Unitel Top-Up & Balance Check for Your Laos eSIM

The short answer: dial *122# to check your Unitel balance, and dial *123* + voucher code + # to top up. Both work on an eSIM exactly as on a physical Unitel SIM, and you never need to re-register — a pre-activated eSIM from us is already registered under your order. Here are the exact codes and steps.

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Check your balance: dial *122#

This works on any Unitel number, eSIM or physical SIM — no app, no login, no registration needed. Dial it like a phone call and a menu pops up showing your remaining balance and, depending on your plan, your remaining data.

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Top up: buy a voucher, dial *123* + code + #

1. Buy a Unitel top-up voucher — any convenience store, mobile shop or street kiosk in Laos sells them (look for the Unitel logo).
2. Dial *123* followed by the voucher’s code, then #. For example *123*1234567890123#.
3. Confirm — the credit is applied instantly, and you can check it landed with *122#.

This adds credit to your existing eSIM; it doesn’t reset or replace it. Your APN settings (unitel3g) and everything else you set up on arrival stay exactly the same.

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One thing to know: you don’t need to register again

If your eSIM came from Internet in Laos, it’s pre-activated and pre-registered under your order — that’s the whole point of buying it online instead of at a counter. The *1021# registration check and the passport/KYC process in our Unitel registration guide only apply if you’re buying a physical SIM locally from scratch. Topping up an eSIM you already have doesn’t touch any of that.

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Running low with days left on your trip?

Two options:

• Top up locally with the *123# voucher method above — cheapest if you’re already in Laos and just need a bit more.
• Buy another plan from us — see our Laos eSIM plans, from 10GB/10 days to 30GB/30 days. If you’re staying longer than a couple of weeks, our long-stay eSIM guide covers the cheaper option once your initial package runs out.

Still stuck? Contact support and we’ll help you sort it out.