
Connect Your Smart Devices
VoicePing SIM cards offers a physical SIM card for IoT Devices. It provides low data usage at an affordable cost.

Seamless Network Connectivity
Automatically connects to the AT&T network for reliable nationwide coverage across supported 4G and 5G data networks.
Physical or eSIM options
Most IoT devices still need a physical sim which is what we provide. Optionally also ask for our eSIM package if you plan to use on supported devices.
30-Day Unlimited Data Trial
Test your IoT devices with unlimited 128 Kbps data—no contracts or hidden fees. Upgrade anytime to our 365-day plan.
Purchase via Amazon. Note: Data routes via Hong Kong (~400ms latency); not suitable for TikTok or real-time apps.

High Speed Data
Need faster burst of speeds or more data for non text based IoT use cases?
We offer a 30GB data add-on that you can use throughout the 365 days so you can get those pictures or short videos faster.
Flexible Pricing Plans
No contract. No activation fees. Uses AT&T (U.S. only).
Recommended

1-Year Unlimited
$30.00
Unlimited data at 128 Kbps for 1 year. For IoT devices, GPS trackers, sensors, low-data devices.

1-Year + 30GB Full Speed
$69.00
1 year service with 30GB full-speed data. Unlimited data at 128 Kbps after 30GB. Best for Ideal for dashcams, routers & data-heavy IoT use
Getting Connected with VoicePing in Minutes
Effortless Activation for Reliable, Unlimited IoT Connectivity

Step 1: Need to ON Data Roaming
Activate your IoT SIM by turning on Data Roaming—this enables seamless connection to supported networks like AT&T with no extra charges.

Step 2: If APN not set, need to set CMlink
Most devices auto-configure. If not, go to Settings > Mobile Network > Access Point Names, tap +, and enter: Name: cmlink APN: cmlink

Step 3: Choose Your Network
Choose AT&T network for best connectivity.
Choose the Right Data SIM for Your Device
Effortless connectivity for your smart devices — perfect for personal or business use!

IoT 128kbps
Low-data use for trackers, smartwatches, sensors like GPS devices, children's smartwatches

Full Speed Data 30GB
High-speed data for video devices like CCTV, dashcams, video surveillance

ESIM
Smartphones and tablets with occasional Mobile Data usage
Support & FAQs
Reliable answers. Real support. Anytime you need it.
What devices are supported?
Can I upgrade later?
Can I use VoicePing SIM outside the US?
Can I buy the VoicePing SIM card on Amazon?
Why is my connection slower or delayed on some apps?
Can I use this on a CCTV?
How Do I check my current plan or data usage?
GPS Tracker Shows “No Data” or “Offline”?
Support Help
August 6, 2025Read more...Option 1: Check the Sim Card Itself If you still have the SIM card inserted in your device or stored somewhere Remove the SIM card from your device.Look Closely, Your ICCID is usually printed in very small text directly on the SIMIt typically starts with 89, followed by several digits Option...September 3, 2025Read more...Terms of Service Policies that apply to your account and use of this website. These Terms of Service are a contract between you and SWT International Pte Ltd (referred to in these Terms of Service as “SWT”, “us”, “we” or “our”), the provider of the SWT International website and the services...
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