Name: ByteSIM travel eSIM
Brand: ByteSIM
Availability: InStock

ESIMADVICE LISTING Verified 221 live plans · 186 countries

ByteSIM review: our honest take

ByteSIM is a travel eSIM seller best known for its unusually long 180-day refund window on unactivated eSIMs and for USA voice plans that bundle a real +1 phone number with calls and texts on AT&T 5G. On our site it lists 221 live plans across 186 countries, starting at $2.5, delivered as a QR code by email or installed directly through its iOS/Android app.

Match the plan to your trip length and expected data usage before choosing ByteSIM.

Check whether hotspot, 5G, roaming partners, and fair-use limits fit your phone and destination.

Confirm final taxes, activation timing, refund terms, and supported networks on the provider checkout page.

✨ Ask Roami, our AI advisor, about ByteSIM

Popular ByteSIM plans

ByteSIM vs other eSIM providers

How ByteSIM compares with providers we also list — by the numbers.

FEATURE

ByteSIM THIS PAGE

Travelsim Asia

Nomad eSIM

Countries covered

186

120

185

From price

$2.50

$0.99

$2.00

Live plans

221

76

1,297

eSIMAdvice coupon

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👍 What we like

✓Long 180-day refund window on unactivated eSIMs, with no cancellation fees and full refunds for compatibility mistakes if the QR was never scanned

✓USA voice plans include a real +1 phone number with calls and texts on AT&T 5G, not just data

✓iOS/Android app supports direct eSIM install on iOS 17.4+ (no QR scanning) plus usage tracking and support chat

✓Top-ups add data or days to an existing plan without reinstalling the eSIM profile

✓Hotspot and tethering are supported on most plans

✓24/7 customer support via WhatsApp and email

👎 Worth noting

–Truly unlimited plans are only a small slice of its catalog on our site, and daily/fixed-data plans drop to a slow 128kbps once high-speed data runs out

–No pay-as-you-go or no-expiry plans — every plan runs on a fixed validity period

–Top-ups are not available on every plan; if the Top Up button is missing, that plan cannot be recharged

–Unused QR codes expire 180 days after purchase, requiring a support request for a replacement

How ByteSIM works

1Pick a plan

Choose a ByteSIM plan above by destination, data, and validity. Prices already include any eSIMAdvice coupon.

2Install over Wi-Fi

Buy through the provider, then scan the QR code or use their app to add the eSIM to your phone before you travel.

3Connect on arrival

Turn the eSIM line on for data when you land — your main SIM stays active for calls and texts.

Supported devices

ByteSIM works on any eSIM-capable, carrier-unlocked phone. Common examples:

iPhoneiPhone XS / XR and newer — every iPhone 11–16, SE (2020+), incl. US models that are eSIM-only

Samsung GalaxyS20–S25 series, Note 20, Z Fold / Z Flip (all), A54 / A55 and newer A-series

Google PixelPixel 3 and newer — Pixel 6–9 series fully supported (carrier-unlocked)

iPad & tabletsCellular iPads (2019+), Galaxy Tab S9+; data plans work the same way

Other brandsMotorola Razr/Edge, Xiaomi 13+, Oppo Find, Huawei P40+ — most 2019+ flagships

Tip: open Settings and look for "Add eSIM" or "Add cellular plan" to confirm your device supports eSIM. Your phone must also be carrier-unlocked.

Check your exact phone → Full compatible-device list →

About ByteSIM

After checkout, ByteSIM emails your eSIM QR code and setup details within a few minutes; the same eSIM also appears in the ByteSIM app, and on iOS 17.4+ you can install it from the app without scanning anything. Manual installation via the SM-DP+ address from the email is also supported. Install the eSIM on Wi-Fi before you depart: most plans activate automatically the first time the eSIM connects to a supported network at your destination, while some start on a selected date. Note that an unused QR code expires 180 days after purchase, though support can reissue one. Many plans can be topped up with extra data or days from your account without reinstalling the eSIM profile, but not all plans show the Top Up option.

Countries covered186

Live plans221

VerifiedYes

Traveler reviews

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ByteSIM — quick answers

What is the cheapest ByteSIM plan I can compare here?

We track 221 live ByteSIM plans covering 186 countries, and pricing starts at $2.5. The catalog spans daily, fixed-data, and unlimited options, so the best value depends on destination and how much data you need — our country pages sort them by true price per GB.

Does ByteSIM run cheaper unlimited or fixed-data plans?

Both exist, but they behave differently. ByteSIM's truly unlimited plans promise speeds sufficient for 1080p streaming even under the fair-use policy, while daily and fixed-data plans continue at a throttled 128kbps after the high-speed allowance is used. Only a small share of its catalog is truly unlimited, so check the plan type before assuming unrestricted speed.

When does a ByteSIM eSIM actually start, and can the QR code expire?

Most ByteSIM plans activate the first time the eSIM connects to a supported network at your destination, so you can install on home Wi-Fi in advance without burning validity; some plans instead start on a date you select. An unused QR code expires 180 days after purchase, but customer service can issue a new one if that happens.

How does ByteSIM's 180-day refund guarantee work?

If your eSIM has not been activated and you bought it within the last six months, ByteSIM offers a full refund — including if you purchased without checking device compatibility, as long as the QR code was never scanned. An eSIM that never connected to the internet also qualifies for a full refund, one that worked only temporarily may get a partial refund, and no cancellation fees are charged.

Can I get a US phone number or top up my data with ByteSIM?

Yes to both, with caveats. ByteSIM's USA voice plans include a real +1 number with calls and texts on AT&T 5G, while its standard data-only plans handle voice via apps like WhatsApp or FaceTime instead. Top-ups add data or days to an installed eSIM without a new QR code, but only on plans that show the Top Up option.