The 3000 mAh battery supports up to 3 hours of talk time and up to 8 hours of standby under ideal conditions. It is intended for short interruptions or temporary placement, not continuous all-day cordless use.
Which US carriers work with the supported bands?
The phone lists bands B2, B4, B5, B12, B13, B17, and B66. These cover major U.S. LTE networks. Confirm your specific carrier plan and SIM activation before deployment.
Can I connect a headset or expansion module?
Yes. Bluetooth 5 supports wireless headsets. The USB-A port works with USB headsets or the EXP55 expansion module. There is also a dedicated RJ9 headset port.
Is the phone suitable for mass deployment?
Yes. It supports auto-provisioning over FTP, TFTP, HTTP, or HTTPS, plus browser and phone-based configuration. TEE hardware encryption and standard SIP security features help with enterprise use.