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Home > SMS MODEM > YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
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  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster

YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster

SKU:
SMS modem is connected to computer or other device through USB interface and sends and receives text messages over the GSM network.Built-in wireless 4g modules can insert into 16 SIM cards to send and receive sms in bulk.
(Friendly Reminder: Please indicate the intended country of use when placing your order. Failing such indication, the corresponding frequency band model will be allocated based on the shipping address country)

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  • PORTS:
    16 ports (SMS)
  • 4G Model:
    EC25 (Region Specific Global Coverage)
    EC20 (Only INA/RUS Availability)
    EC200A (Regional Models Exclude US/CA/JP)
  • Price Tier:
    1 Unit Price (Qty 1)
    2+ Units Price (Tip: Min Qty 2 | No Shipment Otherwise)
  • Power Adapter:
    EU
    EU
    CN/AU
    CN/AU
    CN
    CN
    US(1)
    US(1)
    US(2)
    US(2)
    UK
    UK
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  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
1/1
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • 4G 16 Ports GSM Bulk Send SMS Modem IMEI Change Free Software SMS Caster
  • YX 4G LTE 16 Ports Bulk Send SMS Modem IMEI Change SMS Caster
  • Description
  • Product Details
  • Frequency band
  • Package
Brand Name YXCALL
PORTS 16
Network 4G LTE,Include GSM, CDMA, WCDMA
Frequency 700-2700Mhz
Sim slot 16
Warranty 12 months
Module EC25/EC20/EC200A
(Please refer to the "Frequency Band" interface for specific information)
Interface Type USB
SMS Send Speed Approximately 3600 text messages per hour per port
Operation System Win all, Linux, android

Function

STK / AT Command / TCP/IP / Data / SMS / IMEI / MMS / Email / GPRS / GPS / USSD

GPRS protocol

GPRS Multi-slot Classes 1~12(default is Class 12),GPRS format CS-1,CS-2,CS-3,CS-4 ​PPP/PAP ​TCP/UDP/FTP/PPP/HTTP/NTP/MMS/SMTP/PING/MQTT

SIM interface

Default is 2FF Mini SIM (15mm*25mm), Optional conversion to 1FF (big size IC card)

Free Software SMS Caster
Support With instruction manual and technical support (For example, remote technical assistance)
Shipping
method
Support DHL, UPS, FEDEX, EMS, 4PX Cainiao standard logistics and dedicated lines (some countries have dedicated lines logistics, Specific consultation with customer service)
Tip: (1) Express delivery is faster than dedicated lines, but customers need to handle customs clearance and tax payment, and there will be logistics trajectory updates throughout the process.
(2) Dedicated line logistics is slower, but includes customs clearance and tax payment, and is delivered directly to the home. The logistics trajectory updates will only be available after the package arrives at customs clearance and is handed over to the local logistics provider.
Payment method Support payment methods such as USDT, PayPal, credit card, TT, etc (Pay with USDT and there are no additional transaction fees, so 3% discount on the product price is given)
Please consult customer service for USDT address,Other payment methods can be redirected to the checkout page for online payment
Ordering Process Payment for the product you need to order, we will arrange for stock testing after confirming the accuracy of the delivery information with you. We expect to arrange shipment within 2 days and provide you with package picture and logistics tracking number for tracking. Customer service will send message to remind you of tax payment and logistics delivery. If you need technical support after receiving the goods, please leave a message to our customer service personnel, and we will arrange for a technician to assist
Customer service contact information Whatsapp: +8615220722893
Emai: yx@yxinternet.com
Telegram: @YXwendy
Teams: yuexun@yx19999.net

YX 16 port SMS Modem Detail display image

Why choose it:
● 16 SIM Slots: Send/receive 16x faster with simultaneous SIM operation.
4G LTE Speed: 3600 SMS/hour per port—ideal for urgent alerts or promotions.
IMEI Flexibility: Avoid carrier restrictions and boost delivery rates.
Free SMS Caster: Schedule, track, and automate campaigns effortlessly.
Plug & Play: USB connectivity—works instantly on Windows, Linux, or Android.

 

Cutting-Edge Features & Flexibility
EC25/EC20/EC200A Modules: Versatile 4G module options for tailored network compatibility (check "Frequency Band" specs for details).
Free SMS Caster Software: Simplify bulk messaging with AT commands, GPRS Class 12 optimization, and support for TCP/IP, MQTT, HTTP, SMTP, and USSD.
SIM Adaptability: Default 2FF Mini SIM slots + optional 1FF converter for legacy IC cards.


