The kind of trip Cambodia actually is
You came for ten days — Phnom Penh, two days at Angkor Wat, a beach week on Koh Rong. You're now in week four. Kampot ate three days. The bus to Battambang ate two. You ended up with a slow boat back to Siem Reap that wasn't on the itinerary. Cambodia's like that. Trips here drift.
Roamzy charges $4.71 per gigabyte in Cambodia, which is $0.0046 per megabyte. Real-time billing on actual usage. No expiry on the balance. No reset. No subscription you forgot to cancel. One per-MB rate across 192 countries — the same on day three as on day forty-five.
How much does Roamzy cost over a long stay?
Take 1 GB/day as the realistic average. Hostels and cafés have Wi-Fi most of the time, so cellular is for the street, the tuk-tuk apps, and the long bus rides between cities:
| Trip length | Roamzy ($4.71/GB) | Local tourist SIM (re-bought) | Roaming on home number |
|---|---|---|---|
| 2 weeks (14 GB) | $65.94 | $15–35 (7-day pack + top-up) | $80–180 ($5–13/day) |
| 1 month (30 GB) | $141.30 | $30–65 (two packs back-to-back) | $200–450 |
| 2 months (60 GB) | $282.62 | $60–120 (three to four packs) | not realistic — nobody does this |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; exact figures depend on your home carrier and the airport store you visit. Roamzy's rate in column 2 is our actual published rate from the pricing page.
A local Cambodian SIM is genuinely cheap if you're staying long. The trade is paperwork: passport scan, registration, and a tariff that resets every 7–30 days. Six weeks is multiple SIMs, multiple shops, and a balance that resets each cycle. Roamzy has one rate; balance carries to the next trip if you're not back this year.
What matters on a long trail?
- Hostel Wi-Fi is uneven outside the bigger cities. Phnom Penh and Siem Reap handle a video call. On the islands or up-country in Mondulkiri, it falls to barely-loading levels in the evening. Cellular goes from backup to primary.
- Google Translate is a tool, not a convenience. Khmer signage without English is normal outside the obvious tourist corridors. Camera mode on a hand-painted menu works only with data.
- Ride-hail is PassApp and Grab. Phnom Penh is well-served; Siem Reap is mixed; smaller towns run on tuk-tuks negotiated at the curb.
- Bus and slow-boat tickets book through Bookaway, 12Go, and the operator chats. The chats live in Telegram and WhatsApp.
- USD circulates alongside KHR. Most prices are quoted in USD; cards work in cities, not in markets. ATMs dispense both currencies.
Monthly data budget shapes up like this: maps ~5 GB, translator ~2 GB, messaging and home calls ~8 GB, ride-hail ~1 GB, bookings and photo upload to Telegram ~10 GB, the rest is OS background traffic. That's the 30 GB month.
Where does Roamzy work in this country?
- Phnom Penh, Siem Reap, Sihanoukville, Battambang — solid LTE in the cores, 5G rolling out in the capital, throughput fine for video calls
- Kampot, Kep, Kratie — 4G in town, weakening on the river-side back roads
- Angkor temple complex — LTE across most of it; the further into the jungle archaeological sites, the spottier
- Koh Rong, Koh Rong Sanloem — 4G in resort zones at the pier; off-pier signal is uneven
- Mondulkiri and Ratanakiri (the Eastern Highlands) — patchy 4G, drops on the long jungle stretches; offline maps mandatory
- Border crossings to Thailand (Poipet) and Laos (Veun Kham) — the eSIM hands over the moment you cross, no setup change
How do I install my Roamzy eSIM?
| Plug type | Voltage | Frequency | iOS | Android |
|---|---|---|---|---|
| Type A, C, G | 230 V | 50 Hz | iPhone XS+ | Pixel 3+, Galaxy S20+ |
- Sign in to Roamzy via Telegram or Google
- Top up with a minimum of 20 USDT — stablecoins, no cards, no banks, no FX surcharges
- The QR code appears in the dashboard once payment confirms
- Settings → Cellular → Add eSIM → scan QR (do this before you fly)
- The counter starts the moment you land at PNH or REP
Supported stablecoins, networks, and common iPhone/Android setup errors are in the FAQ.
What are Roamzy's honest limitations?
Long-trip travelers historically lose money to three things, and Roamzy doesn't close those traps — they don't exist in the product.
- No expiry on the balance. Loaded $50, used $12 on the first trip — the rest waits for the next one. Next year, the year after, still there.
- No auto-renewal. When the balance runs out, the eSIM stops. No background charge to a card you forgot about six months later.
- No throttling. One rate. The first GB and the hundredth cost the same $0.0046/MB.
It's not a marketing gimmick — it's an engineering decision born from indifference to gimmicks. You can't make a tariff cheaper than no fine-print and no expiry — so we don't.
What if the trail continues across borders?
A long Southeast Asia route is the norm. Roamzy uses one rate per country, no manual switching at borders — the eSIM finds the network in the new country and bills at that country's rate:
- Thailand — the Poipet–Aranyaprathet crossing settles in minutes
- Laos — common northern continuation via the Mekong
- If you want context on why home-number roaming hits so hard — how roaming pricing actually works