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If you need access to Wi-Fi when you're travelling data only SIM cards can help keep you connected.
With T-Mobile MVNOs you'll receive the same quality coverage, but their low-cost plans can save you up to $600 a year.
Mobile Virtual Network Operators are low-cost carriers, operating on the same US networks, but at half the price. MVNOs have been growing in popularity and are one of the easiest ways to save money on your wireless device bills.
We've compared all data only SIM cards with T-Mobile MVNOs for you to take a look at below.
Best cheap T-Mobile data SIM cards

Cheapest T-Mobile data SIM card

US Mobile: Cheapest T-Mobile data only SIM card for hotspots
T-Mobile wireless network coverage
* 100 Days FREE Trial
Flexible, no contract plans
24/7 customer service
5G coverage available
No international calling
Phone selection
This US Mobile SIM kit includes 4GB data for $15 for 1 month of wireless service. US Mobile internet plans offers wireless coverage on the T-Mobile 5G and 4G LTE network. Read US Mobile review
US Mobile SIM card: $10/mo
US Mobile SIM card: $15/mo
US Mobile SIM card: $20/mo
US Mobile SIM card: $26/mo

Mint Mobile: Cheapest T-Mobile data only SIM card for 4G
T-Mobile wireless network coverage
* Only $60 for 3 Months
Offers the latest phones with 0% finance
Prepay months in bulk for more savings
Reliable network coverage
Works with most GSM phones
No family plans
Minimum 3 months
This Mint Mobile SIM kit includes 10GB data for $20 for 3 months of wireless service. Mint Mobile internet plans offers wireless coverage on the T-Mobile 5G and 4G LTE network. Read Mint Mobile review
Mint Mobile SIM card: $15/mo
Mint Mobile SIM card: $20/mo
Mint Mobile SIM card: $25/mo

US Mobile: Cheapest T-Mobile data only SIM card for BYOD
T-Mobile wireless network coverage
* 100 Days FREE Trial

Ultra Mobile: Cheapest T-Mobile data only SIM card for MiFi
T-Mobile wireless network coverage
* $300 for 12 Months Service
Simple account dashboard
Unlimited international talk and text
Nationwide coverage
Customer service
This Ultra Mobile SIM kit includes 6GB data for $300 for 12 months of wireless service. Ultra Mobile internet plans offers wireless coverage on the T-Mobile 5G and 4G LTE network. Read Ultra Mobile review
Ultra Mobile SIM card: $14/mo
Ultra Mobile SIM card: $25/mo
Ultra Mobile SIM card: $30/mo
Ultra Mobile SIM card: $40/mo
Best prepaid T-Mobile data only SIM cards
Carrier |
Network | Data |
Price |
---|---|---|---|
T-Mobile | 1GB |
$6/mo |
|
T-Mobile | 2GB |
$10/mo |
|
T-Mobile | 5GB |
$15/mo |
|
T-Mobile | 10GB |
$20/mo |
|
T-Mobile | Unltd |
$29/mo |
T-Mobile data SIM card sizes
There are three different SIM card sizes. Each has an adapter in case you want to switch to a phone with an incompatible SIM Card slot.
Standard SIM Card - The original SIM Card size is similar to any card in your wallet. However, if you want to transfer your data to a new phone, you can take out a small portion of the SIM card to insert into another iPhone.
Micro SIM Card - Micro SIM Cards were introduced in 2010. The Micro SIM Card size is small compared to the original SIM card but not quite as small as the Nano SIM card.
Nano SIM Card - Nano SIM Cards are the smallest SIM cards that came out in 2013.
How to remove a T-Mobile data SIM card
To remove the SIM card from your T-Mobile device all you need is the SIM card remover tool provided to you when you bought your device or a small paper clip.
If using the paperclip, unfold it and gently insert the end into the small pinhole in the SIM tray.
Press gently until the SIM tray pops up, you do not need to use much pressure.
Pull the SIM tray out gently, be careful the SIM card does not fall out.
Swap your SIM card over, making sure you have aligned the SIM in the correct position.
Re-insert the SIM tray into the phone.
T-Mobile data SIM card FAQs
Where can I buy a prepaid T-Mobile data SIM card?
T-Mobile MVNOs offer a variety of prepaid plans. You just purchase a SIM card kit, with no need to upgrade your handset.
How much is a T-Mobile data SIM card?
T-Mobile MVNO prepaid plans start from around $10.
How do you activate a T-Mobile data SIM card?
When you receive your SIM card, pop it into your device and follow the activation instructions.
Recap
Do you really need unlimited data? One of the first places you can save money on your data only SIM is by checking your estimated data use.
On average we only use around 3 to 5GB a month, so by opting for a set data limit plan you could get more bang for your buck.
You'll be able to access Wi-Fi where the T-Mobile network is available. So if you're traveling you can check cell phone coverage for any area with the ZIP code.