Data plans are sold by the gigabyte, but most travelers have no real feel for what a gigabyte actually buys them on a trip. This guide breaks down what 15GB, 20GB, and 50GB of data actually get you day to day, and shows real eSIM pricing at each size so you’re not guessing or overpaying.
One note if you searched “15GB SIM only”: that phrase usually refers to a UK monthly mobile phone contract (EE, O2, Vodafone, Three) for a home number, not a travel eSIM. If that’s what you’re after, this isn’t the right product — you’d want a UK network’s own SIM-only page. If you’re traveling and want to know how much data a 15GB-equivalent allowance gets you, or you want the closest matching eSIM size, read on.
How Much Data Do You Actually Use While Traveling?
| Activity | Approx. data per hour |
|---|---|
| Maps & navigation | 5–10 MB |
| Messaging (WhatsApp, iMessage, text) | 1–5 MB |
| Social media browsing (Instagram, TikTok) | 150–300 MB |
| Music streaming | 50–100 MB |
| Video calls | 150–300 MB |
| Standard-definition video streaming | 300–700 MB |
| HD video streaming | 1.5–3 GB |
| Laptop hotspot use (browsing/email) | 200–500 MB |
Most travelers land somewhere between the messaging/maps end and the social-media end for the bulk of a trip, with occasional video calls or streaming spikes.
What 15GB–20GB Gets You
A 15–20GB allowance comfortably covers 10–14 days of normal travel use: maps, messaging, social media, some music streaming, and daily video calls, without hotspotting a laptop all day. It’s the size most travelers actually need for a one-to-two-week trip, even though many buy larger “unlimited” plans out of caution.
What 50GB Gets You
50GB covers 3–4 weeks of the same normal use, or roughly 1–2 weeks if you’re regularly hotspotting a laptop, joining video calls for work, or streaming HD video daily. It’s the size that best fits longer trips or working travelers rather than short vacations.
50GB eSIM Plans: Real Pricing by Destination
Here’s what a 50GB plan actually costs across some of GetSimfinity’s most popular destinations:
| Destination | Plan | Price |
|---|---|---|
| Turkey | 50 GB / 30 days | $34.50 |
| United Kingdom | 50 GB / 30 days | $54.00 |
| Asia (regional) | 50 GB / 90 days | $69.00 |
| Europe (regional) | 50 GB / 30 days | $70.00 |
| United States | 50 GB / 30 days | $59.00 |
| United Arab Emirates | 50 GB / 30 days | $78.00 |
| Saudi Arabia | 50 GB / 30 days | $81.50 |
The Europe and Asia regional 50GB plans are worth flagging separately — they cover multiple countries on one eSIM, which is usually better value than buying a 50GB plan for each country individually on a multi-stop trip. See the Regional vs Global vs Unlimited eSIM Plans guide for how to decide between them.
Closest Match to a 15GB–20GB Plan
Not every destination sells an exact 15GB tier — most catalogs step from 10GB to 20GB. Here’s what that looks like in practice:
| Destination | Plan | Price |
|---|---|---|
| Belgium | 10 GB / 30 days | $13.00 |
| Belgium | 20 GB / 30 days | $20.00 |
| Dominican Republic | 10 GB / 30 days | $37.00 |
| Dominican Republic | 20 GB / 30 days | $49.00 |
| Guyana | 10 GB / 30 days | $46.00 |
If your trip is closer to a week than two, the 10GB tier is usually enough and cheaper than stepping up to 20GB just to hit a round number.
How to Pick the Right Size for Your Trip
| Trip length | Typical use | Recommended size |
|---|---|---|
| 3–5 days | Light — maps, messaging | 2–3 GB |
| 1 week | Normal — social media, some streaming | 5–10 GB |
| 1–2 weeks | Normal to heavy | 10–20 GB |
| 3–4 weeks | Normal use, or working remotely | 50 GB |
| Any length, heavy hotspot/streaming | Heavy | Unlimited |
When in doubt, buying a smaller plan and topping up if you run low usually costs less than overbuying up front — see how to top up your eSIM for how that works.
Frequently Asked Questions
Is 15GB enough for a week of travel?
Yes, comfortably. 15GB covers well over a week of normal use — maps, messaging, social media, and daily video calls — with room to spare.
Is 50GB enough for a month?
For normal use, yes. If you’re hotspotting a laptop daily or streaming HD video regularly, you may want to check usage partway through the month or choose an unlimited plan instead.
Why don’t more destinations sell an exact 15GB plan?
Most eSIM providers, including GetSimfinity, standardize tiers at 10GB and 20GB rather than every possible size. Pick whichever is closer to your expected usage — 10GB if your trip is closer to a week, 20GB for two weeks or more.
I searched “15GB SIM only” — is that the same as an eSIM?
Not quite. “SIM only” typically refers to a monthly contract for a home phone number from a network like EE, O2, Vodafone, or Three. A travel eSIM is a separate, short-term data plan for a specific destination or trip — it doesn’t replace a SIM-only home contract.
Is a 50GB regional plan better than buying per-country?
If you’re visiting more than one country in the same region (e.g. multiple European countries), a 50GB regional plan is usually cheaper and simpler than buying a separate plan for each stop.
Ready to pick a size? Browse GetSimfinity’s eSIM plans by destination and choose the tier that matches your trip length.