YXCALL 2G 4G 1-8 Port Suit Dongle with SMS Caster Bulk Send SMS Dongle High speed wireless Internet

Brand Name	YXCALL
PORTS	1-2-3-4-5-6-7-8 suit (Dongle,HUB, size card converter)
Network	2G GSM: 2G full frequency, Available in all countries where 2G GSM networks are still available 4G LTE: Include GSM, CDMA, WCDMA
Frequency	2G: 850/900/1800/1900MHZ (Attention: It is known that "Australia, South Korea, Japan, the United States, and Canada" have shut down 2G and cannot use it) 4G: 700-2700Mhz
Sim slot	1-2-3-4-5-6-7-8
Warranty	12 months
Module	2G: M26/M35:2G full frequency (GSM) 4G: EC25/EC200A/EC20 (Please refer to the "Frequency Band" interface for specific information)
Interface Type	USB
SMS Send Speed	2G: Approximately 1500 SMS per port per hour 4G: Approximately 3600 SMS per port per hour
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

YXCALL 1-8 Port Suit is a professional integrated solution combining Dongle, HUB and SIM Card Converter, designed for efficient data transmission and SMS management. It supports both 2G and 4G networks to adapt to different regional network environments, with powerful functions and reliable performance for business and personal use!

Detailed Description:

Core Highlights

Cutting-Edge Features for Seamless Scalability
● Dual SIM Formats: Supports standard 2FF Mini SIM cards (default) and optional 1FF IC card conversion—flexible for both modern and legacy systems using gsm modem for sms functionality.
● Enterprise-Grade Protocols: Works with STK, AT Commands, TCP/IP, SMS/MMS, GPRS, GPS, USSD, and advanced protocols like HTTP/FTP/SMTP/MQTT, making it an all-in-one platform for scalable gsm modems operations.
● GPRS Class 12 Optimization: Enables fast and secure data transfer using CS-1 to CS-4 encoding with PPP/PAP support and intelligent routing—ideal for business-critical gsm modem sms deployment.

Reliability & Versatility for Demanding Workflows
● Military-Grade Encryption: Ensures data security through RC4, Base64, and VPN (PPTP), providing safe, encrypted transmission in high-stakes environments that rely on gsm usb modem systems.
● Free SMS Caster Software: Includes full campaign automation, real-time monitoring, and easy cluster management for multi-device deployments using gsm modem for sms tasks.
● Global Compatibility: Engineered for continuous use in environments from 0–50°C, with 100–240VAC power input and 24/7 uptime—ideal for any 2g gsm sms dongle or 4G-based SMS infrastructure.

Note: Confirm frequency bands and module compatibility with your account manager for optimal 4G performance.

Perfect For:
● High-volume gsm modem sms marketing campaigns
● Real-time appointment reminders with automated alerts
● IoT projects and device verification systems using gsm usb modem communication
● Remote teams needing stable connectivity and scalable messaging

Launch in 3 Steps:
1. Plug into USB.
2. Load SIMs.
3. High-efficiency gsm modem for sms platform！

Free SMS Software | Technical support | Cut Costs, Boost Efficiency

Turn Any PC into a SMS Beast!

Customize Your Setup! Contact customer service (GMT+8: 9:00 AM - 6:00 PM) for bulk orders, SIM converters, or technical support.

Whatsapp: +8615220722893
Emai: yx@yxinternet.com
Telegram: @YXwendy
Teams: yuexun@yx19999.net 

For detailed product operation, please refer to the relevant manual or contact customer service for assistance

About Us

YxInternet is a professional supplier specializing in consumer electronics, smart devices, and lifestyle products—including gsm modems and wireless SMS solutions. With years of experience in global trade and a strong supply chain network, we provide businesses and end-users with reliable products such as gsm usb modem units and 2g gsm sms dongle devices 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—whether it's for a gsm modem for sms system or smart home accessory—meets high expectations.

