Plan A Data-Only SIM Card
Lower-cost data-only SIM for locations where AT&T or T-Mobile has reliable signal.
AT&T and T-Mobile
View Plan A
Portable WiFi data plans
Hotspot Data Plans
Choose a prepaid data plan for portable WiFi hotspots, mobile routers, USB dongles, travel internet, backup internet, and work on the go.
Works withPortable WiFi hotspots, 4G LTE hotspots, 5G hotspots, USB dongles, and travel routers
Best price2 GB per month for light use, 10 GB per month for standard use, and 20 GB or more for heavier browsing
Widest coverageUse annual or multi-month plans when the hotspot is used seasonally or as backup internet
Data starting pointMonthly plans include 1 GB, 2 GB, 5 GB, 10 GB, 20 GB, and higher options depending on SIM type
Plan recommendation
Choose the SIM by coverage at the device location.
Both options are data-only SIM cards for connected devices. The right choice depends on which carrier works best where the device will actually be used.
Plan B Triple-Network Data-Only SIM Card
Triple-network data-only SIM for rural, remote, mobile, or uncertain coverage locations.
AT&T, T-Mobile, and Verizon
View Plan B
Pricing and plans last verified: June 2026.
Buyer guidance
What to know before ordering.
Pick a plan by how you use WiFi
Light email, maps, and messaging can start with 2 GB per month. Laptops, video calls, and frequent browsing usually need 10 GB or more. Streaming and backup internet can use much more.
Works with SpectrumSIM hotspot devices
Use these plans with compatible portable hotspots, USB dongles, MiFi devices, and routers. SpectrumSIM hotspot devices are designed for no-contract data service.
Setup path
Get online in four steps.
Confirm the device is unlocked and supports US 4G LTE or compatible 5G bands.
Choose Plan A for AT&T and T-Mobile or Plan B for AT&T, T-Mobile, and Verizon.
Activate online, choose a data plan, and complete payment before final setup.
Use puffin as the APN for most current SpectrumSIM cards and enable data roaming if available.
FAQ
Common questions about hotspot data plans.
Which hotspot data plan should I choose?
Choose 2 GB per month for light use, 10 GB per month for standard laptop or travel use, and 20 GB or more for heavier browsing or backup internet.
Can I change my hotspot data plan later?
Yes. You can manage service and add data through m.spectrumsim.com or the Puffin Smart mobile app.
Do hotspot plans require a contract?
No. SpectrumSIM hotspot data plans are prepaid and do not require a long-term contract.
Do SpectrumSIM data-only SIM cards include voice or text?
No. SpectrumSIM cards are data-only SIM cards for internet-connected devices. They do not include voice calling or SMS text messaging.
What APN should I use?
For most current SpectrumSIM cards, use puffin as the APN. If your SIM starts with 8946080, use data641003. Save the APN profile and enable data roaming when your device has that option.
Which SIM should I choose if I am not sure about coverage?
Choose Plan B if the device will be used in a rural, remote, mobile, or weak-signal location because it adds Verizon coverage. Choose Plan A when AT&T or T-Mobile is reliable at the device location.
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