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Deal of the Month: Ting - Unlimited Data for $25/mo

Best Unlimited Data SIM Card in 2021

Compare the cheapest unlimited data SIM card plans

99% coverage4G & 5G speedBring your phoneNo contracts
Big wireless coverage at small prices: switch & save up to $600 a year
Ting Sim Card - Vertical
UnltdLTE Data
$25*per month
Powered by:
See Deal* $20 Off for 3 Months
Tello Sim Card - Vertical
UnltdLTE Data
$39per month
Powered by:
Mint Mobile Sim Card - Vertical
UnltdLTE Data
$30*per month
Powered by:
See Deal* $90 for 3 months Service
US Mobile Sim Card - Vertical
UnltdLTE Data
$45per month
Powered by:
See DealFree Starter Kit with code: MSPUSM
Ultra Mobile Sim Card - Vertical
UnltdLTE Data
$32*per month
Powered by:
See Deal* Extra 20% Off with code: MSP20
We currently have no deals for that combination, please change the filters
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Disclaimer: MoneySavingPro is a free price comparison service but we do not provide service directly. We do our best to keep all the information up to date but there may be some discrepancies between the price you pay.

Big savings, no compromises
Nationwide CoveragePowered by the major networks
Bring your own phoneKeep your existing phone and number
4G LTE data speedsSame fast speeds as the big guys
No contractsFlexible and commitment-free
Customize your planOnly pay for what you use
Buy onlineNo need to visit a store
Best Unlimited Data SIM Card Hero
Same coverage, massive savings!
Stop the Unlimited Data Plan Rip Off!
CarrierNetworkDataPriceAnnual
VerizonVerizon 4G & 5GUnlimited*$80/mo$960/yr
US MobileVerizon 4G & 5G5GB$15/mo$180/yr
*Avg. data usage only 3-5GBSavings$65/moSavings$780/yr
Coverage CheckerFind great value plans with the best coverage in your area
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Switching & saving is simple
1
Customize your planDon't pay for data you don't use
2
Bring your own phoneKeep your phone & number
3
Order SIM card onlineInsert your new SIM card & activate

The best cheap unlimited SIM cards in October

Looking for unlimited data at an affordable price? You'll find the best value deals with MVNOs.

Mobile Virtual Network Operators are low cost carriers that are powered by the same major networks, but offering half price plans. You'll find all the same features including unlimited data from carriers like Mint Mobile and Tello.

Quickly becoming the most popular way to get unlimited data at a budget friendly price, we've selected the best MVNOs below.

Check Carrier Coverage

Best T-Mobile unlimited SIM card

Mint Mobile unlimited data plan* $90 for 3 months Service

Unlimitedmins

Unlimitedtexts

Unlimited

4G/5G data

$30/mo*

Powered by: T-Mobile

Compare T-Mobile unlimited data plans

PlanDataMonthly PriceAnnual Cost
T-Mobile MagentaUnlimited$70$840
T-Mobile Magenta MaxUnlimited$85$1,020

T-Mobile vs Mint Mobile Plan Comparison

Keep your T-Mobile phone, number & coverage: Save $480 per year

CarrierNetwork Coverage4G LTE DataPriceAnnual Cost
T-MobileT-Mobile 4G LTEUnltd*$70/mo$840/yr
Mint MobileT-Mobile 4G LTEUnltd$30/mo$360/yr
*Don't waste money on unlimited data - Avg. data usage is only 3-5GBSavings$40/mo$480/yr

Compare: Cheap T-Mobile prepaid SIM cards


Best Verizon unlimited data SIM card

Ting unlimited data plan* $20 Off for 3 Months

Unlimitedmins

Unlimitedtexts

Unlimited

4G/5G data

$25/mo*

$45/mo

Powered by: T-Mobile & Verizon

Compare Verizon unlimited plans

PlanDataMonthly PriceAnnual Cost
Verizon Play More UnlimitedUnlimited$80$960
Verizon Do More UnlimitedUnlimited$80$960
Verizon Get More UnlimitedUnlimited$90$1,080

Verizon vs Ting Plan Comparison

Keep your Verizon phone, number & coverage: Save $480 per year

CarrierNetwork Coverage4G LTE DataPriceAnnual Cost
VerizonVerizon 4G LTEUnltd*$80/mo$960/yr
TingVerizon 4G LTEUnltd$45/mo$480/yr
*Don't waste money on unlimited data - Avg. data usage is only 3-5GBSavings$35/mo$480/yr

