Are there any 2g networks still available in the usa ? at&t and others have shut down 2g systems.

better looking for 3G/4G. hologram.io is going to stop offering 2g cellular network service soon.

Do Hologram sim cards work with this product? I'm having trouble attaching to the network. (The sim was recognized)

Yes, it should work if properly configured

¿Does this product supports ussd codes?

YES... but remember that USSD, SMS etc. are protocols and therefore will require specialized parsing of incoming data as well as the protocol specific structure of outgoing data... I have seen 'some' sample USSD samples in the Arduino world... I am not aware of any LIBARIES... Also I have not actually worked with this protocol myself in the IoT environment. Know that MOST ALL cell phones (chipsets) that are GSM specification will support the USSD protocol.

Is this G3 compatible?

Do you mean 3G compatible. The device is not, the Hologram SIM is

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HiLetgo Smallest SIM800L GPRS GSM Breakout Module Quad-Band 850/900/1800/1900MHz SIM Card Slot Onboard with Antenna 3.7~4.2V

Product ID: 26587866

Details

Brand
HiLetgo
Connectivity Technology
GSM GPRS
Included Components
1*SIM800L GPRS
Model Name
3-01-1090-A
Wireless Communication Standard
900 MHz Radio

📶Quad-band GSM/GPRS 850/900/1800/1900MHz

🔋Ultra-low 1mA sleep mode current

🔗UART TTL serial port with auto baud detection

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Description

🌍 Stay connected everywhere, powered smartly, and build boldly!

COMPACT YET MIGHTY - Smallest SIM800L breakout module that packs powerful GSM features without compromising your project’s footprint.
POWER SMART DESIGN - Maximize uptime with ultra-low 1mA sleep current, perfect for always-on IoT and remote projects.
PLUG PLAY UART INTERFACE - Effortlessly integrate with microcontrollers like Arduino and Raspberry Pi via TTL serial with auto baud detection.
GLOBAL QUAD BAND CONNECTIVITY - Seamlessly connect anywhere with 850/900/1800/1900MHz support for true worldwide GSM/GPRS coverage.
VERSATILE COMMUNICATION MODES - Send/receive SMS, voice calls, GPRS data, and even FM radio broadcasts for multi-functional IoT solutions.

The HiLetgo SIM800L GPRS GSM Breakout Module is a compact, quad-band GSM/GPRS device supporting global 2G networks. It features ultra-low power consumption with just 1mA in sleep mode, UART TTL serial communication with auto baud detection, and supports voice calls, SMS, GPRS data, and FM radio. Ideal for seamless integration with popular microcontrollers, it empowers IoT and remote communication projects with reliable, worldwide connectivity.

Specifications

ASIN	B01DLIJM2E
Best Sellers Rank	#3,808 in Single Board Computers (Computers & Accessories)
Brand	HiLetgo
Built-In Media	1*SIM800L GPRS GSM Breakout Module
Compatible Devices	8051, AVR, ARM, PIC, Arduino, Raspberry Pi
Connectivity Technology	GSM, GPRS
Customer Reviews	4.2 4.2 out of 5 stars (134)
Manufacturer	HiLetgo
Mfr Part Number	3-01-1090-A
Model Name	3-01-1090-A
Model Number	3-01-1090-A
Number of Items	1
Processor Count	1
Wireless Compability	900 MHz Radio Frequency

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$18.69

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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