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VoLTE is Voiceover LTE. It is an IP data transmission technology and does not require 2G/3G networks. All services are carried on 4G networks, and data and voice services can be unified on the same network. In other words, 4G networks not only provide high-rate data services, but also provide high-quality audio and video calls. The latter requires VoLTE technology.
| Main functions： | ||
| Voice call (hands-free calling) | Call chord music | Caller ID |
| Call transfer, call waiting | Call restrictions | Chinese and English text messages |
| Phone book | Business card holder | One-touch dialing |
| Support special SIM card and special card | Hold card, cell lock, lock net | Phone password protection |
| Chinese and English input method with association function | Supports echo suppression/sidetone cancellation | Support 2.4G WiFi |
| Main features： | ||
| 4G VOLTE high-definition voice, stable performance | Generous appearance, suitable for home and office | Lithium battery, long standby time |
| Preset IP number for convenient phone calls | Keys, proper fonts, convenient grip | WIFI hotspot coverage |
| Wireless access technology | TD-LTE/FDD/WCDMA/TD-SCDMA/GGE(GSM/GPRS/EGPRS) |
|---|---|
| Frequency band | GSM : 850/900/1800/1900 |
| TD-SCDMA：Band 34/39 | |
| WCDMA : Band 1/2/5/8 | |
| TD-LTE | Band 40/38/ 39/41 |
| FDD | Band 1/3/5/8 |
| Status Display | Supports displaying detailed 4G network information, including network quality, signal strength information, etc. |
| Phone function | Support voice dialing, support SMS, support address book |
| Software | Support lock frequency band, lock cell and lock physical cell, lock lock card and machine card interlock; support encryption card |
| Battery | 1000MAh lithium battery |
| Power supply | DC 2.0(15V,1A) |
| Data interface | 1 data interface, support wired internet |
| Voice | CSFB/VOIP/VOLTE，Handle + handsfree |
| Button | Numeric keys + navigation keys + shortcut keys + function keys; support for shortcut keys, including some WIFI setting shortcut keys, etc. |
| Antenna performance | 4G external antenna, gain ≥ 3dbi |
| WIFI | Wi-Fi 2.4GHz (2.4~2.4835 Ghz) Supports 802.11b/g/n, 300Mbps |
| SIM / USIM | SIM card and USIM card support SIM/USIM card with two different voltages of 1.8V and 3V |
| Display screen | 2.4 inch 128*64 monochrome display |
| Dialing function | Supports manual dialing, automatic dialing, PPPOE dialing, etc. |
| Configuration upgrade | Support local, platform firmware upgrade, configuration upgrade |
| software upgrade | Support local patch upgrade |
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