        

Why Choose Us

• Extensive Product Range：From smart electronics and IoT tools to communication hardware like gsm modem sms platforms, we cover a wide range of categories to meet various market demands.
  
• Direct-from-Manufacturer Pricing：We work directly with verified factories, ensuring competitive pricing on gsm usb modem and other products—no hidden fees, no third-party markups.
  
• Strict Quality Control：Every product, including our 2g gsm sms dongle and multi-port modems, undergoes multi-level inspections—from factory audits to pre-shipment verification—guaranteeing reliable performance.
  
• Efficient Logistics Network：With international shipping partners, we offer fast, trackable delivery to over 100 countries, ensuring your gsm modems or smart devices arrive on time.
  
• Dedicated Customer Service：Our expert team is ready to support you before, during, and after your purchase, ensuring a seamless experience—whether for small orders or bulk gsm modem sms deployments.

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

2、Product Brief

▼SMS Caster interface operation demonstration

3、Appearance

​

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：Paired with UART, can be use 1/2/3/4/5/6/7/8/9 slots and more

Speed: 2G: 800-1000 sms, 3G:2500-2800 sms, 4G:2500-3600 sms per port per hour Send and receive SMS,MMS
UART ransmitting speed: 9600/19200/115200

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

5、Function

The main function of the product is High-Speed internet access and Internet of Things apply, SMS or voice notification reminders.

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.


About Change IMEI/Send USSD/Call/Put in PIN/PUK code(AT command)

● Change IMEI

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. put in "at+cgsn"//check IMEI

6.at+egmr=1,7,"IMEI number" change imei

for example: AT+EGMR=1,7,"453243242432134"

if you put in imei is wrong ,it will reset or keep old IMEI

7. put in "at+cgsn"//check new IMEI

● Send USSD

1. open Putty

2. click " Serial"

4. PUT IN "at&f"

5. put in "at+cusd=1,"USSD command""

for example:at+cusd=1,"*097#"

● CALL

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. put in "ate1"

6. put in "atd number;"

for example:atd 0976006161;

7. put in"ATH" hung off call

Put in PIN/PUK code

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. PUT in “at+cpin?” //check PIN status

If display “ready”=> it is ok, don’t need put in PIN code

If display ”SIM PIN” =>need put in PIN code

PUT IN ”at+cpin=PIN code”,
for example: at+cpin=1234

If display ”SIM PUK” =>need put in PUK code

PUT IN “at+cpin=”PUK code”,”NEW PIN code” ” ,
for example: at+cpin=”12345678”,”1234”

About UART HUB

If you need to use it in bulks, need to purchase UART HUB with TTL=3.3V. Our store has HUB with 4/8 channels available for purchase.

TTL UART USB2.0 HUB for Raspberry Pi/ Modem/ COM ports, provides more USB capability to your Pi, what's more, it features USB to UART converter for easy serial communication.

It can work with various versions of the Pi, and the size of the board is designed to perfectly fit the Zero / Zero W / Zero WH.

The product adopts 5V input power supply, compatible with USB power supply, and has an output TTL level of 3.3V. It can be directly connected to various GSM 4G LTE MODEMs, DONGLE, and microcontrollers.

USB HUB HAT Features
● USB Ports, compatible with USB2.0/1.1
● Onboard USB to UART, with enable / disable switch, convenient for Raspberry Pi serial debugging and avoiding conflict

6、FAQ

Q1. COM and port number is not corresponding, how do I know this port can not use?

A:Each module has lights:

 ● Light flash every 3 s, means normal registration card, can be used;

 ● Light flash every 1 s, it isn’t normal registration card, Need to check the card is installed correctly or not.

Q2. You have installed SIM cards,but device can’t read SIM card.
A:Please re-install SIM card and reboot it port, Installing sim card, the direction of the note card is correct.

Q3. COM port have error 2
A:Please reboot this port or re-install this port(Each module is removable).

