Product info
Houston eSIM plans
| Unlimited data · 5 days | $17.99 | Buy eSIM |
| Ohayu recommendsUnlimited data · 10 days | $33.99 | Buy eSIM |
| Unlimited data · 15 days | $39.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $8.49$2.83 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $13.49$2.70 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $21.49$2.15 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $27.79$1.85 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $34.49$1.72 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $73.49$1.47 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in United States. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Houston?
Few days – 3 GB
Maps and rideshare across a big city.
A week – 10 GB
A lot of driving and navigation.
Texas triangle – 20 GB
Houston, Austin, Dallas.
Business week – Unlimited
Tethering from downtown or the Energy Corridor.
Coverage and network
Coverage across the sprawl
United States mobile networks
Houston has no zoning and it shows - the built-up area runs for miles in every direction, so you will drive further here than the map suggests. Coverage keeps up across the metro and along the loops, which is what matters. (Speedtest by Ookla, June 2026)
Speedtest Global Index · Mobile · United States · June 2026
Download
197.34 Mbps
Upload
10.35 Mbps
Latency
27 ms
Global rank
#10 of 98
Houston, specifically
- Downtown, Montrose, the Heights: Strong throughout, and across the Texas Medical Center campus, which is large enough to be its own district.
- I-610 and the Grand Parkway: Continuous on the loops and radial freeways. Live traffic routing is worth having - Houston congestion is heavy and the alternatives are rarely obvious.
- Space Center and Clear Lake: Covered at the visitor centre and down toward NASA Parkway.
- Galveston and the coast: The island and the causeway have service. Ferries to Bolivar and the marshland behind the bay are thinner.
Houston and 49 others
The plan runs nationwide, so on to Austin, New Orleans or anywhere else without a second purchase.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in United States. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in Houston
Airport Wi-Fi at IAH and HOU
Bush Intercontinental has open free Wi-Fi with no password. Note that the Terminal C rideshare area runs a separate network.
Side by side
Houston eSIM Comparison
Indicative comparison based on publicly listed USA plans as of August 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in Houston?
Both airports have kiosks, and Walmart, Target or H-E-B across the metro sell prepaid SIMs cheaper. An eSIM skips it.
What ID do I need for a prepaid SIM in Texas?
None. Prepaid registration is a federal question and the US has no such rule. An eSIM requires no verification at all.
Is one plan enough for Houston and the rest of Texas?
Yes - it is a single nationwide plan, so Austin, Dallas and San Antonio are all included. Bear in mind Texas is bigger than France: the drive between Houston and Big Bend is most of a day, and far west Texas has long stretches with no coverage at all. Fine for the triangle, worth downloading maps for anything beyond it.
eSIM not working in Houston?
Check the Ohayu eSIM is your data line and roaming is enabled for it, then toggle Airplane mode once. Chat and support@ohayu.com are open 24/7.
