SIM cards and
phone plans
for travel
HelloRoam's 16 guides compare the three ways to stay online on a trip: your home phone plan, a local SIM card, or a travel eSIM. HelloRoam sells eSIMs for 185+ countries. New to eSIMs? Start with what an eSIM is.
16 guides
Start with the basics
How a travel eSIM works, how to pick a plan, and how it compares with an international SIM card.
Will your phone work abroad?
Check that your phone supports eSIM and is unlocked before you buy.
US carriers, explained
Plans, prices and roaming rules for US carriers, from T-Mobile to prepaid plans.
- T-Mobile1 guideT-Mobile Cell Phone Plans Explained: What You Get at Every Price Point
- Prepaid carriers1 guideBest Prepaid Phone Plans in 2026: No Contract, No Overage Fees
- Any US carrier2 guidesTravel eSIM for US Travelers: the Complete 2026 Guide
| Carrier | Guides | Newest guide | Updated |
|---|---|---|---|
| T-Mobile | 1 guide | T-Mobile Cell Phone Plans Explained: What You Get at Every Price Point | |
| Prepaid carriers | 1 guide | Best Prepaid Phone Plans in 2026: No Contract, No Overage Fees | |
| Any US carrier | 2 guides | Travel eSIM for US Travelers: the Complete 2026 Guide |
Popular questions
- How much is a T-Mobile plan per month? Answered in: T-Mobile Cell Phone Plans Explained: What You Get at Every Price Point
- What are the best prepaid phone plans? Answered in: Best Prepaid Phone Plans in 2026: No Contract, No Overage Fees
- How do I get an eSIM for Japan? Japan eSIM
- Does eSIM setup differ on iPhone and Android? Answered in: Android Vs iPhone for International Travel: the 2026 Verdict
- Problems after you install your eSIM? eSIM Help Guides
Next steps
Pages that help you choose and set up an eSIM.
All SIM card guides
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USA
UK
Japan
Europe
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