Q4. Just began to normal to send, but send failure after a period of time

A:It may be blocked by operator or limit, Check the SIM card again orcontact Operator.

1、Overview
SMS dongle is a device used for bulk send and receive of SMS on mobile networks.
Built-in wireless 4g module can insert into 1-8 SIM card.Can be used directly into the computer USB port for laptops and desktops,also be used in conjunction with UART HUB
▼The following picture shows the USB Dongle 4G EC25 module

Note: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.

2、Product Brief

▼4G LTE Dongle supports wireless internet access

▼SMS Caster interface operation demonstration

3、Appearance

​

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：Paired with UART, can be use 1/2/3/4/5/6/7/8/9 slots and more

Speed: 2G: 800-1000 sms, 3G:2500-2800 sms, 4G:2500-3600 sms per port per hour Send and receive SMS,MMS
UART ransmitting speed: 9600/19200/115200

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

5、Function

The main function of the product is High-Speed internet access and Internet of Things apply, SMS or voice notification reminders.

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.


About Change IMEI/Send USSD/Call/Put in PIN/PUK code(AT command)

● Change IMEI

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. put in "at+cgsn"//check IMEI

6.at+egmr=1,7,"IMEI number" change imei

for example: AT+EGMR=1,7,"453243242432134"

if you put in imei is wrong ,it will reset or keep old IMEI

7. put in "at+cgsn"//check new IMEI

● Send USSD

1. open Putty

2. click " Serial"

4. PUT IN "at&f"

5. put in "at+cusd=1,"USSD command""

for example:at+cusd=1,"*097#"

● CALL

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. put in "ate1"

6. put in "atd number;"

for example:atd 0976006161;

7. put in"ATH" hung off call

Put in PIN/PUK code

1. open Putty

2. click " Serial"
3. Input the com port in "Serial line" such as COM 1

4. PUT IN "at&f"

5. PUT in “at+cpin?” //check PIN status

If display “ready”=> it is ok, don’t need put in PIN code

If display ”SIM PIN” =>need put in PIN code

PUT IN ”at+cpin=PIN code”,
for example: at+cpin=1234

If display ”SIM PUK” =>need put in PUK code

PUT IN “at+cpin=”PUK code”,”NEW PIN code” ” ,
for example: at+cpin=”12345678”,”1234”

About UART HUB

If you need to use it in bulks, need to purchase UART HUB with TTL=3.3V. Our store has HUB with 4/8 channels available for purchase.

TTL UART USB2.0 HUB for Raspberry Pi/ Modem/ COM ports, provides more USB capability to your Pi, what's more, it features USB to UART converter for easy serial communication.

It can work with various versions of the Pi, and the size of the board is designed to perfectly fit the Zero / Zero W / Zero WH.

The product adopts 5V input power supply, compatible with USB power supply, and has an output TTL level of 3.3V. It can be directly connected to various GSM 4G LTE MODEMs, DONGLE, and microcontrollers.

USB HUB HAT Features
● USB Ports, compatible with USB2.0/1.1
● Onboard USB to UART, with enable / disable switch, convenient for Raspberry Pi serial debugging and avoiding conflict

6、FAQ

Q1. COM and port number is not corresponding, how do I know this port can not use?

A:Each module has lights:

 ● Light flash every 3 s, means normal registration card, can be used;

 ● Light flash every 1 s, it isn’t normal registration card, Need to check the card is installed correctly or not.

Q2. You have installed SIM cards,but device can’t read SIM card.
A:Please re-install SIM card and reboot it port, Installing sim card, the direction of the note card is correct.

Q3. COM port have error 2
A:Please reboot this port or re-install this port(Each module is removable).

Q4. Just began to normal to send, but send failure after a period of time

A:It may be blocked by operator or limit, Check the SIM card again orcontact Operator.

• SMS Dongle
• UART HUB
• Power Adapter
• 1FF-2FF（gift）