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Home > SMS Dongle > YXCALL 2G GSM Dongle 1-2-3-4 slot Bulk Send and Recive SMS IMEI Change AT Command

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YXCALL 2G GSM Dongle 1-2-3-4 slot Bulk Send and Recive SMS IMEI Change AT Command

Name: YXCALL 2G GSM Dongle 1-2-3-4 slot Bulk Send and Recive SMS IMEI Change AT Command
Brand: YX SHOP
Price: 34.04 USD
Availability: InStock
Rating: 4.8 (6 reviews)

SMS dongle is a device used for bulk send and receive of SMS on mobile networks.Built-in wireless 2g module can insert into 1-2-3-4 SIM card.
Paired with 4-port UART HUB, capable of inserting 4 SIM cards and send and receive SMS at the same time.Can be used directly into the computer USB port for laptops and desktops.
(If you need to see more product pictures, please contact customer service, Online time: GMT+8 9:00AM-18:00PM)

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2G Model:

M26 (2G full frequency)

M35 (2G full frequency)
PORTS:

1 port set (SMS)

2 ports set (SMS)

3 ports set (SMS)

4 ports set (SMS)
Price Tier:

1 Unit Price (Qty 1)

2+ Units Price (Tip: Min Qty 2 | No Shipment Otherwise)
Power Adapter:

EU

CN/AU

CN

US(1)

US(2)

UK

Quantity:

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Description
Product Details
Frequency band
Package

Brand Name	YXCALL
PORTS	1-2-3-4 suit (Dongle,HUB, size card converter)
Network	2G GSM
Frequency	850/900/1800/1900MHZ (Available in all countries where 2G GSM networks are still available) Attention: It is known that "Australia, South Korea, Japan, the United States, and Canada" have shut down 2G and cannot use it
Sim slot	1-2-3-4
Warranty	12 months
Module	M26/M35:2G full frequency (GSM)
Interface Type	USB
SMS Send Speed	Approximately 1500 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

GSM bulk SMS dongle 4 port product package display picture

Why Choose it:
● Expandable 1-4 SIM Slots: Pair with the 4-port UART HUB to scale from 1 to 4 SIMs (6,000 SMS/hour total) for growing business needs.
● Bulk Send/Receive: Plug-and-Play USB Design Directly connect to PC/laptop—set up in seconds!
● IMEI Customization: Avoid carrier blocks and ensure message delivery.
● AT Command Mastery: Automate workflows for OTPs, alerts, or marketing blasts.
● Plug & Play: USB-ready for laptops/desktops—set up in seconds!

Forget Costly Gateways!
→ 4x Efficiency: Send 4x faster with simultaneous SIM slots.
→ Zero Monthly Fees: Only pay for your SIM plans.
→ Global 2G Support: Supports 850/900/1800/1900 MHz frequencies, Reliable in 100+ countries.

High-Efficiency Features for Seamless Operations
● Multi-Protocol Versatility: STK, AT Commands, TCP/IP, SMS/MMS, GPRS, GPS, USSD, and email integration.
● GPRS Class 12 Performance: Optimized data transfer with CS-1 to CS-4 encoding, HTTP/FTP/SMTP protocols, and PPP/PAP security.
● Free SMS Caster Software: Automate campaigns, track deliveries, and manage multi-device setups effortlessly.

Scalable & Cost-Effective Solution
● Modular Design: Start with 1 SIM and expand to 4 using the included HUB and size card converter.
● Global Compatibility: Perfect for SMEs in Africa, Asia, or Europe where 2G networks thrive.
● 12-Month Warranty: Backed by YXCALL’s technical support and detailed manuals.

Note: Not compatible with regions that have phased out 2G (e.g., Australia, USA, Japan).

Perfect For:
● SMS marketing agencies & e-commerce
● Appointment reminders & emergency alerts
● Low-cost OTP/verification systems
● Developers & IoT projects

Boost Speed, Slash Costs, Dominate Outreach!
Compact & Portable | Freeware | Reliability

Need bulk SMS made simple? Turn any PC into a multi-SIM SMS hub!

Need Custom Configurations? Contact customer service (9:00 AM - 6:00 PM GMT+8) for bulk orders or setup guidance!

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

Display pictures prepared for various models
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. 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 dongle is a device used for bulk send and receive of SMS on mobile networks.
Built-in wireless 2g 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 2G M26 module

Note: At present, some countries or regions have closed 2G GSM. Before purchasing, please confirm that still using GSM in your region, otherwise you will not be able to use it. The countries that have confirmed the cessation of GSM include:Australia, South Korea, Japan, United States, Canada (unable to use)Please contact customer service to recommend 3G or 4G products for you （For example，4G module:EC25）

2、Product Brief

▼SMS Caster interface operation demonstration

3、Appearance

● USB interface

● SIM card slot

● Uart to USB Switch

● LED light
● Size:67.5*42*13.7mm

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"

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

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

● Onboard multi indicators, for monitoring the status of power, USB to UART TTL3.3V COM ports, and each USB port

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.

Some countries or regions have already turned off 2G GSM. Before purchasing, please confirm that the region you are using still uses GSM, otherwise you will not be able to use it.

Currently,The countries that have confirmed the cessation of GSM include:Australia, South Korea, Japan, United States, Canada (unable to use)Please contact customer service to recommend 3G or 4G products for you （For example，4G module:EC25）

Product Feature
Name	2G SMS Dongle
Communication interface	USB
Chipset	Quectel M26 / M35
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
Frequency	GSM Full frequency: 850,900,1800,1900Mhz (Applicable to global GSM frequency bands) Attention: It is known that "Australia, South Korea, Japan, the United States, and Canada" have shut down 2G and cannot use it
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