Compare: Cheap Verizon prepaid SIM cards


Best AT&T unlimited data SIM card

Pure Talk unlimited data plan* 25% Off for 3 Months

Unlimitedmins

Unlimitedtexts

Unlimited

4G/5G data

$41.25/mo*

$55/mo

Powered by: AT&T

Compare AT&T unlimited plans

PlanDataMonthly PriceAnnual Cost
AT&T Unlimited ExtraUnlimited$75$900
AT&T Unlimited EliteUnlimited$85$1,020

AT&T vs Pure Talk Plan Comparison

Keep your AT&T phone, number & coverage: Save $281 per year

CarrierNetwork Coverage4G LTE DataPriceAnnual Cost
AT&TAT&T 4G LTEUnltd*$75/mo$900/yr
Pure TalkAT&T 4G LTEUnltd$55/mo$619/yr
*Don't waste money on unlimited data - Avg. data usage is only 3-5GBSavings$20/mo$281/yr

Compare: Cheap AT&T prepaid SIM cards


Prepaid unlimited SIM card benefits

MVNOs - or Mobile Virtual Network Operator - are the best route to go down for cheap cell phone plans. By hopping onto one of the major networks prepaid SIMs offer the same great service you trust but at half the cost. You get greater flexibility, can keep your phone and number and no long contracts to keep you tied down.

  • Same great nationwide coverage: These cell phone carriers operate on the very same networks as the big four carriers.
  • Much lower prices: Save up to $600 per year on your cell phone plan. Why are MVNOs so much cheaper? They don't have the huge overhead and advertising costs the big guys do.
  • No contracts: Don't get trapped into a two-year agreement. Switch carriers when you decide to with a no contract phone plan.
  • Same cell phone service: Just because you're paying less, that doesn't mean you have to scrimp on features. Plans with unlimited everything are easy to find from these prepaid carriers. Usually, a low cost carrier plan comes with unlimited talk and text as standard, high speed data, and even mobile hotspot data features.
  • Keep your phone and number: You can bring your own phone and keep your phone number. No need to sign up for pricey device payments.
  • Customize your plan: You decide how much data you need. Choose to pay as you go, opt for unlimited or no data, minimal minutes, or unlimited talk text and data. Unlimited data plans come at a much better price with an alternative carrier. Pick the plan options that fit your budget - not the one your carrier thinks you need.
  • Great customer support: Smaller mobile providers are known for their attention to their customers. Stop feeling like an anonymous number getting lost in the crowd! Check out our carrier user reviews before switching.

Cheapest unlimited data SIM plans

Mint Mobile SIM Card - Best cheap prepaid unlimited SIM card - Mint MobileMint Mobile SIM Card - Best cheap prepaid unlimited SIM card - Mint Mobile
Minutes
Unlimited
Texts
Unlimited
Data
Unlimited
Price
$30/mo** $90 for 3 months Service
Features
Benefits

Pros

  • Offers the latest phones with 0% finance

  • Prepay months in bulk for more savings

  • Reliable network coverage

  • Works with most GSM phones

Cons

  • No family plans

  • Minimum 3 months

Benefits

  • Operates on the nationwide T-Mobile network

  • 7-day money-back guarantee

  • Prepaid - no contract, credit check, or activation fee

  • Bring your phone or buy a Mint Mobile device

  • Keep your phone number

  • Using your phone as a mobile hotspot is permitted

  • Free calling to Canada & Mexico, affordable rates to 160+ other locations

  • Flat-rate international roaming available as an add-on feature

  • Customer service by phone on weekdays and weekends, 24/7 by virtual chat

Tello SIM Card - Best cheap unlimited SIM card for families - TelloTello SIM Card - Best cheap unlimited SIM card for families - Tello
Minutes
Unlimited
Texts
Unlimited
Data
Unlimited
Price
$39/mo
Features
Benefits

Pros

  • 24/7 customer support

  • No contracts

  • Budget friendly family plans

Cons

  • No roaming

  • Coverage in rural areas

Benefits

  • Service on the nationwide T-Mobile network

  • Money-back guarantee on phones (no refunds on plans)