Enterprise-Grade Reliability

Multi-Protocol Mastery: Supports FTP, NTP, PING, PPP/PAP, and MMS/email integration for diverse communication workflows.
Cross-Platform Compatibility: Works flawlessly on Windows, Linux, and Android systems.
Robust Build: Compact USB design with 12VDC power adaptability and wide operating temperature tolerance.


Why YXCALL?

Scalable Efficiency: Optimized for SMS marketing, emergency alerts, surveys, and IoT applications.
Cost-Saving: Reduce per-message costs with high-density SIM management and LTE efficiency.
12-Month Warranty: Backed by a manual + 24/7 technical support for uninterrupted operations.

YX 16 port SMS Modem Package display image

Key Benefits:

→ Massive Scale: Replace 16 devices with one compact modem.
→ Zero Monthly Fees: Only pay for SIM cards—no subscriptions!
→ Global 4G Support: 700-2700MHz bands for 100+ countries.


Perfect For:

● SMS marketing agencies & e-commerce
● High-volume OTP/verification systems
● Emergency alerts & customer notifications
● Telecom hubs & IoT data solutions


How It Works:

1. Plug into USB.
2. Load 16 SIMs.
3. Launch Your Campaign!

Free Software | One Year Warranty | Technical Support


Dominate Bulk SMS with 16X Power!
Includes SMS Caster & EC25/EC200A Modules.


Why Wait?
Auto-SIM rotation to prevent carrier blocks.
Developer-friendly AT command support.
Durable design for 24/7 operations.
Need More Info?(Confirm network compatibility with your region. Contact customer service for product images or queries!)
Whatsapp: +8615220722893
Emai: yx@yxinternet.com
Telegram: @YXwendy
Teams: yuexun@yx19999.net


SMS Caster bulk Send Software Operation Demonstration

For detailed product operation, please refer to the relevant manual or contact customer service for assistance
Display of bulk SMS software interface


About Us

YxInternet is a professional supplier specializing in consumer electronics, smart devices, and lifestyle products. With years of experience in global trade and a strong supply chain network, we provide businesses and end-users with reliable products at factory-direct prices.

Our mission is to bridge quality manufacturing with global buyers, making cross-border sourcing easier, faster, and more transparent. From product selection to quality control, and from fast delivery to after-sales support, YxInternet ensures every order meets high expectations.

        

Why Choose Us

  • Extensive Product Range:From smart electronics to innovative gadgets, we cover a wide range of categories to meet various market demands.
  • Direct-from-Manufacturer Pricing:We work directly with reliable factories, ensuring competitive wholesale prices with no hidden costs.
  • Strict Quality Control:Every product goes through multi-level quality checks, from factory audits to pre-shipment inspections, guaranteeing what you receive matches your expectations.
  • Efficient Logistics Network:With global shipping partnerships, we offer fast and trackable delivery to over 100 countries, keeping your orders on time.
  • Dedicated Customer Service:Our professional team is ready to support you before, during, and after your purchase, ensuring your sourcing experience is smooth and hassle-free.




FAQ

1.Who are we?

YxInternet is a trusted supplier offering consumer electronics, smart devices, connecting global buyers directly with high-quality factories.

 

2.How can we guarantee quality?

Factory audits to verify production capabilities

Product sampling and testing

Pre-shipment quality checks to confirm product specifications

 

3.What can you buy from us?

We offer a wide range of products, including:

SMS Modem

SMS Dongle

Voip gateway

SMS gateway
eSIM Gateway
IP Phone
Modules/Accessories

Customized products for bulk orders

 

4.Why should you buy from us instead of other suppliers?

Direct factory pricing with no middleman markup

Comprehensive quality control from production to delivery

Flexible order solutions for both retail and wholesale

Fast global shipping and reliable logistics

Dedicated after-sales support to resolve any issues

 

5.What services can we provide?

Product sourcing and customization

OEM and private label support

Product quality inspections

Global shipping coordination

After-sales support and warranty services

1、Overview
SMS modem is a type of modem specifically designed for sending and receiving text messages. It can be connected to a computer or other device through a serial interface and send and receive text messages through the GSM network. 

