A US prepaid SIM for tourists can be a better fit than an eSIM when your phone has a physical SIM tray, you want a simple one-time data purchase, and you do not need a US phone number. RelaxedSIM provides a physical 3-in-1 data SIM for use inside the United States only. It connects through AT&T, T-Mobile, and Verizon network coverage and works with unlocked phones, tablets, hotspots, routers, cameras, vending machines, kiosks, and other compatible devices.
This guide explains how the physical SIM works, which plan suits a short visit or a longer stay, what to check before buying, and how to configure the APN if your device does not apply it automatically.
Quick answer: is a physical US SIM best for tourists?
A physical US data SIM is usually the simplest option when the device is unlocked and has a Standard, Micro, or Nano SIM slot. There is no carrier-store activation, monthly contract, or credit check. Insert the pre-activated card in the United States, turn on mobile data, and use the internet.
RelaxedSIM is data-only. It does not provide a US phone number, calls, or SMS. Messaging apps that use an internet connection can still work through a phone number or account you already have.
Physical SIM versus eSIM for a US trip
| Question | RelaxedSIM physical data SIM |
|---|---|
| Is an eSIM provided? | No. RelaxedSIM currently provides a physical card only. |
| Does the phone need a SIM tray? | Yes. The device must accept a Standard, Micro, or Nano physical SIM. |
| Can it provide a US phone number? | No. It is a data-only service. |
| Does it work outside the US? | No. The service is intended for use inside the United States. |
| Is contract activation required? | No. The card is pre-activated and has no monthly contract or credit check. |
Before ordering, check whether an eSIM-only phone or regional model lacks a physical SIM slot. Several recent US iPhone models are eSIM-only, for example. A tourist using one of those devices should not order a physical-only SIM.
What to check before buying
- The phone or device is carrier-unlocked. A carrier lock can prevent another provider’s SIM from registering.
- The device has a physical SIM slot. RelaxedSIM includes Standard, Micro, and Nano cutouts in one 3-in-1 card.
- The device supports US LTE bands. A phone or hotspot built only for another region may not have the radio bands used by US networks.
- Your travel does not leave the United States. RelaxedSIM does not provide service in Canada, Mexico, Europe, or other countries.
- You can use data without calls or SMS. Use email, web messaging, or an existing account for communication.
Which RelaxedSIM plan should a tourist choose?
| Plan | Best for |
|---|---|
| 100MB / 7 days | A short connectivity test or light use such as maps, email, and messaging without video. |
| 3GB / 30 days | Most short US trips: maps, browsing, messaging, rideshare, and occasional photos. |
| 6GB / 90 days | A longer visit or more frequent hotspot and navigation use. |
| 12GB / 180 days | Extended travel, remote work, or a device that stays in the US. |
| 24GB / 360 days | Long-term stays, recurring trips, or an IoT/camera/POS device that needs a year of connectivity. |
For a typical one- to two-week trip with normal maps, messaging, browsing, and some photos, the 3GB/30-day plan is the most direct starting point. Heavy video streaming, long hotspot sessions, and cloud uploads use substantially more data.
Every paid plan begins with a free 100MB/7-day trial after purchase. Use that allowance to confirm the phone or device registers and passes data before the main plan begins.
How to set up RelaxedSIM after arriving in the US
- Power off the phone or device and insert the appropriate cutout from the 3-in-1 SIM.
- Power on and make sure the device is not restricted to another carrier profile.
- Turn on mobile data. Enable data roaming if that option is present.
- Wait for the device to register on an available US network. RelaxedSIM uses AT&T, T-Mobile, and Verizon network coverage.
- Test a simple web page before relying on maps or a payment app.
Network selection can vary by location and device. RelaxedSIM does not guarantee one specific carrier or a fixed speed.
APN settings for tourists
Most devices apply the correct APN automatically. If mobile data does not work after registration, create a new APN profile:
| Setting | Value |
|---|---|
| Name | RelaxedSIM |
| APN | globaldata |
| Username | Leave blank |
| Password | Leave blank |
On Android, the menu is commonly under Settings → Network & internet → Mobile network → Access Point Names. On iPhone, check Settings → Cellular → Cellular Data Network. Menu names can vary by manufacturer and software version.
If your phone shows signal bars but no internet, confirm that the RelaxedSIM APN is selected, data roaming is on, and the device is not connected to a restrictive Wi-Fi network. More device-specific instructions are available on the RelaxedSIM APN settings page.
Common tourist mistakes
- Buying a physical SIM for an eSIM-only phone. Check the exact phone model and region before ordering.
- Assuming data-only service includes a US number. RelaxedSIM does not provide calls or SMS.
- Expecting coverage outside the United States. This SIM is for US service only.
- Using a carrier-locked phone. Ask the home carrier to unlock the device before travel.
- Leaving the APN unselected after adding it manually. Save the profile and tap it in the APN list.
- Choosing too little data for hotspot or video use. Use the device’s data tracker and start with a larger plan when needed.
Can tourists use a phone as a hotspot?
Hotspot capability depends on the phone and its firmware. Unlocked Android phones and iPhones may allow personal hotspot through mobile data, but some carrier profiles restrict it. A dedicated 4G hotspot or travel router is often more predictable when several devices need internet. The device must have a physical SIM slot, support US LTE bands, and accept the APN if manual setup is required.
How much data does a tourist need?
Maps, messaging and ordinary web browsing use relatively little data. Video calls, social video, app downloads, device backups and extended hotspot use can consume several gigabytes quickly. The device’s data tracker is the most reliable guide because compression, screen resolution and app behavior vary.
| Typical trip style | Reasonable starting point |
|---|---|
| Maps, email, messaging and light web use | 3GB for up to 30 days |
| Heavier browsing, photos and some hotspot use | 6GB or 12GB |
| Remote work, video calls or multiple connected devices | 12GB or 24GB |
These are planning estimates, not usage guarantees. If several travelers share one hotspot, monitor consumption together. Disable automatic cloud backups and app updates over the mobile connection when data is limited.
US prepaid SIM for tourists FAQ
Can a tourist buy a US prepaid SIM before arriving?
Yes. RelaxedSIM plans can be ordered online and shipped before the trip. The paid data plan begins through the included trial process after the SIM is inserted and connects in the United States.
Does this SIM work in Canada or Mexico?
No. RelaxedSIM service is for the United States only and does not provide cross-border coverage.
Do I need a US phone number for the APN?
No. RelaxedSIM is data-only, so the APN uses globaldata without a phone number, username, or password.
Will my phone automatically switch to a US network?
An unlocked device should detect the SIM and attempt network registration. If it does not, check that the SIM is inserted correctly, carrier lock is removed, mobile data is enabled, and roaming is turned on.
Which plan is best for a 7-day US trip?
The 3GB/30-day plan is usually the safest starting point for maps, messaging, browsing, and light photo use. The 100MB/7-day plan is better for testing connectivity or very limited use.
Can I use the SIM in an eSIM-only phone?
No. RelaxedSIM currently provides a physical SIM only. The phone must have a compatible physical SIM slot.
To compare the available sizes and data periods, visit the RelaxedSIM USA data SIM collection.