  • Prepaid - no contract, credit check, or activation fee

  • Bring your own phone or choose from a modest selection of new or refurbished devices

  • Keep your current phone number

  • Use of your plan data as a mobile hotspot through your phone is allowed

  • Use your minutes to call Canada, China, and Mexico

  • Minutes to other countries available as add-on

  • 24/7 customer service

US Mobile SIM Card - Best cheap 5G unlimited SIM card - US MobileUS Mobile SIM Card - Best cheap 5G unlimited SIM card - US Mobile
Minutes
Unlimited
Texts
Unlimited
Data
Unlimited
Price
$45/moFree Starter Kit with code: MSPUSM
Features
Benefits

Pros

  • Flexible, no contract plans

  • 24/7 customer service

  • 5G coverage available

Cons

  • No international calling

  • Phone selection

Benefits

  • Coverage on either the T-Mobile or Verizon network

  • Risk-free trial: Full refund within 14 days or before 1000 talk, text, or MB's is used

  • Prepaid - no contract, credit check, or activation fee

  • Bring your own GSM or CDMA phone or choose from a small selection of phones for sale

  • Keep your own phone number

  • Mobile hotspot use available as add-on option with unlimited data plans

  • International roaming plans available with eSIMs

  • Add-ons available for talk, text, and data, with rollover

  • 24/7 customer support

Prepaid unlimited SIM card features

  • 4G LTE data speeds: Since MVNOs operate on the big four cellular networks you'll pay less without sacrificing speed. More and more are adding 5G coverage all the time so you can expect high-speed data.
  • Unlimited talk and text messaging: Finding a new unlimited plan has never been easier. Virtually all small carriers include unlimited text and calls in their plan options. Compare cheap talk and text plans with or without data.
  • International calls to Canada and Mexico: International calling is a must for many people. Luckily MVNOs offer some of the best international phone plans, with free calling to certain countries like Canada and Mexico, and discounted rates on others.
  • Multiline discounts: Low-cost carriers also offer some of the cheapest family cell phone plans, with multi-line discounts.
  • Wi-Fi calling: This feature is handy when you're out of your service area, allowing you to make calls over the internet instead of on your cellular connection.
  • Tethering/hotspot data: Many low-cost carriers allow you to use your phone as a hotspot. Pick an MVNO with the best mobile hotspot plans so you can share your mobile hotspot data with other devices.
  • HD video streaming: Just like the big guys, some MVNOs offer HD video streaming and some don't. Read the fine print to find the option you want.

Compare prepaid unlimited data plans

CarrierNetworkMinutesTextsDataPrice
TingT-Mobile & VerizonUnltdUnltdUnltd$25** $20 Off for 3 Months
TelloT-MobileUnltdUnltdUnltd$39
Mint MobileT-MobileUnltdUnltdUnltd$30** $90 for 3 months Service
US MobileVerizon & T-MobileUnltdUnltdUnltd$45Free Starter Kit with code: MSPUSM
Ultra MobileT-MobileUnltdUnltdUnltd$32** Extra 20% Off with code: MSP20

Unlimited data SIM card FAQs

Can I buy a SIM card for data only?

Yes, you'll find a large selection of data only sim cards with MVNOs. These plans are ideal for mobile hotspot devices and tablets so you can get an internet connection when you're away from home.

Which SIM is best for unlimited data?

It comes down to your individual needs and budget, but carriers like Red Pocket Mobile and Tello offer data only plans for as little as $10 a month depending on the amount of data you're looking for.

Are unlimited data plans worth it?

Unlimited never really means unlimited, and once you've reached your data allowance your speeds will be significantly slowed. You can estimate your monthly data usage with our free tool to see if you can save money with a set data plan.


Recap

MVNOs offer a great selection of plans for all cell phone needs and with budget friendly prices.

But do you really need unlimited data? The average amount of data used each month is between 3-5GB, so you could save even more money by opting for a set data plan. Plus unlimited never really means unlimited. If you check the small print you'll have a data allowance that once hit your speeds will be slowed significantly.

You can estimate your monthly data usage with our free tool and check out more low cost carrier plans with set data options.

Rob Webber
Rob Webber

Rob has 15+ years experience in the US and UK running price comparison sites for cell phone plans, smartphone deals, TV, and internet. He loves thinking outside of the box to build tools that empower consumers to make more informed decisions.

Prepaid SIM card comparison