They are widely used in various automation systems, remote monitoring, alarm systems, and other fields to achieve remote communication and data tra
nsmission.




2、Product Brief

For local connection to the computer using the COM port to send SMS, no network required;

Equipment inserted SIM card and connected to the computer, the computer loaded with COM modem SMS software (this type of software on the market there are also many, the specific function depends on the software, we give our customers free to use SMS Caster), you can send SMS directly through the SMS Caster (The software unlimited hours of usage and unlimited number of ports);
COM port modem using AT commands to control the modem to send SMS, most of these COM modems are similar, the software can be basically universal, does not support API, If want can develop software yourself.
Our SMS modem although supports linux, but we do not have driver or software can provide support, so customers need to solve the related support problems, at the same time, for the application of linux, we only provide hardware support for the device and after-sales inspection only check the normal work in the windows system is normal!

3、Appearance



8/16/32/64 Ports

1 USB Serial Port
1 Power Interface (DC 5V,AC 100-240V)
1 Power Switch
8/16/32/64 Independent switch

8/16/32/64 SIM card slots
8/16/32/64 Antennas

8/16/32/64 LED lights

4、Specification

2G: M26/ M35;

3G:UC20/ UC200T;
4G: EC25/ EC20/ EC200A

GSM: 850/900/1800/1900MHz

3G WCDMA: 850/900/1700/1900/2100MHz
4G LTE: 700-2600MHz

Options:8/16/32/64 x SIM card(big/small) slots 

Speed: 2G: 800-1000 sms, 3G:2500-2800 sms, 4G:2500-3600 sms per port per hour Send and receive SMS,MMS

Input voltage: 100 to 240V
Working temperature: -20 to +60 degrees Celsius
Storage temperature: -25 to +70 degrees Celsius
Double tone multi-frequency function(DTMF)

5、Function

1. Directly connect to your computer, the main function depends on the software, such as SMS Caster which we provide for free (you can download it from our website and check the specific function):

    Support batch mass SMS, flash message, long SMS, MMS (need to have their own software support);
    Support importing contacts and importing messages directly (by importing forms);
    Support timed tasks, support auto-reply (need to set keywords);
    Support multi-task sending (send by port), support intermittent sending (you can set how many seconds to lock after sending how many);
    Export unfinished tasks, etc.
2. In addition to SMS-related functions, other features such as call, receive SMS, send USSD, change IMEI, etc. all need to be supported by other software or AT commands.we only provide AT command manual, do not provide other development support.
Remarks: Please check the product manual for other specific functions.





▼SMS Caster interface operation demonstration



6、FAQ
Q1. Does SMS modem support custom calling number/sender ID when making calls or sending text messages?
A:The device uses a SIM card, which naturally displays the SIM card number when making calls or sending text messages. This is determined by the SIM card itself and the SIM card operator, and generally does not support custom calling numbers/sender IDs. In VOIP and network SMS services, only the operator's routing (CLI and direct connection) may be supported!

Q2. Does SMS modem support detecting surrounding mobile phone information, listening to surrounding calls, tracking/tracing mobile phones/calls/SMS, IMSI Catcher and other detection functions?
A:This type of feature has no connection with our product and is not supported!

Q3. Does the SMS modem support wifi or multi wifi functions to provide data internet access and other functions?
A:The functions related to wifi/data internet are not related to any of our devices and are not supported!

Q4. Does GOIP, MOIP, or SMS modem support functions such as MMS, picture SMS, voice SMS, video calls, etc?
A:SMS modems can support MMS (customers need to have their own software support, we do not provide MMS software), and the latest version of YX GOIP/MOIP can also support sending MMS. Other products do not support it.

Q5. Does the modem have an API?
A:The modem does not have an API, while the YX series GOIP/MOIP has HTTP APIs for sending/receiving SMS and USSD, supporting customer developed software to call through HTTP; DBL's GOIP does not have an API that can be directly used, but if the customer has their own server, after installing a GOIP SMS sending server software, they can use the SMS HTTP API.

Q6. Is there a device that supports receiving and forwarding SMS messages?
A:SMS modem can receive SMS messages, but it does not support forwarding. At the same time, the software we provide does not support viewing which port receives SMS messages;YX GOIP/MOIP can receive information and forward it to email/HTTP address/SIP server/other phone numbers or HTTP API directly from the device (commonly used are email or HTTP API retrieval)

Q7. Can the device support international roaming and what should be noted?
A:1. The SIM card needs to be able to roam to the target country. 2. It is necessary to understand the frequency band of the target country, and the device needs to be matched with the frequency band of the target country (if there are too many frequency bands in the target country, it can also be determined which operator in the target country can provide roaming signals for the SIM card, and the device needs to be matched with the frequency band of the operator that provides roaming signals)

Q8. What is the SMS sending speed of the modem?
A:2G modem: 1500 per port per hour; 3G/4G modem: 3600 per port per hour (the above standard testing environment may vary depending on the device environment)

Q9. Modem be used in XX country (or a certain operator)?
A:The product is not related to which country or carrier it is used in. As long as the device's frequency band matches the local (or carrier's) frequency band, it can be used!

Q10. What is the difference between 2G/3G/4G devices?
A: 2G/3G/4G modem send SMS at different speeds, but there is no difference, but in many countries, GSM signal is facing elimination, so you need to choose according to the local situation

Q11. Can the modem send USSD?
A: No, it is not recommended, although the cat can send USSD through AT command, but this AT command relies on manual operation, there is no way to use it in large quantities directly, if the customer has its own software support then it is possible!

About IMEI,operators will recognize that one IMEI is one cell phone, so when the card is abnormal,it may be accompanied by IMEI being blocked, the phenomenon is usually that the device can not be registered or can not send SMS or can not make a call, etc., but the card inserted into the cell phone is normal, this is the case that the IMEI is blocked, and the IMEI can be replaced!


Because the 4G frequency band is different in different countries or regions, when placing an order, please indicate the country in which the product is used. If there is no indication, we will select the corresponding frequency band model based on the country where the shipping address is located.

The EC20/EC200A module and is not suitable for use in the United States, Canada, or Japan. If you need to use it in these countries, Please consult customer service to recommend other 4G modules for you, such as EC25.


Product Feature

Name

4G LTE Dongle Modem

communication interface

USB

Chipset

Quectel EC20 / EC200A / EC25

Function

STK / AT Command / TCP/IP / Data / SMS / IMEI / MMS / Email / GPRS / GPS / USSD

Frequency

EC25-EUX /EC200A-EU:(Asia, Europe,Africa, the Middle East,Southeast Asia, Vietnam, Myanmar, Laos, Cambodia, Malaysia, Singapore, Russia)

​LTE FDD: B1,B3,B5,B7,B8,B20,B28
​LTE TDD: B38,B40,B41
​WCDMA: B1,B5,B8 (900/2100MHz) ​
GSM: B3,B8 (900/1800MHz) ​

EC25-AFX :(United States and Canada)
LTE FDD: B2/B4/B5/B12/B13/B14/B66/B71 ​
WCDMA:B2/B4/B5 (1900,1700,850MHz) ​

EC25-AUX /EC200A-AU:(Australia, New Zealand and Latin America, Mexico, Peru, Colombia, Brazil, Chile, Argentina, Dominican Federation, Venezuela, Honduras, Guatemala, Nicaragua, Costa Rica, Panama, Cuba, Guyana, Bolivia, Paraguay, Uruguay, etc)
LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28/B66 ​
LTE TDD: B40
​WCDMA: B1/B2/B4/B5/B8 (850,900,1700,1900,2100MHz) ​
GSM:B2/B3/B5/B8 (850,900,1800,1900MHz) ​

EC25-J:(Japan)
​LTE FDD: B1/B3/B8/B18/B19/B26
​LTE TDD: B41 ​
WCDMA: B1/B6/B8/B19 ​

EC20 / EC200A-CN:(China, India)
LTE FDD: B1/B3/B5/B8
​LTE TDD: B34/B38/B39/B40/B41
​WCDMA: B1/B5/B8 (900,2100MHz) ​
TD-SCDMA: B34,B39 (900,2100MHz) ​
EVDO CDMA: BC0 (800MHz) ​
GSM: B3,B8: (900,1800MHz)

Operating System

Win all, Linux, android

SIM interface

Default is 2FF Mini SIM (15mm*25mm), Optional conversion to 1FF (big size IC card)

Working voltage

DC 5V

TTL voltage

DC 3.3V

OEM / ODM

Bulk Customization

Warranty

One Year

●Modem
●Antennas *16
●USB Cable
●Power Adapter 
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